Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
[CIFS] Fix endian error comparing authusers when cifsacl enabled
[CIFS] Rename three structures to avoid camel case
Fix extended security auth failure
CIFS: Add rwpidforward mount option
CIFS: Migrate to shared superblock model
[CIFS] Migrate from prefixpath logic
CIFS: Fix memory leak in cifs_do_mount
[CIFS] When mandatory encryption on share, fail mount
CIFS: Use pid saved from cifsFileInfo in writepages and set_file_size
cifs: add cifs_async_writev
cifs: clean up wsize negotiation and allow for larger wsize
cifs: convert cifs_writepages to use async writes
CIFS: Fix undefined behavior when mount fails
cifs: don't call mid_q_entry->callback under the Global_MidLock (try #5)
CIFS: Simplify mount code for further shared sb capability
CIFS: Simplify connection structure search calls
cifs: remove unused SMB2 config and mount options
cifs: add ignore_pend flag to cifs_call_async
cifs: make cifs_send_async take a kvec array
cifs: consolidate SendReceive response checks

fs/cifs/Kconfig

···
 	    Allows to fetch CIFS/NTFS ACL from the server.  The DACL blob
 	    is handed over to the application/caller.
 
-config CIFS_SMB2
-	bool "SMB2 network file system support (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && INET && BROKEN
-	select NLS
-	select KEYS
-	select FSCACHE
-	select DNS_RESOLVER
-
-	help
-	  This enables experimental support for the SMB2 (Server Message Block
-	  version 2) protocol. The SMB2 protocol is the successor to the
-	  popular CIFS and SMB network file sharing protocols. SMB2 is the
-	  native file sharing mechanism for recent versions of Windows
-	  operating systems (since Vista).  SMB2 enablement will eventually
-	  allow users better performance, security and features, than would be
-	  possible with cifs. Note that smb2 mount options also are simpler
-	  (compared to cifs) due to protocol improvements.
-
-	  Unless you are a developer or tester, say N.
-
 config CIFS_NFSD_EXPORT
 	  bool "Allow nfsd to export CIFS file system (EXPERIMENTAL)"
 	  depends on CIFS && EXPERIMENTAL

fs/cifs/README

···
 		otherwise - read from the server. All written data are stored
 		in the cache, but if the client doesn't have Exclusive Oplock,
 		it writes the data to the server.
+  rwpidforward  Forward pid of a process who opened a file to any read or write
+		operation on that file. This prevent applications like WINE
+		from failing on read and write if we use mandatory brlock style.
   acl   	Allow setfacl and getfacl to manage posix ACLs if server
 		supports them.  (default)
   noacl 	Do not allow setfacl and getfacl calls on this mount

fs/cifs/cache.c

···
 static uint16_t cifs_super_get_key(const void *cookie_netfs_data, void *buffer,
 				   uint16_t maxbuf)
 {
-	const struct cifsTconInfo *tcon = cookie_netfs_data;
+	const struct cifs_tcon *tcon = cookie_netfs_data;
 	char *sharename;
 	uint16_t len;
 
···
 			   uint16_t maxbuf)
 {
 	struct cifs_fscache_super_auxdata auxdata;
-	const struct cifsTconInfo *tcon = cookie_netfs_data;
+	const struct cifs_tcon *tcon = cookie_netfs_data;
 
 	memset(&auxdata, 0, sizeof(auxdata));
 	auxdata.resource_id = tcon->resource_id;
···
 					      uint16_t datalen)
 {
 	struct cifs_fscache_super_auxdata auxdata;
-	const struct cifsTconInfo *tcon = cookie_netfs_data;
+	const struct cifs_tcon *tcon = cookie_netfs_data;
 
 	if (datalen != sizeof(auxdata))
 		return FSCACHE_CHECKAUX_OBSOLETE;

fs/cifs/cifs_debug.c

···
 	struct list_head *tmp1, *tmp2, *tmp3;
 	struct mid_q_entry *mid_entry;
 	struct TCP_Server_Info *server;
-	struct cifsSesInfo *ses;
-	struct cifsTconInfo *tcon;
+	struct cifs_ses *ses;
+	struct cifs_tcon *tcon;
 	int i, j;
 	__u32 dev_type;
 
···
 				    tcp_ses_list);
 		i++;
 		list_for_each(tmp2, &server->smb_ses_list) {
-			ses = list_entry(tmp2, struct cifsSesInfo,
+			ses = list_entry(tmp2, struct cifs_ses,
 					 smb_ses_list);
 			if ((ses->serverDomain == NULL) ||
 				(ses->serverOS == NULL) ||
···
 			seq_printf(m, "TCP status: %d\n\tLocal Users To "
 				   "Server: %d SecMode: 0x%x Req On Wire: %d",
 				   server->tcpStatus, server->srv_count,
-				   server->secMode,
+				   server->sec_mode,
 				   atomic_read(&server->inFlight));
 
 #ifdef CONFIG_CIFS_STATS2
···
 			seq_puts(m, "\n\tShares:");
 			j = 0;
 			list_for_each(tmp3, &ses->tcon_list) {
-				tcon = list_entry(tmp3, struct cifsTconInfo,
+				tcon = list_entry(tmp3, struct cifs_tcon,
 						  tcon_list);
 				++j;
 				dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
···
 	int rc;
 	struct list_head *tmp1, *tmp2, *tmp3;
 	struct TCP_Server_Info *server;
-	struct cifsSesInfo *ses;
-	struct cifsTconInfo *tcon;
+	struct cifs_ses *ses;
+	struct cifs_tcon *tcon;
 
 	rc = get_user(c, buffer);
 	if (rc)
···
 			server = list_entry(tmp1, struct TCP_Server_Info,
 					    tcp_ses_list);
 			list_for_each(tmp2, &server->smb_ses_list) {
-				ses = list_entry(tmp2, struct cifsSesInfo,
+				ses = list_entry(tmp2, struct cifs_ses,
 						 smb_ses_list);
 				list_for_each(tmp3, &ses->tcon_list) {
 					tcon = list_entry(tmp3,
-							  struct cifsTconInfo,
+							  struct cifs_tcon,
 							  tcon_list);
 					atomic_set(&tcon->num_smbs_sent, 0);
 					atomic_set(&tcon->num_writes, 0);
···
 	int i;
 	struct list_head *tmp1, *tmp2, *tmp3;
 	struct TCP_Server_Info *server;
-	struct cifsSesInfo *ses;
-	struct cifsTconInfo *tcon;
+	struct cifs_ses *ses;
+	struct cifs_tcon *tcon;
 
 	seq_printf(m,
 			"Resources in use\nCIFS Session: %d\n",
···
 		server = list_entry(tmp1, struct TCP_Server_Info,
 				    tcp_ses_list);
 		list_for_each(tmp2, &server->smb_ses_list) {
-			ses = list_entry(tmp2, struct cifsSesInfo,
+			ses = list_entry(tmp2, struct cifs_ses,
 					 smb_ses_list);
 			list_for_each(tmp3, &ses->tcon_list) {
 				tcon = list_entry(tmp3,
-						  struct cifsTconInfo,
+						  struct cifs_tcon,
 						  tcon_list);
 				i++;
 				seq_printf(m, "\n%d) %s", i, tcon->treeName);

fs/cifs/cifs_dfs_ref.c

···
 	struct dfs_info3_param *referrals = NULL;
 	unsigned int num_referrals = 0;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsSesInfo *ses;
+	struct cifs_ses *ses;
 	char *full_path;
 	int xid, i;
 	int rc;

fs/cifs/cifs_fs_sb.h

···
 #define CIFS_MOUNT_MF_SYMLINKS	0x10000 /* Minshall+French Symlinks enabled */
 #define CIFS_MOUNT_MULTIUSER	0x20000 /* multiuser mount */
 #define CIFS_MOUNT_STRICT_IO	0x40000 /* strict cache mode */
+#define CIFS_MOUNT_RWPIDFORWARD	0x80000 /* use pid forwarding for rw */
 
 struct cifs_sb_info {
 	struct rb_root tlink_tree;
···
 	mode_t	mnt_file_mode;
 	mode_t	mnt_dir_mode;
 	unsigned int mnt_cifs_flags;
-	int	prepathlen;
-	char   *prepath; /* relative path under the share to mount to */
 	char   *mountdata; /* options received at mount time or via DFS refs */
 	struct backing_dev_info bdi;
 	struct delayed_work prune_tlinks;

fs/cifs/cifs_spnego.c

···
 
 /* get a key struct with a SPNEGO security blob, suitable for session setup */
 struct key *
-cifs_get_spnego_key(struct cifsSesInfo *sesInfo)
+cifs_get_spnego_key(struct cifs_ses *sesInfo)
 {
 	struct TCP_Server_Info *server = sesInfo->server;
 	struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr;

fs/cifs/cifs_spnego.h

···
 
 #ifdef __KERNEL__
 extern struct key_type cifs_spnego_key_type;
-extern struct key *cifs_get_spnego_key(struct cifsSesInfo *sesInfo);
+extern struct key *cifs_get_spnego_key(struct cifs_ses *sesInfo);
 #endif /* KERNEL */
 
 #endif /* _CIFS_SPNEGO_H */

fs/cifs/cifsacl.c

···
 	1, 1, {0, 0, 0, 0, 0, 1}, {0} };
 /* security id for Authenticated Users system group */
 static const struct cifs_sid sid_authusers = {
-	1, 1, {0, 0, 0, 0, 0, 5}, {11} };
+	1, 1, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(11)} };
 /* group users */
 static const struct cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {} };
 
···
 	if (num_subauth) {
 		for (i = 0; i < num_subauth; ++i) {
 			if (ctsid->sub_auth[i] != cwsid->sub_auth[i]) {
-				if (ctsid->sub_auth[i] > cwsid->sub_auth[i])
+				if (le32_to_cpu(ctsid->sub_auth[i]) >
+					le32_to_cpu(cwsid->sub_auth[i]))
 					return 1;
 				else
 					return -1;
···
 	int oplock = 0;
 	int xid, rc;
 	__u16 fid;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
 
 	if (IS_ERR(tlink))
···
 	int oplock = 0;
 	int xid, rc;
 	__u16 fid;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
 
 	if (IS_ERR(tlink))

fs/cifs/cifsencrypt.c

···
 }
 
 /* first calculate 24 bytes ntlm response and then 16 byte session key */
-int setup_ntlm_response(struct cifsSesInfo *ses)
+int setup_ntlm_response(struct cifs_ses *ses)
 {
 	int rc = 0;
 	unsigned int temp_len = CIFS_SESS_KEY_SIZE + CIFS_AUTH_RESP_SIZE;
···
  * Allocate domain name which gets freed when session struct is deallocated.
  */
 static int
-build_avpair_blob(struct cifsSesInfo *ses, const struct nls_table *nls_cp)
+build_avpair_blob(struct cifs_ses *ses, const struct nls_table *nls_cp)
 {
 	unsigned int dlen;
 	unsigned int wlen;
···
  * about target string i.e. for some, just user name might suffice.
  */
 static int
-find_domain_name(struct cifsSesInfo *ses, const struct nls_table *nls_cp)
+find_domain_name(struct cifs_ses *ses, const struct nls_table *nls_cp)
 {
 	unsigned int attrsize;
 	unsigned int type;
···
 	return 0;
 }
 
-static int calc_ntlmv2_hash(struct cifsSesInfo *ses, char *ntlmv2_hash,
+static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 			    const struct nls_table *nls_cp)
 {
 	int rc = 0;
···
 }
 
 static int
-CalcNTLMv2_response(const struct cifsSesInfo *ses, char *ntlmv2_hash)
+CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash)
 {
 	int rc;
 	unsigned int offset = CIFS_SESS_KEY_SIZE + 8;
···
 
 
 int
-setup_ntlmv2_rsp(struct cifsSesInfo *ses, const struct nls_table *nls_cp)
+setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
 {
 	int rc;
 	int baselen;
···
 }
 
 int
-calc_seckey(struct cifsSesInfo *ses)
+calc_seckey(struct cifs_ses *ses)
 {
 	int rc;
 	struct crypto_blkcipher *tfm_arc4;

fs/cifs/cifsfs.c

···
 }
 
 static int
-cifs_read_super(struct super_block *sb, void *data,
+cifs_read_super(struct super_block *sb, struct smb_vol *volume_info,
 		const char *devname, int silent)
 {
 	struct inode *inode;
 	struct cifs_sb_info *cifs_sb;
 	int rc = 0;
 
-	/* BB should we make this contingent on mount parm? */
-	sb->s_flags |= MS_NODIRATIME | MS_NOATIME;
-	sb->s_fs_info = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL);
 	cifs_sb = CIFS_SB(sb);
-	if (cifs_sb == NULL)
-		return -ENOMEM;
 
 	spin_lock_init(&cifs_sb->tlink_tree_lock);
 	cifs_sb->tlink_tree = RB_ROOT;
 
 	rc = bdi_setup_and_register(&cifs_sb->bdi, "cifs", BDI_CAP_MAP_COPY);
-	if (rc) {
-		kfree(cifs_sb);
+	if (rc)
 		return rc;
-	}
+
 	cifs_sb->bdi.ra_pages = default_backing_dev_info.ra_pages;
 
-	/*
-	 * Copy mount params to sb for use in submounts. Better to do
-	 * the copy here and deal with the error before cleanup gets
-	 * complicated post-mount.
-	 */
-	if (data) {
-		cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL);
-		if (cifs_sb->mountdata == NULL) {
-			bdi_destroy(&cifs_sb->bdi);
-			kfree(sb->s_fs_info);
-			sb->s_fs_info = NULL;
-			return -ENOMEM;
-		}
-	}
-
-	rc = cifs_mount(sb, cifs_sb, devname);
+	rc = cifs_mount(sb, cifs_sb, volume_info, devname);
 
 	if (rc) {
 		if (!silent)
···
 	cifs_umount(sb, cifs_sb);
 
 out_mount_failed:
-	if (cifs_sb) {
-		if (cifs_sb->mountdata) {
-			kfree(cifs_sb->mountdata);
-			cifs_sb->mountdata = NULL;
-		}
-		unload_nls(cifs_sb->local_nls);
-		bdi_destroy(&cifs_sb->bdi);
-		kfree(cifs_sb);
-	}
+	bdi_destroy(&cifs_sb->bdi);
 	return rc;
 }
 
···
 {
 	struct super_block *sb = dentry->d_sb;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
-	struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
 	int rc = -EOPNOTSUPP;
 	int xid;
 
···
 cifs_show_options(struct seq_file *s, struct vfsmount *m)
 {
 	struct cifs_sb_info *cifs_sb = CIFS_SB(m->mnt_sb);
-	struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
 	struct sockaddr *srcaddr;
 	srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr;
 
···
 		seq_printf(s, ",nocase");
 	if (tcon->retry)
 		seq_printf(s, ",hard");
-	if (cifs_sb->prepath)
-		seq_printf(s, ",prepath=%s", cifs_sb->prepath);
+	if (tcon->unix_ext)
+		seq_printf(s, ",unix");
+	else
+		seq_printf(s, ",nounix");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
 		seq_printf(s, ",posixpaths");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)
 		seq_printf(s, ",setuids");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
 		seq_printf(s, ",serverino");
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
+		seq_printf(s, ",rwpidforward");
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL)
+		seq_printf(s, ",forcemand");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
 		seq_printf(s, ",directio");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
···
 static void cifs_umount_begin(struct super_block *sb)
 {
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 
 	if (cifs_sb == NULL)
 		return;
···
 #endif
 };
 
+/*
+ * Get root dentry from superblock according to prefix path mount option.
+ * Return dentry with refcount + 1 on success and NULL otherwise.
+ */
+static struct dentry *
+cifs_get_root(struct smb_vol *vol, struct super_block *sb)
+{
+	int xid, rc;
+	struct inode *inode;
+	struct qstr name;
+	struct dentry *dparent = NULL, *dchild = NULL, *alias;
+	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+	unsigned int i, full_len, len;
+	char *full_path = NULL, *pstart;
+	char sep;
+
+	full_path = cifs_build_path_to_root(vol, cifs_sb,
+					    cifs_sb_master_tcon(cifs_sb));
+	if (full_path == NULL)
+		return NULL;
+
+	cFYI(1, "Get root dentry for %s", full_path);
+
+	xid = GetXid();
+	sep = CIFS_DIR_SEP(cifs_sb);
+	dparent = dget(sb->s_root);
+	full_len = strlen(full_path);
+	full_path[full_len] = sep;
+	pstart = full_path + 1;
+
+	for (i = 1, len = 0; i <= full_len; i++) {
+		if (full_path[i] != sep || !len) {
+			len++;
+			continue;
+		}
+
+		full_path[i] = 0;
+		cFYI(1, "get dentry for %s", pstart);
+
+		name.name = pstart;
+		name.len = len;
+		name.hash = full_name_hash(pstart, len);
+		dchild = d_lookup(dparent, &name);
+		if (dchild == NULL) {
+			cFYI(1, "not exists");
+			dchild = d_alloc(dparent, &name);
+			if (dchild == NULL) {
+				dput(dparent);
+				dparent = NULL;
+				goto out;
+			}
+		}
+
+		cFYI(1, "get inode");
+		if (dchild->d_inode == NULL) {
+			cFYI(1, "not exists");
+			inode = NULL;
+			if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
+				rc = cifs_get_inode_info_unix(&inode, full_path,
+							      sb, xid);
+			else
+				rc = cifs_get_inode_info(&inode, full_path,
+							 NULL, sb, xid, NULL);
+			if (rc) {
+				dput(dchild);
+				dput(dparent);
+				dparent = NULL;
+				goto out;
+			}
+			alias = d_materialise_unique(dchild, inode);
+			if (alias != NULL) {
+				dput(dchild);
+				if (IS_ERR(alias)) {
+					dput(dparent);
+					dparent = NULL;
+					goto out;
+				}
+				dchild = alias;
+			}
+		}
+		cFYI(1, "parent %p, child %p", dparent, dchild);
+
+		dput(dparent);
+		dparent = dchild;
+		len = 0;
+		pstart = full_path + i + 1;
+		full_path[i] = sep;
+	}
+out:
+	_FreeXid(xid);
+	kfree(full_path);
+	return dparent;
+}
+
 static struct dentry *
 cifs_do_mount(struct file_system_type *fs_type,
-	    int flags, const char *dev_name, void *data)
+	      int flags, const char *dev_name, void *data)
 {
 	int rc;
 	struct super_block *sb;
-
-	sb = sget(fs_type, NULL, set_anon_super, NULL);
+	struct cifs_sb_info *cifs_sb;
+	struct smb_vol *volume_info;
+	struct cifs_mnt_data mnt_data;
+	struct dentry *root;
 
 	cFYI(1, "Devname: %s flags: %d ", dev_name, flags);
 
-	if (IS_ERR(sb))
-		return ERR_CAST(sb);
+	rc = cifs_setup_volume_info(&volume_info, (char *)data, dev_name);
+	if (rc)
+		return ERR_PTR(rc);
+
+	cifs_sb = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL);
+	if (cifs_sb == NULL) {
+		root = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+
+	cifs_setup_cifs_sb(volume_info, cifs_sb);
+
+	mnt_data.vol = volume_info;
+	mnt_data.cifs_sb = cifs_sb;
+	mnt_data.flags = flags;
+
+	sb = sget(fs_type, cifs_match_super, set_anon_super, &mnt_data);
+	if (IS_ERR(sb)) {
+		root = ERR_CAST(sb);
+		goto out_cifs_sb;
+	}
+
+	if (sb->s_fs_info) {
+		cFYI(1, "Use existing superblock");
+		goto out_shared;
+	}
+
+	/*
+	 * Copy mount params for use in submounts. Better to do
+	 * the copy here and deal with the error before cleanup gets
+	 * complicated post-mount.
+	 */
+	cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL);
+	if (cifs_sb->mountdata == NULL) {
+		root = ERR_PTR(-ENOMEM);
+		goto out_super;
+	}
 
 	sb->s_flags = flags;
+	/* BB should we make this contingent on mount parm? */
+	sb->s_flags |= MS_NODIRATIME | MS_NOATIME;
+	sb->s_fs_info = cifs_sb;
 
-	rc = cifs_read_super(sb, data, dev_name, flags & MS_SILENT ? 1 : 0);
+	rc = cifs_read_super(sb, volume_info, dev_name,
+			     flags & MS_SILENT ? 1 : 0);
 	if (rc) {
-		deactivate_locked_super(sb);
-		return ERR_PTR(rc);
+		root = ERR_PTR(rc);
+		goto out_super;
 	}
+
 	sb->s_flags |= MS_ACTIVE;
-	return dget(sb->s_root);
+
+	root = cifs_get_root(volume_info, sb);
+	if (root == NULL)
+		goto out_super;
+
+	cFYI(1, "dentry root is: %p", root);
+	goto out;
+
+out_shared:
+	root = cifs_get_root(volume_info, sb);
+	if (root)
+		cFYI(1, "dentry root is: %p", root);
+	goto out;
+
+out_super:
+	kfree(cifs_sb->mountdata);
+	deactivate_locked_super(sb);
+
+out_cifs_sb:
+	unload_nls(cifs_sb->local_nls);
+	kfree(cifs_sb);
+
+out:
+	cifs_cleanup_volume_info(&volume_info);
+	return root;
 }
 
 static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,

fs/cifs/cifsglob.h

···
  *****************************************************************
  */
 
+struct smb_vol {
+	char *username;
+	char *password;
+	char *domainname;
+	char *UNC;
+	char *UNCip;
+	char *iocharset;  /* local code page for mapping to and from Unicode */
+	char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
+	char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
+	uid_t cred_uid;
+	uid_t linux_uid;
+	gid_t linux_gid;
+	mode_t file_mode;
+	mode_t dir_mode;
+	unsigned secFlg;
+	bool retry:1;
+	bool intr:1;
+	bool setuids:1;
+	bool override_uid:1;
+	bool override_gid:1;
+	bool dynperm:1;
+	bool noperm:1;
+	bool no_psx_acl:1; /* set if posix acl support should be disabled */
+	bool cifs_acl:1;
+	bool no_xattr:1;   /* set if xattr (EA) support should be disabled*/
+	bool server_ino:1; /* use inode numbers from server ie UniqueId */
+	bool direct_io:1;
+	bool strict_io:1; /* strict cache behavior */
+	bool remap:1;      /* set to remap seven reserved chars in filenames */
+	bool posix_paths:1; /* unset to not ask for posix pathnames. */
+	bool no_linux_ext:1;
+	bool sfu_emul:1;
+	bool nullauth:1;   /* attempt to authenticate with null user */
+	bool nocase:1;     /* request case insensitive filenames */
+	bool nobrl:1;      /* disable sending byte range locks to srv */
+	bool mand_lock:1;  /* send mandatory not posix byte range lock reqs */
+	bool seal:1;       /* request transport encryption on share */
+	bool nodfs:1;      /* Do not request DFS, even if available */
+	bool local_lease:1; /* check leases only on local system, not remote */
+	bool noblocksnd:1;
+	bool noautotune:1;
+	bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
+	bool fsc:1;	/* enable fscache */
+	bool mfsymlinks:1; /* use Minshall+French Symlinks */
+	bool multiuser:1;
+	bool rwpidforward:1; /* pid forward for read/write operations */
+	unsigned int rsize;
+	unsigned int wsize;
+	bool sockopt_tcp_nodelay:1;
+	unsigned short int port;
+	unsigned long actimeo; /* attribute cache timeout (jiffies) */
+	char *prepath;
+	struct sockaddr_storage srcaddr; /* allow binding to a local IP */
+	struct nls_table *local_nls;
+};
+
+#define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \
+			 CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \
+			 CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \
+			 CIFS_MOUNT_UNX_EMUL | CIFS_MOUNT_NO_BRL | \
+			 CIFS_MOUNT_CIFS_ACL | CIFS_MOUNT_OVERR_UID | \
+			 CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \
+			 CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \
+			 CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \
+			 CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO)
+
+#define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \
+		      MS_NODEV | MS_SYNCHRONOUS)
+
+struct cifs_mnt_data {
+	struct cifs_sb_info *cifs_sb;
+	struct smb_vol *vol;
+	int flags;
+};
+
 struct TCP_Server_Info {
 	struct list_head tcp_ses_list;
 	struct list_head smb_ses_list;
···
 	struct mutex srv_mutex;
 	struct task_struct *tsk;
 	char server_GUID[16];
-	char secMode;
+	char sec_mode;
 	bool session_estab; /* mark when very first sess is established */
 	u16 dialect; /* dialect index that server chose */
 	enum securityEnum secType;
···
 /*
  * Session structure.  One of these for each uid session with a particular host
  */
-struct cifsSesInfo {
+struct cifs_ses {
 	struct list_head smb_ses_list;
 	struct list_head tcon_list;
 	struct mutex session_mutex;
···
  * there is one of these for each connection to a resource on a particular
  * session
  */
-struct cifsTconInfo {
+struct cifs_tcon {
 	struct list_head tcon_list;
 	int tc_count;
 	struct list_head openFileList;
-	struct cifsSesInfo *ses;	/* pointer to session associated with */
+	struct cifs_ses *ses;	/* pointer to session associated with */
 	char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
 	char *nativeFileSystem;
 	char *password;		/* for share-level security */
···
 #define TCON_LINK_IN_TREE	2
 	unsigned long		tl_time;
 	atomic_t		tl_count;
-	struct cifsTconInfo	*tl_tcon;
+	struct cifs_tcon	*tl_tcon;
 };
 
 extern struct tcon_link *cifs_sb_tlink(struct cifs_sb_info *cifs_sb);
 
-static inline struct cifsTconInfo *
+static inline struct cifs_tcon *
 tlink_tcon(struct tcon_link *tlink)
 {
 	return tlink->tl_tcon;
···
 }
 
 /* This function is always expected to succeed */
-extern struct cifsTconInfo *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb);
+extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb);
 
 /*
  * This info hangs off the cifsFileInfo structure, pointed to by llist.
···
 	struct mutex fh_mutex; /* prevents reopen race after dead ses*/
 	struct cifs_search_info srch_inf;
 	struct work_struct oplock_break; /* work for oplock breaks */
+};
+
+struct cifs_io_parms {
+	__u16 netfid;
+	__u32 pid;
+	__u64 offset;
+	unsigned int length;
+	struct cifs_tcon *tcon;
 };
 
 /*
···
 		return '\\';
 }
 
+static inline void
+convert_delimiter(char *path, char delim)
+{
+	int i;
+	char old_delim;
+
+	if (path == NULL)
+		return;
+
+	if (delim == '/')
+		old_delim = '\\';
+	else
+		old_delim = '/';
+
+	for (i = 0; path[i] != '\0'; i++) {
+		if (path[i] == old_delim)
+			path[i] = delim;
+	}
+}
+
 #ifdef CONFIG_CIFS_STATS
 #define cifs_stats_inc atomic_inc
 
-static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon,
+static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon,
 					    unsigned int bytes)
 {
 	if (bytes) {
···
 	}
 }
 
-static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon,
+static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon,
 					 unsigned int bytes)
 {
 	spin_lock(&tcon->stat_lock);
···
  * This is the prototype for the mid callback function. When creating one,
  * take special care to avoid deadlocks. Things to bear in mind:
  *
- * - it will be called by cifsd
- * - the GlobalMid_Lock will be held
- * - the mid will be removed from the pending_mid_q list
+ * - it will be called by cifsd, with no locks held
+ * - the mid will be removed from any lists
  */
 typedef void (mid_callback_t)(struct mid_q_entry *mid);
 
···
 struct oplock_q_entry {
 	struct list_head qhead;
 	struct inode *pinode;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	__u16 netfid;
 };
 
···
 #define   MID_RESPONSE_RECEIVED 4
 #define   MID_RETRY_NEEDED      8 /* session closed while this request out */
 #define   MID_RESPONSE_MALFORMED 0x10
+#define   MID_SHUTDOWN		 0x20
 
 /* Types of response buffer returned from SendReceive2 */
 #define   CIFS_NO_BUFFER        0    /* Response buffer not returned */

fs/cifs/cifsproto.h

···
 extern void exit_cifs_idmap(void);
 extern void cifs_destroy_idmaptrees(void);
 extern char *build_path_from_dentry(struct dentry *);
-extern char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb,
-					struct cifsTconInfo *tcon);
+extern char *cifs_build_path_to_root(struct smb_vol *vol,
+				     struct cifs_sb_info *cifs_sb,
+				     struct cifs_tcon *tcon);
 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
 extern char *cifs_compose_mount_options(const char *sb_mountdata,
 		const char *fullpath, const struct dfs_info3_param *ref,
···
 extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
 					struct TCP_Server_Info *server);
 extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
-extern int cifs_call_async(struct TCP_Server_Info *server,
-			   struct smb_hdr *in_buf, mid_callback_t *callback,
-			   void *cbdata);
-extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
+extern int cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
+			   unsigned int nvec, mid_callback_t *callback,
+			   void *cbdata, bool ignore_pend);
+extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
 			struct smb_hdr * /* input */ ,
 			struct smb_hdr * /* out */ ,
 			int * /* bytes returned */ , const int long_op);
-extern int SendReceiveNoRsp(const unsigned int xid, struct cifsSesInfo *ses,
+extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
 			struct smb_hdr *in_buf, int flags);
-extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *,
+extern int cifs_check_receive(struct mid_q_entry *mid,
+			struct TCP_Server_Info *server, bool log_error);
+extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
 			struct kvec *, int /* nvec to send */,
 			int * /* type of buf returned */ , const int flags);
 extern int SendReceiveBlockingLock(const unsigned int xid,
-			struct cifsTconInfo *ptcon,
+			struct cifs_tcon *ptcon,
 			struct smb_hdr *in_buf ,
 			struct smb_hdr *out_buf,
 			int *bytes_returned);
···
 extern int cifs_set_port(struct sockaddr *addr, const unsigned short int port);
 extern int cifs_fill_sockaddr(struct sockaddr *dst, const char *src, int len,
 				const unsigned short int port);
-extern int map_smb_to_linux_error(struct smb_hdr *smb, int logErr);
+extern int map_smb_to_linux_error(struct smb_hdr *smb, bool logErr);
 extern void header_assemble(struct smb_hdr *, char /* command */ ,
-			    const struct cifsTconInfo *, int /* length of
+			    const struct cifs_tcon *, int /* length of
 			    fixed section (word count) in two byte units */);
 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
-				struct cifsSesInfo *ses,
+				struct cifs_ses *ses,
 				void **request_buf);
-extern int CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses,
+extern int CIFS_SessSetup(unsigned int xid, struct cifs_ses *ses,
 			     const struct nls_table *nls_cp);
 extern __u16 GetNextMid(struct TCP_Server_Info *server);
 extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
···
 extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
 				const char *);
 
+extern void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
+			       struct cifs_sb_info *cifs_sb);
+extern int cifs_match_super(struct super_block *, void *);
+extern void cifs_cleanup_volume_info(struct smb_vol **pvolume_info);
+extern int cifs_setup_volume_info(struct smb_vol **pvolume_info,
+				  char *mount_data, const char *devname);
 extern int cifs_mount(struct super_block *, struct cifs_sb_info *,
-			const char *);
+		      struct smb_vol *, const char *);
 extern int cifs_umount(struct super_block *, struct cifs_sb_info *);
 extern void cifs_dfs_release_automount_timer(void);
 void cifs_proc_init(void);
 void cifs_proc_clean(void);
 
 extern int cifs_negotiate_protocol(unsigned int xid,
-				  struct cifsSesInfo *ses);
-extern int cifs_setup_session(unsigned int xid, struct cifsSesInfo *ses,
+				  struct cifs_ses *ses);
+extern int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,
 			struct nls_table *nls_info);
-extern int CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses);
+extern int CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses);
 
-extern int CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
-			const char *tree, struct cifsTconInfo *tcon,
+extern int CIFSTCon(unsigned int xid, struct cifs_ses *ses,
+			const char *tree, struct cifs_tcon *tcon,
 			const struct nls_table *);
 
-extern int CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSFindFirst(const int xid, struct cifs_tcon *tcon,
 		const char *searchName, const struct nls_table *nls_codepage,
 		__u16 *searchHandle, struct cifs_search_info *psrch_inf,
 		int map, const char dirsep);
 
-extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSFindNext(const int xid, struct cifs_tcon *tcon,
 		__u16 searchHandle, struct cifs_search_info *psrch_inf);
 
-extern int CIFSFindClose(const int, struct cifsTconInfo *tcon,
+extern int CIFSFindClose(const int, struct cifs_tcon *tcon,
 			const __u16 search_handle);
 
-extern int CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon,
 			u16 netfid, FILE_ALL_INFO *pFindData);
-extern int CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon,
 			const unsigned char *searchName,
 			FILE_ALL_INFO *findData,
 			int legacy /* whether to use old info level */,
 			const struct nls_table *nls_codepage, int remap);
-extern int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
+extern int SMBQueryInformation(const int xid, struct cifs_tcon *tcon,
 			const unsigned char *searchName,
 			FILE_ALL_INFO *findData,
 			const struct nls_table *nls_codepage, int remap);
 
-extern int CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon,
 			u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
 extern int CIFSSMBUnixQPathInfo(const int xid,
-			struct cifsTconInfo *tcon,
+			struct cifs_tcon *tcon,
 			const unsigned char *searchName,
 			FILE_UNIX_BASIC_INFO *pFindData,
 			const struct nls_table *nls_codepage, int remap);
 
-extern int CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
+extern int CIFSGetDFSRefer(const int xid, struct cifs_ses *ses,
 			const unsigned char *searchName,
 			struct dfs_info3_param **target_nodes,
 			unsigned int *number_of_nodes_in_array,
 			const struct nls_table *nls_codepage, int remap);
 
-extern int get_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
+extern int get_dfs_path(int xid, struct cifs_ses *pSesInfo,
 			const char *old_path,
 			const struct nls_table *nls_codepage,
 			unsigned int *pnum_referrals,
 			struct dfs_info3_param **preferrals,
 			int remap);
-extern void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon,
+extern void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon,
 				 struct super_block *sb, struct smb_vol *vol);
-extern int CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon,
 			struct kstatfs *FSData);
-extern int SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon,
+extern int SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon,
 			struct kstatfs *FSData);
-extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon,
 			__u64 cap);
 
 extern int CIFSSMBQFSAttributeInfo(const int xid,
-			struct cifsTconInfo *tcon);
-extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon);
-extern int CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon);
-extern int CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
+			struct cifs_tcon *tcon);
+extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon);
+extern int CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon);
+extern int CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon,
 			struct kstatfs *FSData);
 
-extern int CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon,
 			const char *fileName, const FILE_BASIC_INFO *data,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
-extern int CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon,
 			const FILE_BASIC_INFO *data, __u16 fid,
 			__u32 pid_of_opener);
-extern int CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon,
 			bool delete_file, __u16 fid, __u32 pid_of_opener);
 #if 0
-extern int CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon,
 			char *fileName, __u16 dos_attributes,
 			const struct nls_table *nls_codepage);
 #endif /* possibly unneeded function */
-extern int CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon,
 			const char *fileName, __u64 size,
 			bool setAllocationSizeFlag,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
-extern int CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon,
 			 __u64 size, __u16 fileHandle, __u32 opener_pid,
 			bool AllocSizeFlag);
 
···
 	dev_t	device;
 };
 
-extern int CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon,
 				  const struct cifs_unix_set_info_args *args,
 				  u16 fid, u32 pid_of_opener);
 
-extern int CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *pTcon,
+extern int CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *pTcon,
 			char *fileName,
 			const struct cifs_unix_set_info_args *args,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
 
-extern int CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon,
 			const char *newName,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
-extern int CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon,
 			const char *name, const struct nls_table *nls_codepage,
 			int remap_special_chars);
-extern int CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon,
 			const char *name, __u16 type,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
-extern int CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon,
 			const char *name,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
-extern int CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBRename(const int xid, struct cifs_tcon *tcon,
 			const char *fromName, const char *toName,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
-extern int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon,
+extern int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon,
 			int netfid, const char *target_name,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
 extern int CIFSCreateHardLink(const int xid,
-			struct cifsTconInfo *tcon,
+			struct cifs_tcon *tcon,
 			const char *fromName, const char *toName,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
 extern int CIFSUnixCreateHardLink(const int xid,
-			struct cifsTconInfo *tcon,
+			struct cifs_tcon *tcon,
 			const char *fromName, const char *toName,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
 extern int CIFSUnixCreateSymLink(const int xid,
-			struct cifsTconInfo *tcon,
+			struct cifs_tcon *tcon,
 			const char *fromName, const char *toName,
 			const struct nls_table *nls_codepage);
 extern int CIFSSMBUnixQuerySymLink(const int xid,
-			struct cifsTconInfo *tcon,
+			struct cifs_tcon *tcon,
 			const unsigned char *searchName, char **syminfo,
 			const struct nls_table *nls_codepage);
 #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
 extern int CIFSSMBQueryReparseLinkInfo(const int xid,
-			struct cifsTconInfo *tcon,
+			struct cifs_tcon *tcon,
 			const unsigned char *searchName,
 			char *symlinkinfo, const int buflen, __u16 fid,
 			const struct nls_table *nls_codepage);
 #endif /* temporarily unused until cifs_symlink fixed */
-extern int CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBOpen(const int xid, struct cifs_tcon *tcon,
 			const char *fileName, const int disposition,
 			const int access_flags, const int omode,
 			__u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 			const struct nls_table *nls_codepage, int remap);
-extern int SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
+extern int SMBLegacyOpen(const int xid, struct cifs_tcon *tcon,
 			const char *fileName, const int disposition,
 			const int access_flags, const int omode,
 			__u16 *netfid, int *pOplock, FILE_ALL_INFO *,
 			const struct nls_table *nls_codepage, int remap);
-extern int CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon,
 			u32 posix_flags, __u64 mode, __u16 *netfid,
 			FILE_UNIX_BASIC_INFO *pRetData,
 			__u32 *pOplock, const char *name,
 			const struct nls_table *nls_codepage, int remap);
-extern int CIFSSMBClose(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBClose(const int xid, struct cifs_tcon *tcon,
 			const int smb_file_id);
 
-extern int CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBFlush(const int xid, struct cifs_tcon *tcon,
 			const int smb_file_id);
 
-extern int CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
-			const int netfid, unsigned int count,
-			const __u64 lseek, unsigned int *nbytes, char **buf,
+extern int CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms,
+			unsigned int *nbytes, char **buf,
 			int *return_buf_type);
-extern int CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
-			const int netfid, const unsigned int count,
-			const __u64 lseek, unsigned int *nbytes,
-			const char *buf, const char __user *ubuf,
+extern int CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms,
+			unsigned int *nbytes, const char *buf,
+			const char __user *ubuf, const int long_op);
+extern int CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms,
+			unsigned int *nbytes, struct kvec *iov, const int nvec,
 			const int long_op);
-extern int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
-			const int netfid, const unsigned int count,
-			const __u64 offset, unsigned int *nbytes,
-			struct kvec *iov, const int nvec, const int long_op);
-extern int CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon,
 			const unsigned char *searchName, __u64 *inode_number,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
 
-extern int CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBLock(const int xid, struct cifs_tcon *tcon,
 			const __u16 netfid, const __u64 len,
 			const __u64 offset, const __u32 numUnlock,
 			const __u32 numLock, const __u8 lockType,
 			const bool waitFlag, const __u8 oplock_level);
-extern int CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon,
 			const __u16 smb_file_id, const int get_flag,
 			const __u64 len, struct file_lock *,
 			const __u16 lock_type, const bool waitFlag);
-extern int CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon);
+extern int CIFSSMBTDis(const int xid, struct cifs_tcon *tcon);
 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
-extern int CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses);
+extern int CIFSSMBLogoff(const int xid, struct cifs_ses *ses);
 
-extern struct cifsSesInfo *sesInfoAlloc(void);
-extern void sesInfoFree(struct cifsSesInfo *);
-extern struct cifsTconInfo *tconInfoAlloc(void);
-extern void tconInfoFree(struct cifsTconInfo *);
+extern struct cifs_ses *sesInfoAlloc(void);
+extern void sesInfoFree(struct cifs_ses *);
+extern struct cifs_tcon *tconInfoAlloc(void);
+extern void tconInfoFree(struct cifs_tcon *);
 
 extern int cifs_sign_smb(struct smb_hdr *, struct TCP_Server_Info *, __u32 *);
 extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *,
···
 				 struct TCP_Server_Info *server,
 				__u32 expected_sequence_number);
 extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *);
-extern int setup_ntlm_response(struct cifsSesInfo *);
-extern int setup_ntlmv2_rsp(struct cifsSesInfo *, const struct nls_table *);
+extern int setup_ntlm_response(struct cifs_ses *);
+extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *);
 extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *);
 extern void cifs_crypto_shash_release(struct TCP_Server_Info *);
-extern int calc_seckey(struct cifsSesInfo *);
+extern int calc_seckey(struct cifs_ses *);
 
 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 extern int calc_lanman_hash(const char *password, const char *cryptkey,
 				bool encrypt, char *lnm_session_key);
 #endif /* CIFS_WEAK_PW_HASH */
 #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
-extern int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon,
 			const int notify_subdirs, const __u16 netfid,
 			__u32 filter, struct file *file, int multishot,
 			const struct nls_table *nls_codepage);
 #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
 extern int CIFSSMBCopy(int xid,
-			struct cifsTconInfo *source_tcon,
+			struct cifs_tcon *source_tcon,
 			const char *fromName,
 			const __u16 target_tid,
 			const char *toName, const int flags,
 			const struct nls_table *nls_codepage,
 			int remap_special_chars);
-extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
+extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon,
 			const unsigned char *searchName,
 			const unsigned char *ea_name, char *EAData,
 			size_t bufsize, const struct nls_table *nls_codepage,
 			int remap_special_chars);
-extern int CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon,
 		const char *fileName, const char *ea_name,
 		const void *ea_value, const __u16 ea_value_len,
 		const struct nls_table *nls_codepage, int remap_special_chars);
-extern int CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon,
 			__u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen);
-extern int CIFSSMBSetCIFSACL(const int, struct cifsTconInfo *, __u16,
+extern int CIFSSMBSetCIFSACL(const int, struct cifs_tcon *, __u16,
 			struct cifs_ntsd *, __u32);
-extern int CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon,
 		const unsigned char *searchName,
 		char *acl_inf, const int buflen, const int acl_type,
 		const struct nls_table *nls_codepage, int remap_special_chars);
-extern int CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon,
 		const unsigned char *fileName,
 		const char *local_acl, const int buflen, const int acl_type,
 		const struct nls_table *nls_codepage, int remap_special_chars);
-extern int CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
+extern int CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon,
 			const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
 extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
 extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr);
···
 extern int E_md4hash(const unsigned char *passwd, unsigned char *p16);
 extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
 			unsigned char *p24);
+
+/* asynchronous write support */
+struct cifs_writedata {
+	struct kref			refcount;
+	enum writeback_sync_modes	sync_mode;
+	struct work_struct		work;
+	struct cifsFileInfo		*cfile;
+	__u64				offset;
+	unsigned int			bytes;
+	int				result;
+	unsigned int			nr_pages;
+	struct page			*pages[1];
+};
+
+int cifs_async_writev(struct cifs_writedata *wdata);
+struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages);
+void cifs_writedata_release(struct kref *refcount);
+
 #endif			/* _CIFSPROTO_H */

fs/cifs/cifssmb.c

···
 #include <linux/vfs.h>
 #include <linux/slab.h>
 #include <linux/posix_acl_xattr.h>
+#include <linux/pagemap.h>
 #include <asm/uaccess.h>
 #include "cifspdu.h"
 #include "cifsglob.h"
···
 
 /* Mark as invalid, all open files on tree connections since they
    were closed when session to server was lost */
-static void mark_open_files_invalid(struct cifsTconInfo *pTcon)
+static void mark_open_files_invalid(struct cifs_tcon *pTcon)
 {
 	struct cifsFileInfo *open_file = NULL;
 	struct list_head *tmp;
···
 
 /* reconnect the socket, tcon, and smb session if needed */
 static int
-cifs_reconnect_tcon(struct cifsTconInfo *tcon, int smb_command)
+cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command)
 {
 	int rc = 0;
-	struct cifsSesInfo *ses;
+	struct cifs_ses *ses;
 	struct TCP_Server_Info *server;
 	struct nls_table *nls_codepage;
 
···
    SMB information in the SMB header.  If the return code is zero, this
    function must have filled in request_buf pointer */
 static int
-small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
+small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
 		void **request_buf)
 {
 	int rc;
···
 
 int
 small_smb_init_no_tc(const int smb_command, const int wct,
-		     struct cifsSesInfo *ses, void **request_buf)
+		     struct cifs_ses *ses, void **request_buf)
 {
 	int rc;
 	struct smb_hdr *buffer;
···
 
 /* If the return code is zero, this function must fill in request_buf pointer */
 static int
-__smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
+__smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
 			void **request_buf, void **response_buf)
 {
 	*request_buf = cifs_buf_get();
···
 
 /* If the return code is zero, this function must fill in request_buf pointer */
 static int
-smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
+smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
 	 void **request_buf, void **response_buf)
 {
 	int rc;
···
 }
 
 static int
-smb_init_no_reconnect(int smb_command, int wct, struct cifsTconInfo *tcon,
+smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon,
 			void **request_buf, void **response_buf)
 {
 	if (tcon->ses->need_reconnect || tcon->need_reconnect)
···
 }
 
 int
-CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
+CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses)
 {
 	NEGOTIATE_REQ *pSMB;
 	NEGOTIATE_RSP *pSMBr;
···
 			rc = -EOPNOTSUPP;
 			goto neg_err_exit;
 		}
-		server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode);
+		server->sec_mode = (__u8)le16_to_cpu(rsp->SecurityMode);
 		server->maxReq = le16_to_cpu(rsp->MaxMpxCount);
 		server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize),
 				(__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
···
 				cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) {
 			memcpy(ses->server->cryptkey, rsp->EncryptionKey,
 				CIFS_CRYPTO_KEY_SIZE);
-		} else if (server->secMode & SECMODE_PW_ENCRYPT) {
+		} else if (server->sec_mode & SECMODE_PW_ENCRYPT) {
 			rc = -EIO; /* need cryptkey unless plain text */
 			goto neg_err_exit;
 		}
···
 		goto neg_err_exit;
 	}
 	/* else wct == 17 NTLM */
-	server->secMode = pSMBr->SecurityMode;
-	if ((server->secMode & SECMODE_USER) == 0)
+	server->sec_mode = pSMBr->SecurityMode;
+	if ((server->sec_mode & SECMODE_USER) == 0)
 		cFYI(1, "share mode security");
 
-	if ((server->secMode & SECMODE_PW_ENCRYPT) == 0)
+	if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0)
 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 		if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0)
 #endif /* CIFS_WEAK_PW_HASH */
···
 	if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
 		memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey,
 		       CIFS_CRYPTO_KEY_SIZE);
-	} else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC)
-			&& (pSMBr->EncryptionKeyLength == 0)) {
+	} else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC ||
+			server->capabilities & CAP_EXTENDED_SECURITY) &&
+				(pSMBr->EncryptionKeyLength == 0)) {
 		/* decode security blob */
-	} else if (server->secMode & SECMODE_PW_ENCRYPT) {
-		rc = -EIO; /* no crypt key only if plain text pwd */
-		goto neg_err_exit;
-	}
-
-	/* BB might be helpful to save off the domain of server here */
-
-	if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) &&
-		(server->capabilities & CAP_EXTENDED_SECURITY)) {
 		count = get_bcc(&pSMBr->hdr);
 		if (count < 16) {
 			rc = -EIO;
···
 			} else
 					rc = -EOPNOTSUPP;
 		}
+	} else if (server->sec_mode & SECMODE_PW_ENCRYPT) {
+		rc = -EIO; /* no crypt key only if plain text pwd */
+		goto neg_err_exit;
 	} else
 		server->capabilities &= ~CAP_EXTENDED_SECURITY;
 
···
 		/* MUST_SIGN already includes the MAY_SIGN FLAG
 		   so if this is zero it means that signing is disabled */
 		cFYI(1, "Signing disabled");
-		if (server->secMode & SECMODE_SIGN_REQUIRED) {
+		if (server->sec_mode & SECMODE_SIGN_REQUIRED) {
 			cERROR(1, "Server requires "
 				   "packet signing to be enabled in "
 				   "/proc/fs/cifs/SecurityFlags.");
 			rc = -EOPNOTSUPP;
 		}
-		server->secMode &=
+		server->sec_mode &=
 			~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
 	} else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) {
 		/* signing required */
 		cFYI(1, "Must sign - secFlags 0x%x", secFlags);
-		if ((server->secMode &
+		if ((server->sec_mode &
 			(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) {
 			cERROR(1, "signing required but server lacks support");
 			rc = -EOPNOTSUPP;
 		} else
-			server->secMode |= SECMODE_SIGN_REQUIRED;
+			server->sec_mode |= SECMODE_SIGN_REQUIRED;
 	} else {
 		/* signing optional ie CIFSSEC_MAY_SIGN */
-		if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0)
-			server->secMode &=
+		if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0)
+			server->sec_mode &=
 				~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
 	}
 
···
 }
 
 int
-CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
+CIFSSMBTDis(const int xid, struct cifs_tcon *tcon)
 {
 	struct smb_hdr *smb_buffer;
 	int rc = 0;
···
 {
 	ECHO_REQ *smb;
 	int rc = 0;
+	struct kvec iov;
 
 	cFYI(1, "In echo request");
 
···
 	put_bcc(1, &smb->hdr);
 	smb->Data[0] = 'a';
 	inc_rfc1001_len(smb, 3);
+	iov.iov_base = smb;
+	iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
 
-	rc = cifs_call_async(server, (struct smb_hdr *)smb,
-				cifs_echo_callback, server);
+	rc = cifs_call_async(server, &iov, 1, cifs_echo_callback, server, true);
 	if (rc)
 		cFYI(1, "Echo request failed: %d", rc);
 
···
 }
 
 int
-CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
+CIFSSMBLogoff(const int xid, struct cifs_ses *ses)
 {
 	LOGOFF_ANDX_REQ *pSMB;
 	int rc = 0;
···
 
 	pSMB->hdr.Mid = GetNextMid(ses->server);
 
-	if (ses->server->secMode &
+	if (ses->server->sec_mode &
 		   (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
 			pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
 
···
 }
 
 int
-CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName,
+CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName,
 		 __u16 type, const struct nls_table *nls_codepage, int remap)
 {
 	TRANSACTION2_SPI_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName,
+CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName,
 	       const struct nls_table *nls_codepage, int remap)
 {
 	DELETE_FILE_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName,
+CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon, const char *dirName,
 	     const struct nls_table *nls_codepage, int remap)
 {
 	DELETE_DIRECTORY_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon,
 	     const char *name, const struct nls_table *nls_codepage, int remap)
 {
 	int rc = 0;
···
 }
 
 int
-CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags,
+CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon, __u32 posix_flags,
 		__u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData,
 		__u32 *pOplock, const char *name,
 		const struct nls_table *nls_codepage, int remap)
···
 }
 
 int
-SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
+SMBLegacyOpen(const int xid, struct cifs_tcon *tcon,
 	    const char *fileName, const int openDisposition,
 	    const int access_flags, const int create_options, __u16 *netfid,
 	    int *pOplock, FILE_ALL_INFO *pfile_info,
···
 }
 
 int
-CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBOpen(const int xid, struct cifs_tcon *tcon,
 	    const char *fileName, const int openDisposition,
 	    const int access_flags, const int create_options, __u16 *netfid,
 	    int *pOplock, FILE_ALL_INFO *pfile_info,
···
 }
 
 int
-CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid,
-	    const unsigned int count, const __u64 lseek, unsigned int *nbytes,
+CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes,
 	    char **buf, int *pbuf_type)
 {
 	int rc = -EACCES;
···
 	int wct;
 	int resp_buf_type = 0;
 	struct kvec iov[1];
+	__u32 pid = io_parms->pid;
+	__u16 netfid = io_parms->netfid;
+	__u64 offset = io_parms->offset;
+	struct cifs_tcon *tcon = io_parms->tcon;
+	unsigned int count = io_parms->length;
 
 	cFYI(1, "Reading %d bytes on fid %d", count, netfid);
 	if (tcon->ses->capabilities & CAP_LARGE_FILES)
 		wct = 12;
 	else {
 		wct = 10; /* old style read */
-		if ((lseek >> 32) > 0)  {
+		if ((offset >> 32) > 0)  {
 			/* can not handle this big offset for old */
 			return -EIO;
 		}
···
 	if (rc)
 		return rc;
 
+	pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
+	pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
+
 	/* tcon and ses pointer are checked in smb_init */
 	if (tcon->ses->server == NULL)
 		return -ECONNABORTED;
 
 	pSMB->AndXCommand = 0xFF;       /* none */
 	pSMB->Fid = netfid;
-	pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF);
+	pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
 	if (wct == 12)
-		pSMB->OffsetHigh = cpu_to_le32(lseek >> 32);
+		pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
 
 	pSMB->Remaining = 0;
 	pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
···
 
 
 int
-CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
-	     const int netfid, const unsigned int count,
-	     const __u64 offset, unsigned int *nbytes, const char *buf,
+CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms,
+	     unsigned int *nbytes, const char *buf,
 	     const char __user *ubuf, const int long_op)
 {
 	int rc = -EACCES;
···
 	int bytes_returned, wct;
 	__u32 bytes_sent;
 	__u16 byte_count;
+	__u32 pid = io_parms->pid;
+	__u16 netfid = io_parms->netfid;
+	__u64 offset = io_parms->offset;
+	struct cifs_tcon *tcon = io_parms->tcon;
+	unsigned int count = io_parms->length;
 
 	*nbytes = 0;
 
···
 		      (void **) &pSMBr);
 	if (rc)
 		return rc;
+
+	pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
+	pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
+
 	/* tcon and ses pointer are checked in smb_init */
 	if (tcon->ses->server == NULL)
 		return -ECONNABORTED;
···
 	return rc;
 }
 
+void
+cifs_writedata_release(struct kref *refcount)
+{
+	struct cifs_writedata *wdata = container_of(refcount,
+					struct cifs_writedata, refcount);
+
+	if (wdata->cfile)
+		cifsFileInfo_put(wdata->cfile);
+
+	kfree(wdata);
+}
+
+/*
+ * Write failed with a retryable error. Resend the write request. It's also
+ * possible that the page was redirtied so re-clean the page.
+ */
+static void
+cifs_writev_requeue(struct cifs_writedata *wdata)
+{
+	int i, rc;
+	struct inode *inode = wdata->cfile->dentry->d_inode;
+
+	for (i = 0; i < wdata->nr_pages; i++) {
+		lock_page(wdata->pages[i]);
+		clear_page_dirty_for_io(wdata->pages[i]);
+	}
+
+	do {
+		rc = cifs_async_writev(wdata);
+	} while (rc == -EAGAIN);
+
+	for (i = 0; i < wdata->nr_pages; i++) {
+		if (rc != 0)
+			SetPageError(wdata->pages[i]);
+		unlock_page(wdata->pages[i]);
+	}
+
+	mapping_set_error(inode->i_mapping, rc);
+	kref_put(&wdata->refcount, cifs_writedata_release);
+}
+
+static void
+cifs_writev_complete(struct work_struct *work)
+{
+	struct cifs_writedata *wdata = container_of(work,
+						struct cifs_writedata, work);
+	struct inode *inode = wdata->cfile->dentry->d_inode;
+	int i = 0;
+
+	if (wdata->result == 0) {
+		cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes);
+		cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink),
+					 wdata->bytes);
+	} else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN)
+		return cifs_writev_requeue(wdata);
+
+	for (i = 0; i < wdata->nr_pages; i++) {
+		struct page *page = wdata->pages[i];
+		if (wdata->result == -EAGAIN)
+			__set_page_dirty_nobuffers(page);
+		else if (wdata->result < 0)
+			SetPageError(page);
+		end_page_writeback(page);
+		page_cache_release(page);
+	}
+	if (wdata->result != -EAGAIN)
+		mapping_set_error(inode->i_mapping, wdata->result);
+	kref_put(&wdata->refcount, cifs_writedata_release);
+}
+
+struct cifs_writedata *
+cifs_writedata_alloc(unsigned int nr_pages)
+{
+	struct cifs_writedata *wdata;
+
+	/* this would overflow */
+	if (nr_pages == 0) {
+		cERROR(1, "%s: called with nr_pages == 0!", __func__);
+		return NULL;
+	}
+
+	/* writedata + number of page pointers */
+	wdata = kzalloc(sizeof(*wdata) +
+			sizeof(struct page *) * (nr_pages - 1), GFP_NOFS);
+	if (wdata != NULL) {
+		INIT_WORK(&wdata->work, cifs_writev_complete);
+		kref_init(&wdata->refcount);
+	}
+	return wdata;
+}
+
+/*
+ * Check the midState and signature on received buffer (if any), and queue the
+ * workqueue completion task.
+ */
+static void
+cifs_writev_callback(struct mid_q_entry *mid)
+{
+	struct cifs_writedata *wdata = mid->callback_data;
+	struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
+	unsigned int written;
+	WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf;
+
+	switch (mid->midState) {
+	case MID_RESPONSE_RECEIVED:
+		wdata->result = cifs_check_receive(mid, tcon->ses->server, 0);
+		if (wdata->result != 0)
+			break;
+
+		written = le16_to_cpu(smb->CountHigh);
+		written <<= 16;
+		written += le16_to_cpu(smb->Count);
+		/*
+		 * Mask off high 16 bits when bytes written as returned
+		 * by the server is greater than bytes requested by the
+		 * client. OS/2 servers are known to set incorrect
+		 * CountHigh values.
+		 */
+		if (written > wdata->bytes)
+			written &= 0xFFFF;
+
+		if (written < wdata->bytes)
+			wdata->result = -ENOSPC;
+		else
+			wdata->bytes = written;
+		break;
+	case MID_REQUEST_SUBMITTED:
+	case MID_RETRY_NEEDED:
+		wdata->result = -EAGAIN;
+		break;
+	default:
+		wdata->result = -EIO;
+		break;
+	}
+
+	queue_work(system_nrt_wq, &wdata->work);
+	DeleteMidQEntry(mid);
+	atomic_dec(&tcon->ses->server->inFlight);
+	wake_up(&tcon->ses->server->request_q);
+}
+
+/* cifs_async_writev - send an async write, and set up mid to handle result */
 int
-CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
-	     const int netfid, const unsigned int count,
-	     const __u64 offset, unsigned int *nbytes, struct kvec *iov,
-	     int n_vec, const int long_op)
+cifs_async_writev(struct cifs_writedata *wdata)
+{
+	int i, rc = -EACCES;
+	WRITE_REQ *smb = NULL;
+	int wct;
+	struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
+	struct inode *inode = wdata->cfile->dentry->d_inode;
+	struct kvec *iov = NULL;
+
+	if (tcon->ses->capabilities & CAP_LARGE_FILES) {
+		wct = 14;
+	} else {
+		wct = 12;
+		if (wdata->offset >> 32 > 0) {
+			/* can not handle big offset for old srv */
+			return -EIO;
+		}
+	}
+
+	rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb);
+	if (rc)
+		goto async_writev_out;
+
+	/* 1 iov per page + 1 for header */
+	iov = kzalloc((wdata->nr_pages + 1) * sizeof(*iov), GFP_NOFS);
+	if (iov == NULL) {
+		rc = -ENOMEM;
+		goto async_writev_out;
+	}
+
+	smb->hdr.Pid = cpu_to_le16((__u16)wdata->cfile->pid);
+	smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->cfile->pid >> 16));
+
+	smb->AndXCommand = 0xFF;	/* none */
+	smb->Fid = wdata->cfile->netfid;
+	smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF);
+	if (wct == 14)
+		smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32);
+	smb->Reserved = 0xFFFFFFFF;
+	smb->WriteMode = 0;
+	smb->Remaining = 0;
+
+	smb->DataOffset =
+	    cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
+
+	/* 4 for RFC1001 length + 1 for BCC */
+	iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1;
+	iov[0].iov_base = smb;
+
+	/* marshal up the pages into iov array */
+	wdata->bytes = 0;
+	for (i = 0; i < wdata->nr_pages; i++) {
+		iov[i + 1].iov_len = min(inode->i_size -
+				      page_offset(wdata->pages[i]),
+					(loff_t)PAGE_CACHE_SIZE);
+		iov[i + 1].iov_base = kmap(wdata->pages[i]);
+		wdata->bytes += iov[i + 1].iov_len;
+	}
+
+	cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes);
+
+	smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF);
+	smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16);
+
+	if (wct == 14) {
+		inc_rfc1001_len(&smb->hdr, wdata->bytes + 1);
+		put_bcc(wdata->bytes + 1, &smb->hdr);
+	} else {
+		/* wct == 12 */
+		struct smb_com_writex_req *smbw =
+				(struct smb_com_writex_req *)smb;
+		inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5);
+		put_bcc(wdata->bytes + 5, &smbw->hdr);
+		iov[0].iov_len += 4; /* pad bigger by four bytes */
+	}
+
+	kref_get(&wdata->refcount);
+	rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1,
+			     cifs_writev_callback, wdata, false);
+
+	if (rc == 0)
+		cifs_stats_inc(&tcon->num_writes);
+	else
+		kref_put(&wdata->refcount, cifs_writedata_release);
+
+	/* send is done, unmap pages */
+	for (i = 0; i < wdata->nr_pages; i++)
+		kunmap(wdata->pages[i]);
+
+async_writev_out:
+	cifs_small_buf_release(smb);
+	kfree(iov);
+	return rc;
+}
+
+int
+CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms,
+	      unsigned int *nbytes, struct kvec *iov, int n_vec,
+	      const int long_op)
 {
 	int rc = -EACCES;
 	WRITE_REQ *pSMB = NULL;
 	int wct;
 	int smb_hdr_len;
 	int resp_buf_type = 0;
+	__u32 pid = io_parms->pid;
+	__u16 netfid = io_parms->netfid;
+	__u64 offset = io_parms->offset;
+	struct cifs_tcon *tcon = io_parms->tcon;
+	unsigned int count = io_parms->length;
 
 	*nbytes = 0;
 
···
 	rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB);
 	if (rc)
 		return rc;
+
+	pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
+	pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
+
 	/* tcon and ses pointer are checked in smb_init */
 	if (tcon->ses->server == NULL)
 		return -ECONNABORTED;
···
 
 
 int
-CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBLock(const int xid, struct cifs_tcon *tcon,
 	    const __u16 smb_file_id, const __u64 len,
 	    const __u64 offset, const __u32 numUnlock,
 	    const __u32 numLock, const __u8 lockType,
···
 }
 
 int
-CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon,
 		const __u16 smb_file_id, const int get_flag, const __u64 len,
 		struct file_lock *pLockData, const __u16 lock_type,
 		const bool waitFlag)
···
 
 
 int
-CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
+CIFSSMBClose(const int xid, struct cifs_tcon *tcon, int smb_file_id)
 {
 	int rc = 0;
 	CLOSE_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
+CIFSSMBFlush(const int xid, struct cifs_tcon *tcon, int smb_file_id)
 {
 	int rc = 0;
 	FLUSH_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBRename(const int xid, struct cifs_tcon *tcon,
 	      const char *fromName, const char *toName,
 	      const struct nls_table *nls_codepage, int remap)
 {
···
 	return rc;
 }
 
-int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon,
+int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon,
 		int netfid, const char *target_name,
 		const struct nls_table *nls_codepage, int remap)
 {
···
 }
 
 int
-CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName,
+CIFSSMBCopy(const int xid, struct cifs_tcon *tcon, const char *fromName,
 	    const __u16 target_tid, const char *toName, const int flags,
 	    const struct nls_table *nls_codepage, int remap)
 {
···
 }
 
 int
-CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon,
+CIFSUnixCreateSymLink(const int xid, struct cifs_tcon *tcon,
 		      const char *fromName, const char *toName,
 		      const struct nls_table *nls_codepage)
 {
···
 }
 
 int
-CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon,
+CIFSUnixCreateHardLink(const int xid, struct cifs_tcon *tcon,
 		       const char *fromName, const char *toName,
 		       const struct nls_table *nls_codepage, int remap)
 {
···
 }
 
 int
-CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon,
+CIFSCreateHardLink(const int xid, struct cifs_tcon *tcon,
 		   const char *fromName, const char *toName,
 		   const struct nls_table *nls_codepage, int remap)
 {
···
 }
 
 int
-CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBUnixQuerySymLink(const int xid, struct cifs_tcon *tcon,
 			const unsigned char *searchName, char **symlinkinfo,
 			const struct nls_table *nls_codepage)
 {
···
  *	it is not compiled in by default until callers fixed up and more tested.
  */
 int
-CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBQueryReparseLinkInfo(const int xid, struct cifs_tcon *tcon,
 			const unsigned char *searchName,
 			char *symlinkinfo, const int buflen, __u16 fid,
 			const struct nls_table *nls_codepage)
···
 }
 
 int
-CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon,
 		   const unsigned char *searchName,
 		   char *acl_inf, const int buflen, const int acl_type,
 		   const struct nls_table *nls_codepage, int remap)
···
 }
 
 int
-CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon,
 		   const unsigned char *fileName,
 		   const char *local_acl, const int buflen,
 		   const int acl_type,
···
 
 /* BB fix tabs in this function FIXME BB */
 int
-CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
+CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon,
 	       const int netfid, __u64 *pExtAttrBits, __u64 *pMask)
 {
 	int rc = 0;
···
  */
 static int
 smb_init_nttransact(const __u16 sub_command, const int setup_count,
-		   const int parm_len, struct cifsTconInfo *tcon,
+		   const int parm_len, struct cifs_tcon *tcon,
 		   void **ret_buf)
 {
 	int rc;
···
 
 /* Get Security Descriptor (by handle) from remote server for a file or dir */
 int
-CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
+CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid,
 		  struct cifs_ntsd **acl_inf, __u32 *pbuflen)
 {
 	int rc = 0;
···
 }
 
 int
-CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
+CIFSSMBSetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid,
 			struct cifs_ntsd *pntsd, __u32 acllen)
 {
 	__u16 byte_count, param_count, data_count, param_offset, data_offset;
···
 
 /* Legacy Query Path Information call for lookup to old servers such
    as Win9x/WinME */
-int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
+int SMBQueryInformation(const int xid, struct cifs_tcon *tcon,
 			const unsigned char *searchName,
 			FILE_ALL_INFO *pFinfo,
 			const struct nls_table *nls_codepage, int remap)
···
 }
 
 int
-CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon,
 		 u16 netfid, FILE_ALL_INFO *pFindData)
 {
 	struct smb_t2_qfi_req *pSMB = NULL;
···
 }
 
 int
-CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon,
 		 const unsigned char *searchName,
 		 FILE_ALL_INFO *pFindData,
 		 int legacy /* old style infolevel */,
···
 }
 
 int
-CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon,
 		 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData)
 {
 	struct smb_t2_qfi_req *pSMB = NULL;
···
 }
 
 int
-CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBUnixQPathInfo(const int xid, struct cifs_tcon *tcon,
 		     const unsigned char *searchName,
 		     FILE_UNIX_BASIC_INFO *pFindData,
 		     const struct nls_table *nls_codepage, int remap)
···
 
 /* xid, tcon, searchName and codepage are input parms, rest are returned */
 int
-CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
+CIFSFindFirst(const int xid, struct cifs_tcon *tcon,
 	      const char *searchName,
 	      const struct nls_table *nls_codepage,
 	      __u16 *pnetfid,
···
 	return rc;
 }
 
-int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
+int CIFSFindNext(const int xid, struct cifs_tcon *tcon,
 		 __u16 searchHandle, struct cifs_search_info *psrch_inf)
 {
 	TRANSACTION2_FNEXT_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSFindClose(const int xid, struct cifsTconInfo *tcon,
+CIFSFindClose(const int xid, struct cifs_tcon *tcon,
 	      const __u16 searchHandle)
 {
 	int rc = 0;
···
 }
 
 int
-CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
+CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon,
 		      const unsigned char *searchName,
 		      __u64 *inode_number,
 		      const struct nls_table *nls_codepage, int remap)
···
 }
 
 int
-CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
+CIFSGetDFSRefer(const int xid, struct cifs_ses *ses,
 		const unsigned char *searchName,
 		struct dfs_info3_param **target_nodes,
 		unsigned int *num_of_nodes,
···
 	}
 
 	if (ses->server) {
-		if (ses->server->secMode &
+		if (ses->server->sec_mode &
 		   (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
 			pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
 	}
···
 
 /* Query File System Info such as free space to old servers such as Win 9x */
 int
-SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData)
+SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData)
 {
 /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */
 	TRANSACTION2_QFSI_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData)
+CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData)
 {
 /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */
 	TRANSACTION2_QFSI_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon)
+CIFSSMBQFSAttributeInfo(const int xid, struct cifs_tcon *tcon)
 {
 /* level 0x105  SMB_QUERY_FILE_SYSTEM_INFO */
 	TRANSACTION2_QFSI_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon)
+CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon)
 {
 /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */
 	TRANSACTION2_QFSI_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon)
+CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon)
 {
 /* level 0x200  SMB_QUERY_CIFS_UNIX_INFO */
 	TRANSACTION2_QFSI_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap)
+CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon, __u64 cap)
 {
 /* level 0x200  SMB_SET_CIFS_UNIX_INFO */
 	TRANSACTION2_SETFSI_REQ *pSMB = NULL;
···
 
 
 int
-CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon,
 		   struct kstatfs *FSData)
 {
 /* level 0x201  SMB_QUERY_CIFS_POSIX_INFO */
···
    in Samba which this routine can run into */
 
 int
-CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName,
+CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon, const char *fileName,
 	      __u64 size, bool SetAllocation,
 	      const struct nls_table *nls_codepage, int remap)
 {
···
 }
 
 int
-CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
+CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon, __u64 size,
 		   __u16 fid, __u32 pid_of_opener, bool SetAllocation)
 {
 	struct smb_com_transaction2_sfi_req *pSMB  = NULL;
···
    time and resort to the original setpathinfo level which takes the ancient
    DOS time format with 2 second granularity */
 int
-CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon,
 		    const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener)
 {
 	struct smb_com_transaction2_sfi_req *pSMB  = NULL;
···
 }
 
 int
-CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon,
 			  bool delete_file, __u16 fid, __u32 pid_of_opener)
 {
 	struct smb_com_transaction2_sfi_req *pSMB  = NULL;
···
 }
 
 int
-CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon,
 		   const char *fileName, const FILE_BASIC_INFO *data,
 		   const struct nls_table *nls_codepage, int remap)
 {
···
 	  handling it anyway and NT4 was what we thought it would be needed for
 	  Do not delete it until we prove whether needed for Win9x though */
 int
-CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName,
+CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon, char *fileName,
 		__u16 dos_attrs, const struct nls_table *nls_codepage)
 {
 	SETATTR_REQ *pSMB = NULL;
···
 }
 
 int
-CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon,
 		       const struct cifs_unix_set_info_args *args,
 		       u16 fid, u32 pid_of_opener)
 {
···
 }
 
 int
-CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *tcon, char *fileName,
+CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *tcon, char *fileName,
 		       const struct cifs_unix_set_info_args *args,
 		       const struct nls_table *nls_codepage, int remap)
 {
···
  * the data isn't copied to it, but the length is returned.
  */
 ssize_t
-CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
+CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon,
 		const unsigned char *searchName, const unsigned char *ea_name,
 		char *EAData, size_t buf_size,
 		const struct nls_table *nls_codepage, int remap)
···
 }
 
 int
-CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName,
+CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon, const char *fileName,
 	     const char *ea_name, const void *ea_value,
 	     const __u16 ea_value_len, const struct nls_table *nls_codepage,
 	     int remap)
···
  *	incompatible for network fs clients, we could instead simply
  *	expose this config flag by adding a future cifs (and smb2) notify ioctl.
  */
-int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
+int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon,
 		  const int notify_subdirs, const __u16 netfid,
 		  __u32 filter, struct file *pfile, int multishot,
 		  const struct nls_table *nls_codepage)

fs/cifs/connect.c

···
 
 extern mempool_t *cifs_req_poolp;
 
-struct smb_vol {
-	char *username;
-	char *password;
-	char *domainname;
-	char *UNC;
-	char *UNCip;
-	char *iocharset;  /* local code page for mapping to and from Unicode */
-	char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
-	char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
-	uid_t cred_uid;
-	uid_t linux_uid;
-	gid_t linux_gid;
-	mode_t file_mode;
-	mode_t dir_mode;
-	unsigned secFlg;
-	bool retry:1;
-	bool intr:1;
-	bool setuids:1;
-	bool override_uid:1;
-	bool override_gid:1;
-	bool dynperm:1;
-	bool noperm:1;
-	bool no_psx_acl:1; /* set if posix acl support should be disabled */
-	bool cifs_acl:1;
-	bool no_xattr:1;   /* set if xattr (EA) support should be disabled*/
-	bool server_ino:1; /* use inode numbers from server ie UniqueId */
-	bool direct_io:1;
-	bool strict_io:1; /* strict cache behavior */
-	bool remap:1;      /* set to remap seven reserved chars in filenames */
-	bool posix_paths:1; /* unset to not ask for posix pathnames. */
-	bool no_linux_ext:1;
-	bool sfu_emul:1;
-	bool nullauth:1;   /* attempt to authenticate with null user */
-	bool nocase:1;     /* request case insensitive filenames */
-	bool nobrl:1;      /* disable sending byte range locks to srv */
-	bool mand_lock:1;  /* send mandatory not posix byte range lock reqs */
-	bool seal:1;       /* request transport encryption on share */
-	bool nodfs:1;      /* Do not request DFS, even if available */
-	bool local_lease:1; /* check leases only on local system, not remote */
-	bool noblocksnd:1;
-	bool noautotune:1;
-	bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
-	bool fsc:1;	/* enable fscache */
-	bool mfsymlinks:1; /* use Minshall+French Symlinks */
-	bool multiuser:1;
-	bool use_smb2:1; /* force smb2 use on mount instead of cifs */
-	unsigned int rsize;
-	unsigned int wsize;
-	bool sockopt_tcp_nodelay:1;
-	unsigned short int port;
-	unsigned long actimeo; /* attribute cache timeout (jiffies) */
-	char *prepath;
-	struct sockaddr_storage srcaddr; /* allow binding to a local IP */
-	struct nls_table *local_nls;
-};
-
 /* FIXME: should these be tunable? */
 #define TLINK_ERROR_EXPIRE	(1 * HZ)
 #define TLINK_IDLE_EXPIRE	(600 * HZ)
···
 {
 	int rc = 0;
 	struct list_head *tmp, *tmp2;
-	struct cifsSesInfo *ses;
-	struct cifsTconInfo *tcon;
+	struct cifs_ses *ses;
+	struct cifs_tcon *tcon;
 	struct mid_q_entry *mid_entry;
+	struct list_head retry_list;
 
 	spin_lock(&GlobalMid_Lock);
 	if (server->tcpStatus == CifsExiting) {
···
 	cFYI(1, "%s: marking sessions and tcons for reconnect", __func__);
 	spin_lock(&cifs_tcp_ses_lock);
 	list_for_each(tmp, &server->smb_ses_list) {
-		ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
+		ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
 		ses->need_reconnect = true;
 		ses->ipc_tid = 0;
 		list_for_each(tmp2, &ses->tcon_list) {
-			tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list);
+			tcon = list_entry(tmp2, struct cifs_tcon, tcon_list);
 			tcon->need_reconnect = true;
 		}
 	}
···
 	mutex_unlock(&server->srv_mutex);
 
 	/* mark submitted MIDs for retry and issue callback */
-	cFYI(1, "%s: issuing mid callbacks", __func__);
+	INIT_LIST_HEAD(&retry_list);
+	cFYI(1, "%s: moving mids to private list", __func__);
 	spin_lock(&GlobalMid_Lock);
 	list_for_each_safe(tmp, tmp2, &server->pending_mid_q) {
 		mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
 		if (mid_entry->midState == MID_REQUEST_SUBMITTED)
 			mid_entry->midState = MID_RETRY_NEEDED;
+		list_move(&mid_entry->qhead, &retry_list);
+	}
+	spin_unlock(&GlobalMid_Lock);
+
+	cFYI(1, "%s: issuing mid callbacks", __func__);
+	list_for_each_safe(tmp, tmp2, &retry_list) {
+		mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
 		list_del_init(&mid_entry->qhead);
 		mid_entry->callback(mid_entry);
 	}
-	spin_unlock(&GlobalMid_Lock);
 
 	while (server->tcpStatus == CifsNeedReconnect) {
 		try_to_freeze();
···
 			mid_entry->when_received = jiffies;
 #endif
 			list_del_init(&mid_entry->qhead);
-			mid_entry->callback(mid_entry);
 			break;
 		}
 		spin_unlock(&GlobalMid_Lock);
 
 		if (mid_entry != NULL) {
+			mid_entry->callback(mid_entry);
 			/* Was previous buf put in mpx struct for multi-rsp? */
 			if (!isMultiRsp) {
 				/* smb buffer will be freed by user thread */
···
 		cifs_small_buf_release(smallbuf);
 
 	if (!list_empty(&server->pending_mid_q)) {
+		struct list_head dispose_list;
+
+		INIT_LIST_HEAD(&dispose_list);
 		spin_lock(&GlobalMid_Lock);
 		list_for_each_safe(tmp, tmp2, &server->pending_mid_q) {
 			mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
-			cFYI(1, "Clearing Mid 0x%x - issuing callback",
-					 mid_entry->mid);
+			cFYI(1, "Clearing mid 0x%x", mid_entry->mid);
+			mid_entry->midState = MID_SHUTDOWN;
+			list_move(&mid_entry->qhead, &dispose_list);
+		}
+		spin_unlock(&GlobalMid_Lock);
+
+		/* now walk dispose list and issue callbacks */
+		list_for_each_safe(tmp, tmp2, &dispose_list) {
+			mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
+			cFYI(1, "Callback mid 0x%x", mid_entry->mid);
 			list_del_init(&mid_entry->qhead);
 			mid_entry->callback(mid_entry);
 		}
-		spin_unlock(&GlobalMid_Lock);
 		/* 1/8th of sec is more than enough time for them to exit */
 		msleep(125);
 	}
···
 				   (strnicmp(value, "1", 1) == 0)) {
 				/* this is the default */
 				continue;
-			} else if ((strnicmp(value, "smb2", 4) == 0) ||
-				   (strnicmp(value, "2", 1) == 0)) {
-#ifdef CONFIG_CIFS_SMB2
-				vol->use_smb2 = true;
-#else
-				cERROR(1, "smb2 support not enabled");
-#endif /* CONFIG_CIFS_SMB2 */
 			}
 		} else if ((strnicmp(data, "unc", 3) == 0)
 			   || (strnicmp(data, "target", 6) == 0)
···
 			vol->server_ino = 1;
 		} else if (strnicmp(data, "noserverino", 9) == 0) {
 			vol->server_ino = 0;
+		} else if (strnicmp(data, "rwpidforward", 4) == 0) {
+			vol->rwpidforward = 1;
 		} else if (strnicmp(data, "cifsacl", 7) == 0) {
 			vol->cifs_acl = 1;
 		} else if (strnicmp(data, "nocifsacl", 9) == 0) {
···
 
 	/* now check if signing mode is acceptable */
 	if ((secFlags & CIFSSEC_MAY_SIGN) == 0 &&
-	    (server->secMode & SECMODE_SIGN_REQUIRED))
+	    (server->sec_mode & SECMODE_SIGN_REQUIRED))
 			return false;
 	else if (((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) &&
-		 (server->secMode &
+		 (server->sec_mode &
 		  (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED)) == 0)
 			return false;
 
 	return true;
+}
+
+static int match_server(struct TCP_Server_Info *server, struct sockaddr *addr,
+			 struct smb_vol *vol)
+{
+	if (!net_eq(cifs_net_ns(server), current->nsproxy->net_ns))
+		return 0;
+
+	if (!match_address(server, addr,
+			   (struct sockaddr *)&vol->srcaddr))
+		return 0;
+
+	if (!match_port(server, addr))
+		return 0;
+
+	if (!match_security(server, vol))
+		return 0;
+
+	return 1;
 }
 
 static struct TCP_Server_Info *
···
 
 	spin_lock(&cifs_tcp_ses_lock);
 	list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
-		if (!net_eq(cifs_net_ns(server), current->nsproxy->net_ns))
-			continue;
-
-		if (!match_address(server, addr,
-				   (struct sockaddr *)&vol->srcaddr))
-			continue;
-
-		if (!match_port(server, addr))
-			continue;
-
-		if (!match_security(server, vol))
+		if (!match_server(server, addr, vol))
 			continue;
 
 		++server->srv_count;
···
 	return ERR_PTR(rc);
 }
 
-static struct cifsSesInfo *
+static int match_session(struct cifs_ses *ses, struct smb_vol *vol)
+{
+	switch (ses->server->secType) {
+	case Kerberos:
+		if (vol->cred_uid != ses->cred_uid)
+			return 0;
+		break;
+	default:
+		/* anything else takes username/password */
+		if (ses->user_name == NULL)
+			return 0;
+		if (strncmp(ses->user_name, vol->username,
+			    MAX_USERNAME_SIZE))
+			return 0;
+		if (strlen(vol->username) != 0 &&
+		    ses->password != NULL &&
+		    strncmp(ses->password,
+			    vol->password ? vol->password : "",
+			    MAX_PASSWORD_SIZE))
+			return 0;
+	}
+	return 1;
+}
+
+static struct cifs_ses *
 cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol)
 {
-	struct cifsSesInfo *ses;
+	struct cifs_ses *ses;
 
 	spin_lock(&cifs_tcp_ses_lock);
 	list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
-		switch (server->secType) {
-		case Kerberos:
-			if (vol->cred_uid != ses->cred_uid)
-				continue;
-			break;
-		default:
-			/* anything else takes username/password */
-			if (ses->user_name == NULL)
-				continue;
-			if (strncmp(ses->user_name, vol->username,
-				    MAX_USERNAME_SIZE))
-				continue;
-			if (strlen(vol->username) != 0 &&
-			    ses->password != NULL &&
-			    strncmp(ses->password,
-				    vol->password ? vol->password : "",
-				    MAX_PASSWORD_SIZE))
-				continue;
-		}
+		if (!match_session(ses, vol))
+			continue;
 		++ses->ses_count;
 		spin_unlock(&cifs_tcp_ses_lock);
 		return ses;
···
 }
 
 static void
-cifs_put_smb_ses(struct cifsSesInfo *ses)
+cifs_put_smb_ses(struct cifs_ses *ses)
 {
 	int xid;
 	struct TCP_Server_Info *server = ses->server;
···
 
 static bool warned_on_ntlm;  /* globals init to false automatically */
 
-static struct cifsSesInfo *
+static struct cifs_ses *
 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
 {
 	int rc = -ENOMEM, xid;
-	struct cifsSesInfo *ses;
+	struct cifs_ses *ses;
 	struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr;
 	struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr;
 
···
 	return ERR_PTR(rc);
 }
 
-static struct cifsTconInfo *
-cifs_find_tcon(struct cifsSesInfo *ses, const char *unc)
+static int match_tcon(struct cifs_tcon *tcon, const char *unc)
+{
+	if (tcon->tidStatus == CifsExiting)
+		return 0;
+	if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE))
+		return 0;
+	return 1;
+}
+
+static struct cifs_tcon *
+cifs_find_tcon(struct cifs_ses *ses, const char *unc)
 {
 	struct list_head *tmp;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 
 	spin_lock(&cifs_tcp_ses_lock);
 	list_for_each(tmp, &ses->tcon_list) {
-		tcon = list_entry(tmp, struct cifsTconInfo, tcon_list);
-		if (tcon->tidStatus == CifsExiting)
+		tcon = list_entry(tmp, struct cifs_tcon, tcon_list);
+		if (!match_tcon(tcon, unc))
 			continue;
-		if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE))
-			continue;
-
 		++tcon->tc_count;
 		spin_unlock(&cifs_tcp_ses_lock);
 		return tcon;
···
 }
 
 static void
-cifs_put_tcon(struct cifsTconInfo *tcon)
+cifs_put_tcon(struct cifs_tcon *tcon)
 {
 	int xid;
-	struct cifsSesInfo *ses = tcon->ses;
+	struct cifs_ses *ses = tcon->ses;
 
 	cFYI(1, "%s: tc_count=%d\n", __func__, tcon->tc_count);
 	spin_lock(&cifs_tcp_ses_lock);
···
 	cifs_put_smb_ses(ses);
 }
 
-static struct cifsTconInfo *
-cifs_get_tcon(struct cifsSesInfo *ses, struct smb_vol *volume_info)
+static struct cifs_tcon *
+cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
 {
 	int rc, xid;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 
 	tcon = cifs_find_tcon(ses, volume_info->UNC);
 	if (tcon) {
···
 	return;
 }
 
+static inline struct tcon_link *
+cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb);
+
+static int
+compare_mount_options(struct super_block *sb, struct cifs_mnt_data *mnt_data)
+{
+	struct cifs_sb_info *old = CIFS_SB(sb);
+	struct cifs_sb_info *new = mnt_data->cifs_sb;
+
+	if ((sb->s_flags & CIFS_MS_MASK) != (mnt_data->flags & CIFS_MS_MASK))
+		return 0;
+
+	if ((old->mnt_cifs_flags & CIFS_MOUNT_MASK) !=
+	    (new->mnt_cifs_flags & CIFS_MOUNT_MASK))
+		return 0;
+
+	if (old->rsize != new->rsize)
+		return 0;
+
+	/*
+	 * We want to share sb only if we don't specify wsize or specified wsize
+	 * is greater or equal than existing one.
+	 */
+	if (new->wsize && new->wsize < old->wsize)
+		return 0;
+
+	if (old->mnt_uid != new->mnt_uid || old->mnt_gid != new->mnt_gid)
+		return 0;
+
+	if (old->mnt_file_mode != new->mnt_file_mode ||
+	    old->mnt_dir_mode != new->mnt_dir_mode)
+		return 0;
+
+	if (strcmp(old->local_nls->charset, new->local_nls->charset))
+		return 0;
+
+	if (old->actimeo != new->actimeo)
+		return 0;
+
+	return 1;
+}
+
 int
-get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path,
+cifs_match_super(struct super_block *sb, void *data)
+{
+	struct cifs_mnt_data *mnt_data = (struct cifs_mnt_data *)data;
+	struct smb_vol *volume_info;
+	struct cifs_sb_info *cifs_sb;
+	struct TCP_Server_Info *tcp_srv;
+	struct cifs_ses *ses;
+	struct cifs_tcon *tcon;
+	struct tcon_link *tlink;
+	struct sockaddr_storage addr;
+	int rc = 0;
+
+	memset(&addr, 0, sizeof(struct sockaddr_storage));
+
+	spin_lock(&cifs_tcp_ses_lock);
+	cifs_sb = CIFS_SB(sb);
+	tlink = cifs_get_tlink(cifs_sb_master_tlink(cifs_sb));
+	if (IS_ERR(tlink)) {
+		spin_unlock(&cifs_tcp_ses_lock);
+		return rc;
+	}
+	tcon = tlink_tcon(tlink);
+	ses = tcon->ses;
+	tcp_srv = ses->server;
+
+	volume_info = mnt_data->vol;
+
+	if (!volume_info->UNCip || !volume_info->UNC)
+		goto out;
+
+	rc = cifs_fill_sockaddr((struct sockaddr *)&addr,
+				volume_info->UNCip,
+				strlen(volume_info->UNCip),
+				volume_info->port);
+	if (!rc)
+		goto out;
+
+	if (!match_server(tcp_srv, (struct sockaddr *)&addr, volume_info) ||
+	    !match_session(ses, volume_info) ||
+	    !match_tcon(tcon, volume_info->UNC)) {
+		rc = 0;
+		goto out;
+	}
+
+	rc = compare_mount_options(sb, mnt_data);
+out:
+	cifs_put_tlink(tlink);
+	spin_unlock(&cifs_tcp_ses_lock);
+	return rc;
+}
+
+int
+get_dfs_path(int xid, struct cifs_ses *pSesInfo, const char *old_path,
 	     const struct nls_table *nls_codepage, unsigned int *pnum_referrals,
 	     struct dfs_info3_param **preferrals, int remap)
 {
···
 	return generic_ip_connect(server);
 }
 
-void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon,
+void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon,
 			  struct super_block *sb, struct smb_vol *vol_info)
 {
 	/* if we are reconnecting then should we check to see if
···
 
 	if (!CIFSSMBQFSUnixInfo(xid, tcon)) {
 		__u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
-
+		cFYI(1, "unix caps which server supports %lld", cap);
 		/* check for reconnect case in which we do not
 		   want to change the mount behavior if we can avoid it */
 		if (vol_info == NULL) {
···
 				cERROR(1, "server disabled POSIX path support");
 			}
 		}
+
+		if (cap & CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP)
+			cERROR(1, "per-share encryption not supported yet");
 
 		cap &= CIFS_UNIX_CAP_MASK;
 		if (vol_info && vol_info->no_psx_acl)
···
 				CIFS_SB(sb)->mnt_cifs_flags |=
 					CIFS_MOUNT_POSIX_PATHS;
 		}
-
-		/* We might be setting the path sep back to a different
-		form if we are reconnecting and the server switched its
-		posix path capability for this share */
-		if (sb && (CIFS_SB(sb)->prepathlen > 0))
-			CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb));
 
 		if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) {
 			if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) {
···
 			cFYI(1, "very large read cap");
 		if (cap & CIFS_UNIX_LARGE_WRITE_CAP)
 			cFYI(1, "very large write cap");
+		if (cap & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)
+			cFYI(1, "transport encryption cap");
+		if (cap & CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP)
+			cFYI(1, "mandatory transport encryption cap");
 #endif /* CIFS_DEBUG2 */
 		if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) {
 			if (vol_info == NULL) {
···
 	}
 }
 
-static void
-convert_delimiter(char *path, char delim)
-{
-	int i;
-	char old_delim;
-
-	if (path == NULL)
-		return;
-
-	if (delim == '/')
-		old_delim = '\\';
-	else
-		old_delim = '/';
-
-	for (i = 0; path[i] != '\0'; i++) {
-		if (path[i] == old_delim)
-			path[i] = delim;
-	}
-}
-
-static void setup_cifs_sb(struct smb_vol *pvolume_info,
-			  struct cifs_sb_info *cifs_sb)
+void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
+			struct cifs_sb_info *cifs_sb)
 {
 	INIT_DELAYED_WORK(&cifs_sb->prune_tlinks, cifs_prune_tlinks);
 
···
 	else /* default */
 		cifs_sb->rsize = CIFSMaxBufSize;
 
-	if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
-		cERROR(1, "wsize %d too large, using 4096 instead",
-			  pvolume_info->wsize);
-		cifs_sb->wsize = 4096;
-	} else if (pvolume_info->wsize)
-		cifs_sb->wsize = pvolume_info->wsize;
-	else
-		cifs_sb->wsize = min_t(const int,
-					PAGEVEC_SIZE * PAGE_CACHE_SIZE,
-					127*1024);
-		/* old default of CIFSMaxBufSize was too small now
-		   that SMB Write2 can send multiple pages in kvec.
-		   RFC1001 does not describe what happens when frame
-		   bigger than 128K is sent so use that as max in
-		   conjunction with 52K kvec constraint on arch with 4K
-		   page size  */
-
 	if (cifs_sb->rsize < 2048) {
 		cifs_sb->rsize = 2048;
 		/* Windows ME may prefer this */
 		cFYI(1, "readsize set to minimum: 2048");
 	}
-	/* calculate prepath */
-	cifs_sb->prepath = pvolume_info->prepath;
-	if (cifs_sb->prepath) {
-		cifs_sb->prepathlen = strlen(cifs_sb->prepath);
-		/* we can not convert the / to \ in the path
-		separators in the prefixpath yet because we do not
-		know (until reset_cifs_unix_caps is called later)
-		whether POSIX PATH CAP is available. We normalize
-		the / to \ after reset_cifs_unix_caps is called */
-		pvolume_info->prepath = NULL;
-	} else
-		cifs_sb->prepathlen = 0;
+
+	/*
+	 * Temporarily set wsize for matching superblock. If we end up using
+	 * new sb then cifs_negotiate_wsize will later negotiate it downward
+	 * if needed.
+	 */
+	cifs_sb->wsize = pvolume_info->wsize;
+
 	cifs_sb->mnt_uid = pvolume_info->linux_uid;
 	cifs_sb->mnt_gid = pvolume_info->linux_gid;
 	cifs_sb->mnt_file_mode = pvolume_info->file_mode;
···
 		cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode);
 
 	cifs_sb->actimeo = pvolume_info->actimeo;
+	cifs_sb->local_nls = pvolume_info->local_nls;
 
 	if (pvolume_info->noperm)
 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
···
 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC;
 	if (pvolume_info->mand_lock)
 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL;
+	if (pvolume_info->rwpidforward)
+		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_RWPIDFORWARD;
 	if (pvolume_info->cifs_acl)
 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
 	if (pvolume_info->override_uid)
···
 			   "mount option supported");
 }
 
+/*
+ * When the server supports very large writes via POSIX extensions, we can
+ * allow up to 2^24 - PAGE_CACHE_SIZE.
+ *
+ * Note that this might make for "interesting" allocation problems during
+ * writeback however (as we have to allocate an array of pointers for the
+ * pages). A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096.
+ */
+#define CIFS_MAX_WSIZE ((1<<24) - PAGE_CACHE_SIZE)
+
+/*
+ * When the server doesn't allow large posix writes, default to a wsize of
+ * 128k - PAGE_CACHE_SIZE -- one page less than the largest frame size
+ * described in RFC1001. This allows space for the header without going over
+ * that by default.
+ */
+#define CIFS_MAX_RFC1001_WSIZE (128 * 1024 - PAGE_CACHE_SIZE)
+
+/*
+ * The default wsize is 1M. find_get_pages seems to return a maximum of 256
+ * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill
+ * a single wsize request with a single call.
+ */
+#define CIFS_DEFAULT_WSIZE (1024 * 1024)
+
+static unsigned int
+cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info)
+{
+	__u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
+	struct TCP_Server_Info *server = tcon->ses->server;
+	unsigned int wsize = pvolume_info->wsize ? pvolume_info->wsize :
+				CIFS_DEFAULT_WSIZE;
+
+	/* can server support 24-bit write sizes? (via UNIX extensions) */
+	if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
+		wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1001_WSIZE);
+
+	/* no CAP_LARGE_WRITE_X? Limit it to 16 bits */
+	if (!(server->capabilities & CAP_LARGE_WRITE_X))
+		wsize = min_t(unsigned int, wsize, USHRT_MAX);
+
+	/* hard limit of CIFS_MAX_WSIZE */
+	wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
+
+	return wsize;
+}
+
 static int
-is_path_accessible(int xid, struct cifsTconInfo *tcon,
+is_path_accessible(int xid, struct cifs_tcon *tcon,
 		   struct cifs_sb_info *cifs_sb, const char *full_path)
 {
 	int rc;
···
 	return rc;
 }
 
-static void
-cleanup_volume_info(struct smb_vol **pvolume_info)
+void
+cifs_cleanup_volume_info(struct smb_vol **pvolume_info)
 {
 	struct smb_vol *volume_info;
 
···
 	char *full_path;
 
 	int unc_len = strnlen(volume_info->UNC, MAX_TREE_SIZE + 1);
-	full_path = kmalloc(unc_len + cifs_sb->prepathlen + 1, GFP_KERNEL);
+	full_path = kmalloc(unc_len + 1, GFP_KERNEL);
 	if (full_path == NULL)
 		return ERR_PTR(-ENOMEM);
 
 	strncpy(full_path, volume_info->UNC, unc_len);
-	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
-		int i;
-		for (i = 0; i < unc_len; i++) {
-			if (full_path[i] == '\\')
-				full_path[i] = '/';
-		}
-	}
-
-	if (cifs_sb->prepathlen)
-		strncpy(full_path + unc_len, cifs_sb->prepath,
-				cifs_sb->prepathlen);
-
-	full_path[unc_len + cifs_sb->prepathlen] = 0; /* add trailing null */
+	full_path[unc_len] = 0; /* add trailing null */
+	convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb));
 	return full_path;
 }
 
···
  * determine whether there were referrals.
  */
 static int
-expand_dfs_referral(int xid, struct cifsSesInfo *pSesInfo,
+expand_dfs_referral(int xid, struct cifs_ses *pSesInfo,
 		    struct smb_vol *volume_info, struct cifs_sb_info *cifs_sb,
 		    int check_prefix)
 {
···
 }
 #endif
 
-int
-cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
-		const char *devname)
+int cifs_setup_volume_info(struct smb_vol **pvolume_info, char *mount_data,
+			   const char *devname)
 {
-	int rc;
-	int xid;
 	struct smb_vol *volume_info;
-	struct cifsSesInfo *pSesInfo;
-	struct cifsTconInfo *tcon;
-	struct TCP_Server_Info *srvTcp;
-	char   *full_path;
-	struct tcon_link *tlink;
-#ifdef CONFIG_CIFS_DFS_UPCALL
-	int referral_walks_count = 0;
-try_mount_again:
-	/* cleanup activities if we're chasing a referral */
-	if (referral_walks_count) {
-		if (tcon)
-			cifs_put_tcon(tcon);
-		else if (pSesInfo)
-			cifs_put_smb_ses(pSesInfo);
+	int rc = 0;
 
-		cleanup_volume_info(&volume_info);
-		FreeXid(xid);
-	}
-#endif
-	rc = 0;
-	tcon = NULL;
-	pSesInfo = NULL;
-	srvTcp = NULL;
-	full_path = NULL;
-	tlink = NULL;
-
-	xid = GetXid();
+	*pvolume_info = NULL;
 
 	volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL);
 	if (!volume_info) {
···
 		goto out;
 	}
 
-	if (cifs_parse_mount_options(cifs_sb->mountdata, devname,
+	if (cifs_parse_mount_options(mount_data, devname,
 				     volume_info)) {
 		rc = -EINVAL;
 		goto out;
···
 			goto out;
 		}
 	}
-	cifs_sb->local_nls = volume_info->local_nls;
+
+	*pvolume_info = volume_info;
+	return rc;
+out:
+	cifs_cleanup_volume_info(&volume_info);
+	return rc;
+}
+
+int
+cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
+	   struct smb_vol *volume_info, const char *devname)
+{
+	int rc = 0;
+	int xid;
+	struct cifs_ses *pSesInfo;
+	struct cifs_tcon *tcon;
+	struct TCP_Server_Info *srvTcp;
+	char   *full_path;
+	struct tcon_link *tlink;
+#ifdef CONFIG_CIFS_DFS_UPCALL
+	int referral_walks_count = 0;
+try_mount_again:
+	/* cleanup activities if we're chasing a referral */
+	if (referral_walks_count) {
+		if (tcon)
+			cifs_put_tcon(tcon);
+		else if (pSesInfo)
+			cifs_put_smb_ses(pSesInfo);
+
+		cifs_cleanup_volume_info(&volume_info);
+		FreeXid(xid);
+	}
+#endif
+	tcon = NULL;
+	pSesInfo = NULL;
+	srvTcp = NULL;
+	full_path = NULL;
+	tlink = NULL;
+
+	xid = GetXid();
 
 	/* get a reference to a tcp session */
 	srvTcp = cifs_get_tcp_session(volume_info);
···
 		goto mount_fail_check;
 	}
 
-	setup_cifs_sb(volume_info, cifs_sb);
 	if (pSesInfo->capabilities & CAP_LARGE_FILES)
 		sb->s_maxbytes = MAX_LFS_FILESIZE;
 	else
···
 		goto remote_path_check;
 	}
 
+	/* tell server which Unix caps we support */
+	if (tcon->ses->capabilities & CAP_UNIX) {
+		/* reset of caps checks mount to see if unix extensions
+		   disabled for just this mount */
+		reset_cifs_unix_caps(xid, tcon, sb, volume_info);
+		if ((tcon->ses->server->tcpStatus == CifsNeedReconnect) &&
+		    (le64_to_cpu(tcon->fsUnixInfo.Capability) &
+		     CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP)) {
+			rc = -EACCES;
+			goto mount_fail_check;
+		}
+	} else
+		tcon->unix_ext = 0; /* server does not support them */
+
 	/* do not care if following two calls succeed - informational */
 	if (!tcon->ipc) {
 		CIFSSMBQFSDeviceInfo(xid, tcon);
 		CIFSSMBQFSAttributeInfo(xid, tcon);
 	}
 
-	/* tell server which Unix caps we support */
-	if (tcon->ses->capabilities & CAP_UNIX)
-		/* reset of caps checks mount to see if unix extensions
-		   disabled for just this mount */
-		reset_cifs_unix_caps(xid, tcon, sb, volume_info);
-	else
-		tcon->unix_ext = 0; /* server does not support them */
-
-	/* convert forward to back slashes in prepath here if needed */
-	if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0)
-		convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb));
-
 	if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) {
 		cifs_sb->rsize = 1024 * 127;
 		cFYI(DBG2, "no very large read support, rsize now 127K");
 	}
-	if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X))
-		cifs_sb->wsize = min(cifs_sb->wsize,
-			       (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
 	if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
 		cifs_sb->rsize = min(cifs_sb->rsize,
 			       (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
+
+	cifs_sb->wsize = cifs_negotiate_wsize(tcon, volume_info);
 
 remote_path_check:
 #ifdef CONFIG_CIFS_DFS_UPCALL
···
 	}
 #endif
 
-	/* check if a whole path (including prepath) is not remote */
+	/* check if a whole path is not remote */
 	if (!rc && tcon) {
 		/* build_path_to_root works only when we have a valid tcon */
-		full_path = cifs_build_path_to_root(cifs_sb, tcon);
+		full_path = cifs_build_path_to_root(volume_info, cifs_sb, tcon);
 		if (full_path == NULL) {
 			rc = -ENOMEM;
 			goto mount_fail_check;
···
 			rc = -ELOOP;
 			goto mount_fail_check;
 		}
-		/* convert forward to back slashes in prepath here if needed */
-		if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0)
-			convert_delimiter(cifs_sb->prepath,
-					CIFS_DIR_SEP(cifs_sb));
 
 		rc = expand_dfs_referral(xid, pSesInfo, volume_info, cifs_sb,
 					 true);
···
 	password will be freed at unmount time) */
 out:
 	/* zero out password before freeing */
-	cleanup_volume_info(&volume_info);
 	FreeXid(xid);
 	return rc;
 }
 
 int
-CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
-	 const char *tree, struct cifsTconInfo *tcon,
+CIFSTCon(unsigned int xid, struct cifs_ses *ses,
+	 const char *tree, struct cifs_tcon *tcon,
 	 const struct nls_table *nls_codepage)
 {
 	struct smb_hdr *smb_buffer;
···
 	pSMB->AndXCommand = 0xFF;
 	pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO);
 	bcc_ptr = &pSMB->Password[0];
-	if ((ses->server->secMode) & SECMODE_USER) {
+	if ((ses->server->sec_mode) & SECMODE_USER) {
 		pSMB->PasswordLength = cpu_to_le16(1);	/* minimum */
 		*bcc_ptr = 0; /* password is null byte */
 		bcc_ptr++;              /* skip password */
···
 		if ((global_secflags & CIFSSEC_MAY_LANMAN) &&
 		    (ses->server->secType == LANMAN))
 			calc_lanman_hash(tcon->password, ses->server->cryptkey,
-					 ses->server->secMode &
+					 ses->server->sec_mode &
 					    SECMODE_PW_ENCRYPT ? true : false,
 					 bcc_ptr);
 		else
···
 		}
 	}
 
-	if (ses->server->secMode &
+	if (ses->server->sec_mode &
 			(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
 		smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
 
···
 	struct rb_root *root = &cifs_sb->tlink_tree;
 	struct rb_node *node;
 	struct tcon_link *tlink;
-	char *tmp;
 
 	cancel_delayed_work_sync(&cifs_sb->prune_tlinks);
 
···
 	}
 	spin_unlock(&cifs_sb->tlink_tree_lock);
 
-	tmp = cifs_sb->prepath;
-	cifs_sb->prepathlen = 0;
-	cifs_sb->prepath = NULL;
-	kfree(tmp);
-
 	return 0;
 }
 
-int cifs_negotiate_protocol(unsigned int xid, struct cifsSesInfo *ses)
+int cifs_negotiate_protocol(unsigned int xid, struct cifs_ses *ses)
 {
 	int rc = 0;
 	struct TCP_Server_Info *server = ses->server;
···
 }
 
 
-int cifs_setup_session(unsigned int xid, struct cifsSesInfo *ses,
+int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,
 			struct nls_table *nls_info)
 {
 	int rc = 0;
···
 		ses->capabilities &= (~CAP_UNIX);
 
 	cFYI(1, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d",
-		 server->secMode, server->capabilities, server->timeAdj);
+		 server->sec_mode, server->capabilities, server->timeAdj);
 
 	rc = CIFS_SessSetup(xid, ses, nls_info);
 	if (rc) {
···
 	return rc;
 }
 
-static struct cifsTconInfo *
+static struct cifs_tcon *
 cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid)
 {
-	struct cifsTconInfo *master_tcon = cifs_sb_master_tcon(cifs_sb);
-	struct cifsSesInfo *ses;
-	struct cifsTconInfo *tcon = NULL;
+	struct cifs_tcon *master_tcon = cifs_sb_master_tcon(cifs_sb);
+	struct cifs_ses *ses;
+	struct cifs_tcon *tcon = NULL;
 	struct smb_vol *vol_info;
 	char username[28]; /* big enough for "krb50x" + hex of ULONG_MAX 6+16 */
 			   /* We used to have this as MAX_USERNAME which is   */
···
 
 	ses = cifs_get_smb_ses(master_tcon->ses->server, vol_info);
 	if (IS_ERR(ses)) {
-		tcon = (struct cifsTconInfo *)ses;
+		tcon = (struct cifs_tcon *)ses;
 		cifs_put_tcp_session(master_tcon->ses->server);
 		goto out;
 	}
···
 	return cifs_sb->master_tlink;
 }
 
-struct cifsTconInfo *
+struct cifs_tcon *
 cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb)
 {
 	return tlink_tcon(cifs_sb_master_tlink(cifs_sb));

fs/cifs/dir.c

···
 {
 	struct dentry *temp;
 	int namelen;
-	int pplen;
 	int dfsplen;
 	char *full_path;
 	char dirsep;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
-	struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
 
 	if (direntry == NULL)
 		return NULL;  /* not much we can do if dentry is freed and
···
 		when the server crashed */
 
 	dirsep = CIFS_DIR_SEP(cifs_sb);
-	pplen = cifs_sb->prepathlen;
 	if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
 		dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
 	else
 		dfsplen = 0;
 cifs_bp_rename_retry:
-	namelen = pplen + dfsplen;
+	namelen = dfsplen;
 	for (temp = direntry; !IS_ROOT(temp);) {
 		namelen += (1 + temp->d_name.len);
 		temp = temp->d_parent;
···
 			return NULL;
 		}
 	}
-	if (namelen != pplen + dfsplen) {
+	if (namelen != dfsplen) {
 		cERROR(1, "did not end path lookup where expected namelen is %d",
 			namelen);
 		/* presumably this is only possible if racing with a rename
···
 			}
 		}
 	}
-	strncpy(full_path + dfsplen, CIFS_SB(direntry->d_sb)->prepath, pplen);
 	return full_path;
 }
 
···
 	__u16 fileHandle;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	char *full_path = NULL;
 	FILE_ALL_INFO *buf = NULL;
 	struct inode *newinode = NULL;
···
 	int xid;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
+	struct cifs_io_parms io_parms;
 	char *full_path = NULL;
 	struct inode *newinode = NULL;
 	int oplock = 0;
···
 	 * timestamps in, but we can reuse it safely */
 
 	pdev = (struct win_dev *)buf;
+	io_parms.netfid = fileHandle;
+	io_parms.pid = current->tgid;
+	io_parms.tcon = pTcon;
+	io_parms.offset = 0;
+	io_parms.length = sizeof(struct win_dev);
 	if (S_ISCHR(mode)) {
 		memcpy(pdev->type, "IntxCHR", 8);
 		pdev->major =
 		      cpu_to_le64(MAJOR(device_number));
 		pdev->minor =
 		      cpu_to_le64(MINOR(device_number));
-		rc = CIFSSMBWrite(xid, pTcon,
-			fileHandle,
-			sizeof(struct win_dev),
-			0, &bytes_written, (char *)pdev,
+		rc = CIFSSMBWrite(xid, &io_parms,
+			&bytes_written, (char *)pdev,
 			NULL, 0);
 	} else if (S_ISBLK(mode)) {
 		memcpy(pdev->type, "IntxBLK", 8);
···
 		      cpu_to_le64(MAJOR(device_number));
 		pdev->minor =
 		      cpu_to_le64(MINOR(device_number));
-		rc = CIFSSMBWrite(xid, pTcon,
-			fileHandle,
-			sizeof(struct win_dev),
-			0, &bytes_written, (char *)pdev,
+		rc = CIFSSMBWrite(xid, &io_parms,
+			&bytes_written, (char *)pdev,
 			NULL, 0);
 	} /* else if (S_ISFIFO) */
 	CIFSSMBClose(xid, pTcon, fileHandle);
···
 	bool posix_open = false;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct cifsFileInfo *cfile;
 	struct inode *newInode = NULL;
 	char *full_path = NULL;

fs/cifs/file.c

···
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	struct cifs_fattr fattr;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 
 	cFYI(1, "posix open %s", full_path);
 
···
 
 static int
 cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
-	     struct cifsTconInfo *tcon, unsigned int f_flags, __u32 *poplock,
+	     struct cifs_tcon *tcon, unsigned int f_flags, __u32 *poplock,
 	     __u16 *pnetfid, int xid)
 {
 	int rc;
···
 void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
 {
 	struct inode *inode = cifs_file->dentry->d_inode;
-	struct cifsTconInfo *tcon = tlink_tcon(cifs_file->tlink);
+	struct cifs_tcon *tcon = tlink_tcon(cifs_file->tlink);
 	struct cifsInodeInfo *cifsi = CIFS_I(inode);
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct cifsLockInfo *li, *tmp;
···
 	int xid;
 	__u32 oplock;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	struct tcon_link *tlink;
 	struct cifsFileInfo *pCifsFile = NULL;
 	char *full_path = NULL;
···
 	int xid;
 	__u32 oplock;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	struct cifsInodeInfo *pCifsInode;
 	struct inode *inode;
 	char *full_path = NULL;
···
 	xid = GetXid();
 
 	if (pCFileStruct) {
-		struct cifsTconInfo *pTcon = tlink_tcon(pCFileStruct->tlink);
+		struct cifs_tcon *pTcon = tlink_tcon(pCFileStruct->tlink);
 
 		cFYI(1, "Freeing private data in close dir");
 		spin_lock(&cifs_file_list_lock);
···
 	__u64 length;
 	bool wait_flag = false;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	__u16 netfid;
 	__u8 lockType = LOCKING_ANDX_LARGE_FILES;
 	bool posix_locking = 0;
···
 			else
 				posix_lock_type = CIFS_WRLCK;
 			rc = CIFSSMBPosixLock(xid, tcon, netfid, 1 /* get */,
-					length,	pfLock,
-					posix_lock_type, wait_flag);
+					length, pfLock, posix_lock_type,
+					wait_flag);
 			FreeXid(xid);
 			return rc;
 		}
···
 			posix_lock_type = CIFS_UNLCK;
 
 		rc = CIFSSMBPosixLock(xid, tcon, netfid, 0 /* set */,
-				      length, pfLock,
-				      posix_lock_type, wait_flag);
+				      length, pfLock, posix_lock_type,
+				      wait_flag);
 	} else {
 		struct cifsFileInfo *fid = file->private_data;
 
···
 		cifsi->server_eof = end_of_write;
 }
 
-static ssize_t cifs_write(struct cifsFileInfo *open_file,
+static ssize_t cifs_write(struct cifsFileInfo *open_file, __u32 pid,
 			  const char *write_data, size_t write_size,
 			  loff_t *poffset)
 {
···
 	unsigned int bytes_written = 0;
 	unsigned int total_written;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	int xid;
 	struct dentry *dentry = open_file->dentry;
 	struct cifsInodeInfo *cifsi = CIFS_I(dentry->d_inode);
+	struct cifs_io_parms io_parms;
 
 	cifs_sb = CIFS_SB(dentry->d_sb);
 
···
 			/* iov[0] is reserved for smb header */
 			iov[1].iov_base = (char *)write_data + total_written;
 			iov[1].iov_len = len;
-			rc = CIFSSMBWrite2(xid, pTcon, open_file->netfid, len,
-					   *poffset, &bytes_written, iov, 1, 0);
+			io_parms.netfid = open_file->netfid;
+			io_parms.pid = pid;
+			io_parms.tcon = pTcon;
+			io_parms.offset = *poffset;
+			io_parms.length = len;
+			rc = CIFSSMBWrite2(xid, &io_parms, &bytes_written, iov,
+					   1, 0);
 		}
 		if (rc || (bytes_written == 0)) {
 			if (total_written)
···
 
 	open_file = find_writable_file(CIFS_I(mapping->host), false);
 	if (open_file) {
-		bytes_written = cifs_write(open_file, write_data,
-					   to - from, &offset);
+		bytes_written = cifs_write(open_file, open_file->pid,
+					   write_data, to - from, &offset);
 		cifsFileInfo_put(open_file);
 		/* Does mm or vfs already set times? */
 		inode->i_atime = inode->i_mtime = current_fs_time(inode->i_sb);
···
 static int cifs_writepages(struct address_space *mapping,
 			   struct writeback_control *wbc)
 {
-	unsigned int bytes_to_write;
-	unsigned int bytes_written;
-	struct cifs_sb_info *cifs_sb;
-	int done = 0;
-	pgoff_t end;
-	pgoff_t index;
-	int range_whole = 0;
-	struct kvec *iov;
-	int len;
-	int n_iov = 0;
-	pgoff_t next;
-	int nr_pages;
-	__u64 offset = 0;
-	struct cifsFileInfo *open_file;
-	struct cifsTconInfo *tcon;
-	struct cifsInodeInfo *cifsi = CIFS_I(mapping->host);
+	struct cifs_sb_info *cifs_sb = CIFS_SB(mapping->host->i_sb);
+	bool done = false, scanned = false, range_whole = false;
+	pgoff_t end, index;
+	struct cifs_writedata *wdata;
 	struct page *page;
-	struct pagevec pvec;
 	int rc = 0;
-	int scanned = 0;
-	int xid;
-
-	cifs_sb = CIFS_SB(mapping->host->i_sb);
 
 	/*
-	 * If wsize is smaller that the page cache size, default to writing
+	 * If wsize is smaller than the page cache size, default to writing
 	 * one page at a time via cifs_writepage
 	 */
 	if (cifs_sb->wsize < PAGE_CACHE_SIZE)
 		return generic_writepages(mapping, wbc);
 
-	iov = kmalloc(32 * sizeof(struct kvec), GFP_KERNEL);
-	if (iov == NULL)
-		return generic_writepages(mapping, wbc);
-
-	/*
-	 * if there's no open file, then this is likely to fail too,
-	 * but it'll at least handle the return. Maybe it should be
-	 * a BUG() instead?
-	 */
-	open_file = find_writable_file(CIFS_I(mapping->host), false);
-	if (!open_file) {
-		kfree(iov);
-		return generic_writepages(mapping, wbc);
-	}
-
-	tcon = tlink_tcon(open_file->tlink);
-	cifsFileInfo_put(open_file);
-
-	xid = GetXid();
-
-	pagevec_init(&pvec, 0);
 	if (wbc->range_cyclic) {
 		index = mapping->writeback_index; /* Start from prev offset */
 		end = -1;
···
 		index = wbc->range_start >> PAGE_CACHE_SHIFT;
 		end = wbc->range_end >> PAGE_CACHE_SHIFT;
 		if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
-			range_whole = 1;
-		scanned = 1;
+			range_whole = true;
+		scanned = true;
 	}
 retry:
-	while (!done && (index <= end) &&
-	       (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
-			PAGECACHE_TAG_DIRTY,
-			min(end - index, (pgoff_t)PAGEVEC_SIZE - 1) + 1))) {
-		int first;
-		unsigned int i;
+	while (!done && index <= end) {
+		unsigned int i, nr_pages, found_pages;
+		pgoff_t next = 0, tofind;
+		struct page **pages;
 
-		first = -1;
-		next = 0;
-		n_iov = 0;
-		bytes_to_write = 0;
+		tofind = min((cifs_sb->wsize / PAGE_CACHE_SIZE) - 1,
+				end - index) + 1;
 
-		for (i = 0; i < nr_pages; i++) {
-			page = pvec.pages[i];
+		wdata = cifs_writedata_alloc((unsigned int)tofind);
+		if (!wdata) {
+			rc = -ENOMEM;
+			break;
+		}
+
+		/*
+		 * find_get_pages_tag seems to return a max of 256 on each
+		 * iteration, so we must call it several times in order to
+		 * fill the array or the wsize is effectively limited to
+		 * 256 * PAGE_CACHE_SIZE.
+		 */
+		found_pages = 0;
+		pages = wdata->pages;
+		do {
+			nr_pages = find_get_pages_tag(mapping, &index,
+							PAGECACHE_TAG_DIRTY,
+							tofind, pages);
+			found_pages += nr_pages;
+			tofind -= nr_pages;
+			pages += nr_pages;
+		} while (nr_pages && tofind && index <= end);
+
+		if (found_pages == 0) {
+			kref_put(&wdata->refcount, cifs_writedata_release);
+			break;
+		}
+
+		nr_pages = 0;
+		for (i = 0; i < found_pages; i++) {
+			page = wdata->pages[i];
 			/*
 			 * At this point we hold neither mapping->tree_lock nor
 			 * lock on the page itself: the page may be truncated or
···
 			 * mapping
 			 */
 
-			if (first < 0)
+			if (nr_pages == 0)
 				lock_page(page);
 			else if (!trylock_page(page))
 				break;
···
 			}
 
 			if (!wbc->range_cyclic && page->index > end) {
-				done = 1;
+				done = true;
 				unlock_page(page);
 				break;
 			}
···
 			set_page_writeback(page);
 
 			if (page_offset(page) >= mapping->host->i_size) {
-				done = 1;
+				done = true;
 				unlock_page(page);
 				end_page_writeback(page);
 				break;
 			}
 
-			/*
-			 * BB can we get rid of this?  pages are held by pvec
-			 */
-			page_cache_get(page);
-
-			len = min(mapping->host->i_size - page_offset(page),
-				  (loff_t)PAGE_CACHE_SIZE);
-
-			/* reserve iov[0] for the smb header */
-			n_iov++;
-			iov[n_iov].iov_base = kmap(page);
-			iov[n_iov].iov_len = len;
-			bytes_to_write += len;
-
-			if (first < 0) {
-				first = i;
-				offset = page_offset(page);
-			}
+			wdata->pages[i] = page;
 			next = page->index + 1;
-			if (bytes_to_write + PAGE_CACHE_SIZE > cifs_sb->wsize)
-				break;
+			++nr_pages;
 		}
-		if (n_iov) {
-retry_write:
-			open_file = find_writable_file(CIFS_I(mapping->host),
-							false);
-			if (!open_file) {
+
+		/* reset index to refind any pages skipped */
+		if (nr_pages == 0)
+			index = wdata->pages[0]->index + 1;
+
+		/* put any pages we aren't going to use */
+		for (i = nr_pages; i < found_pages; i++) {
+			page_cache_release(wdata->pages[i]);
+			wdata->pages[i] = NULL;
+		}
+
+		/* nothing to write? */
+		if (nr_pages == 0) {
+			kref_put(&wdata->refcount, cifs_writedata_release);
+			continue;
+		}
+
+		wdata->sync_mode = wbc->sync_mode;
+		wdata->nr_pages = nr_pages;
+		wdata->offset = page_offset(wdata->pages[0]);
+
+		do {
+			if (wdata->cfile != NULL)
+				cifsFileInfo_put(wdata->cfile);
+			wdata->cfile = find_writable_file(CIFS_I(mapping->host),
+							  false);
+			if (!wdata->cfile) {
 				cERROR(1, "No writable handles for inode");
 				rc = -EBADF;
-			} else {
-				rc = CIFSSMBWrite2(xid, tcon, open_file->netfid,
-						   bytes_to_write, offset,
-						   &bytes_written, iov, n_iov,
-						   0);
-				cifsFileInfo_put(open_file);
+				break;
 			}
+			rc = cifs_async_writev(wdata);
+		} while (wbc->sync_mode == WB_SYNC_ALL && rc == -EAGAIN);
 
-			cFYI(1, "Write2 rc=%d, wrote=%u", rc, bytes_written);
+		for (i = 0; i < nr_pages; ++i)
+			unlock_page(wdata->pages[i]);
 
-			/*
-			 * For now, treat a short write as if nothing got
-			 * written. A zero length write however indicates
-			 * ENOSPC or EFBIG. We have no way to know which
-			 * though, so call it ENOSPC for now. EFBIG would
-			 * get translated to AS_EIO anyway.
-			 *
-			 * FIXME: make it take into account the data that did
-			 *	  get written
-			 */
-			if (rc == 0) {
-				if (bytes_written == 0)
-					rc = -ENOSPC;
-				else if (bytes_written < bytes_to_write)
-					rc = -EAGAIN;
-			}
-
-			/* retry on data-integrity flush */
-			if (wbc->sync_mode == WB_SYNC_ALL && rc == -EAGAIN)
-				goto retry_write;
-
-			/* fix the stats and EOF */
-			if (bytes_written > 0) {
-				cifs_stats_bytes_written(tcon, bytes_written);
-				cifs_update_eof(cifsi, offset, bytes_written);
-			}
-
-			for (i = 0; i < n_iov; i++) {
-				page = pvec.pages[first + i];
-				/* on retryable write error, redirty page */
+		/* send failure -- clean up the mess */
+		if (rc != 0) {
+			for (i = 0; i < nr_pages; ++i) {
 				if (rc == -EAGAIN)
-					redirty_page_for_writepage(wbc, page);
-				else if (rc != 0)
-					SetPageError(page);
-				kunmap(page);
-				unlock_page(page);
-				end_page_writeback(page);
-				page_cache_release(page);
+					redirty_page_for_writepage(wbc,
+							   wdata->pages[i]);
+				else
+					SetPageError(wdata->pages[i]);
+				end_page_writeback(wdata->pages[i]);
+				page_cache_release(wdata->pages[i]);
 			}
-
 			if (rc != -EAGAIN)
 				mapping_set_error(mapping, rc);
-			else
-				rc = 0;
+		}
+		kref_put(&wdata->refcount, cifs_writedata_release);
 
-			if ((wbc->nr_to_write -= n_iov) <= 0)
-				done = 1;
-			index = next;
-		} else
-			/* Need to re-find the pages we skipped */
-			index = pvec.pages[0]->index + 1;
+		wbc->nr_to_write -= nr_pages;
+		if (wbc->nr_to_write <= 0)
+			done = true;
 
-		pagevec_release(&pvec);
+		index = next;
 	}
+
 	if (!scanned && !done) {
 		/*
 		 * We hit the last page and there is more work to be done: wrap
 		 * back to the start of the file
 		 */
-		scanned = 1;
+		scanned = true;
 		index = 0;
 		goto retry;
 	}
+
 	if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
 		mapping->writeback_index = index;
 
-	FreeXid(xid);
-	kfree(iov);
 	return rc;
 }
 
···
 {
 	int rc;
 	struct inode *inode = mapping->host;
+	struct cifsFileInfo *cfile = file->private_data;
+	struct cifs_sb_info *cifs_sb = CIFS_SB(cfile->dentry->d_sb);
+	__u32 pid;
+
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
+		pid = cfile->pid;
+	else
+		pid = current->tgid;
 
 	cFYI(1, "write_end for page %p from pos %lld with %d bytes",
 		 page, pos, copied);
···
 		/* BB check if anything else missing out of ppw
 		   such as updating last write time */
 		page_data = kmap(page);
-		rc = cifs_write(file->private_data, page_data + offset,
-				copied, &pos);
+		rc = cifs_write(cfile, pid, page_data + offset, copied, &pos);
 		/* if (rc < 0) should we set writebehind rc? */
 		kunmap(page);
 
···
 {
 	int xid;
 	int rc = 0;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	struct cifsFileInfo *smbfile = file->private_data;
 	struct inode *inode = file->f_path.dentry->d_inode;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
···
 {
 	int xid;
 	int rc = 0;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	struct cifsFileInfo *smbfile = file->private_data;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
 
···
 	struct iov_iter it;
 	struct inode *inode;
 	struct cifsFileInfo *open_file;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct cifs_sb_info *cifs_sb;
+	struct cifs_io_parms io_parms;
 	int xid, rc;
+	__u32 pid;
 
 	len = iov_length(iov, nr_segs);
 	if (!len)
···
 
 	xid = GetXid();
 	open_file = file->private_data;
+
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
+		pid = open_file->pid;
+	else
+		pid = current->tgid;
+
 	pTcon = tlink_tcon(open_file->tlink);
 	inode = file->f_path.dentry->d_inode;
 
···
 				if (rc != 0)
 					break;
 			}
-			rc = CIFSSMBWrite2(xid, pTcon, open_file->netfid,
-					   cur_len, *poffset, &written,
-					   to_send, npages, 0);
+			io_parms.netfid = open_file->netfid;
+			io_parms.pid = pid;
+			io_parms.tcon = pTcon;
+			io_parms.offset = *poffset;
+			io_parms.length = cur_len;
+			rc = CIFSSMBWrite2(xid, &io_parms, &written, to_send,
+					   npages, 0);
 		} while (rc == -EAGAIN);
 
 		for (i = 0; i < npages; i++)
···
 	size_t len, cur_len;
 	int iov_offset = 0;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct cifsFileInfo *open_file;
 	struct smb_com_read_rsp *pSMBr;
+	struct cifs_io_parms io_parms;
 	char *read_data;
+	__u32 pid;
 
 	if (!nr_segs)
 		return 0;
···
 
 	open_file = file->private_data;
 	pTcon = tlink_tcon(open_file->tlink);
+
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
+		pid = open_file->pid;
+	else
+		pid = current->tgid;
 
 	if ((file->f_flags & O_ACCMODE) == O_WRONLY)
 		cFYI(1, "attempting read on write only file instance");
···
 				if (rc != 0)
 					break;
 			}
-			rc = CIFSSMBRead(xid, pTcon, open_file->netfid,
-					 cur_len, *poffset, &bytes_read,
+			io_parms.netfid = open_file->netfid;
+			io_parms.pid = pid;
+			io_parms.tcon = pTcon;
+			io_parms.offset = *poffset;
+			io_parms.length = len;
+			rc = CIFSSMBRead(xid, &io_parms, &bytes_read,
 					 &read_data, &buf_type);
 			pSMBr = (struct smb_com_read_rsp *)read_data;
 			if (read_data) {
···
 	unsigned int total_read;
 	unsigned int current_read_size;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	int xid;
 	char *current_offset;
 	struct cifsFileInfo *open_file;
+	struct cifs_io_parms io_parms;
 	int buf_type = CIFS_NO_BUFFER;
+	__u32 pid;
 
 	xid = GetXid();
 	cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
···
 	}
 	open_file = file->private_data;
 	pTcon = tlink_tcon(open_file->tlink);
+
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
+		pid = open_file->pid;
+	else
+		pid = current->tgid;
 
 	if ((file->f_flags & O_ACCMODE) == O_WRONLY)
 		cFYI(1, "attempting read on write only file instance");
···
 				if (rc != 0)
 					break;
 			}
-			rc = CIFSSMBRead(xid, pTcon,
-					 open_file->netfid,
-					 current_read_size, *poffset,
-					 &bytes_read, &current_offset,
-					 &buf_type);
+			io_parms.netfid = open_file->netfid;
+			io_parms.pid = pid;
+			io_parms.tcon = pTcon;
+			io_parms.offset = *poffset;
+			io_parms.length = current_read_size;
+			rc = CIFSSMBRead(xid, &io_parms, &bytes_read,
+					 &current_offset, &buf_type);
 		}
 		if (rc || (bytes_read == 0)) {
 			if (total_read) {
···
 	loff_t offset;
 	struct page *page;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	unsigned int bytes_read = 0;
 	unsigned int read_size, i;
 	char *smb_read_data = NULL;
 	struct smb_com_read_rsp *pSMBr;
 	struct cifsFileInfo *open_file;
+	struct cifs_io_parms io_parms;
 	int buf_type = CIFS_NO_BUFFER;
+	__u32 pid;
 
 	xid = GetXid();
 	if (file->private_data == NULL) {
···
 		goto read_complete;
 
 	cFYI(DBG2, "rpages: num pages %d", num_pages);
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
+		pid = open_file->pid;
+	else
+		pid = current->tgid;
+
 	for (i = 0; i < num_pages; ) {
 		unsigned contig_pages;
 		struct page *tmp_page;
···
 				if (rc != 0)
 					break;
 			}
-
-			rc = CIFSSMBRead(xid, pTcon,
-					 open_file->netfid,
-					 read_size, offset,
-					 &bytes_read, &smb_read_data,
-					 &buf_type);
+			io_parms.netfid = open_file->netfid;
+			io_parms.pid = pid;
+			io_parms.tcon = pTcon;
+			io_parms.offset = offset;
+			io_parms.length = read_size;
+			rc = CIFSSMBRead(xid, &io_parms, &bytes_read,
+					 &smb_read_data, &buf_type);
 			/* BB more RC checks ? */
 			if (rc == -EAGAIN) {
 				if (smb_read_data) {

fs/cifs/fscache.c

···
 	server->fscache = NULL;
 }
 
-void cifs_fscache_get_super_cookie(struct cifsTconInfo *tcon)
+void cifs_fscache_get_super_cookie(struct cifs_tcon *tcon)
 {
 	struct TCP_Server_Info *server = tcon->ses->server;
 
···
 				server->fscache, tcon->fscache);
 }
 
-void cifs_fscache_release_super_cookie(struct cifsTconInfo *tcon)
+void cifs_fscache_release_super_cookie(struct cifs_tcon *tcon)
 {
 	cFYI(1, "CIFS: releasing superblock cookie (0x%p)", tcon->fscache);
 	fscache_relinquish_cookie(tcon->fscache, 0);
···
 {
 	struct cifsInodeInfo *cifsi = CIFS_I(inode);
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
-	struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
 
 	if (cifsi->fscache)
 		return;

fs/cifs/fscache.h

···
  */
 extern void cifs_fscache_get_client_cookie(struct TCP_Server_Info *);
 extern void cifs_fscache_release_client_cookie(struct TCP_Server_Info *);
-extern void cifs_fscache_get_super_cookie(struct cifsTconInfo *);
-extern void cifs_fscache_release_super_cookie(struct cifsTconInfo *);
+extern void cifs_fscache_get_super_cookie(struct cifs_tcon *);
+extern void cifs_fscache_release_super_cookie(struct cifs_tcon *);
 
 extern void cifs_fscache_release_inode_cookie(struct inode *);
 extern void cifs_fscache_set_inode_cookie(struct inode *, struct file *);
···
 cifs_fscache_get_client_cookie(struct TCP_Server_Info *server) {}
 static inline void
 cifs_fscache_release_client_cookie(struct TCP_Server_Info *server) {}
-static inline void cifs_fscache_get_super_cookie(struct cifsTconInfo *tcon) {}
+static inline void cifs_fscache_get_super_cookie(struct cifs_tcon *tcon) {}
 static inline void
-cifs_fscache_release_super_cookie(struct cifsTconInfo *tcon) {}
+cifs_fscache_release_super_cookie(struct cifs_tcon *tcon) {}
 
 static inline void cifs_fscache_release_inode_cookie(struct inode *inode) {}
 static inline void cifs_fscache_set_inode_cookie(struct inode *inode,

fs/cifs/inode.c

···
 	struct inode *inode = filp->f_path.dentry->d_inode;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct cifsFileInfo *cfile = filp->private_data;
-	struct cifsTconInfo *tcon = tlink_tcon(cfile->tlink);
+	struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
 
 	xid = GetXid();
 	rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->netfid, &find_data);
···
 	int rc;
 	FILE_UNIX_BASIC_INFO find_data;
 	struct cifs_fattr fattr;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	struct tcon_link *tlink;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 
···
 	int oplock = 0;
 	__u16 netfid;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
+	struct cifs_io_parms io_parms;
 	char buf[24];
 	unsigned int bytes_read;
 	char *pbuf;
···
 	if (rc == 0) {
 		int buf_type = CIFS_NO_BUFFER;
 			/* Read header */
-		rc = CIFSSMBRead(xid, tcon, netfid,
-				 24 /* length */, 0 /* offset */,
-				 &bytes_read, &pbuf, &buf_type);
+		io_parms.netfid = netfid;
+		io_parms.pid = current->tgid;
+		io_parms.tcon = tcon;
+		io_parms.offset = 0;
+		io_parms.length = 24;
+		rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf,
+				 &buf_type);
 		if ((rc == 0) && (bytes_read >= 8)) {
 			if (memcmp("IntxBLK", pbuf, 8) == 0) {
 				cFYI(1, "Block device");
···
 	char ea_value[4];
 	__u32 mode;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 
 	tlink = cifs_sb_tlink(cifs_sb);
 	if (IS_ERR(tlink))
···
 cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
 		       struct cifs_sb_info *cifs_sb, bool adjust_tz)
 {
-	struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
 
 	memset(fattr, 0, sizeof(*fattr));
 	fattr->cf_cifsattrs = le32_to_cpu(info->Attributes);
···
 	struct inode *inode = filp->f_path.dentry->d_inode;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct cifsFileInfo *cfile = filp->private_data;
-	struct cifsTconInfo *tcon = tlink_tcon(cfile->tlink);
+	struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
 
 	xid = GetXid();
 	rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data);
···
 	struct super_block *sb, int xid, const __u16 *pfid)
 {
 	int rc = 0, tmprc;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct tcon_link *tlink;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	char *buf = NULL;
···
 	.lookup = cifs_lookup,
 };
 
-char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb,
-				struct cifsTconInfo *tcon)
+char *cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
+			      struct cifs_tcon *tcon)
 {
-	int pplen = cifs_sb->prepathlen;
+	int pplen = vol->prepath ? strlen(vol->prepath) : 0;
 	int dfsplen;
 	char *full_path = NULL;
 
···
 			}
 		}
 	}
-	strncpy(full_path + dfsplen, cifs_sb->prepath, pplen);
+	strncpy(full_path + dfsplen, vol->prepath, pplen);
 	full_path[dfsplen + pplen] = 0; /* add trailing null */
 	return full_path;
 }
···
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	struct inode *inode = NULL;
 	long rc;
-	char *full_path;
-	struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
-
-	full_path = cifs_build_path_to_root(cifs_sb, tcon);
-	if (full_path == NULL)
-		return ERR_PTR(-ENOMEM);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
 
 	xid = GetXid();
 	if (tcon->unix_ext)
-		rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
+		rc = cifs_get_inode_info_unix(&inode, "", sb, xid);
 	else
-		rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
-						xid, NULL);
+		rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL);
 
 	if (!inode) {
 		inode = ERR_PTR(rc);
···
 	}
 
 out:
-	kfree(full_path);
 	/* can not call macro FreeXid here since in a void func
 	 * TODO: This is no longer true
 	 */
···
 	struct cifsInodeInfo *cifsInode = CIFS_I(inode);
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct tcon_link *tlink = NULL;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	FILE_BASIC_INFO	info_buf;
 
 	if (attrs == NULL)
···
 	struct cifsInodeInfo *cifsInode = CIFS_I(inode);
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct tcon_link *tlink;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	__u32 dosattr, origattr;
 	FILE_BASIC_INFO *info_buf = NULL;
 
···
 	struct super_block *sb = dir->i_sb;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	struct tcon_link *tlink;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	struct iattr *attrs = NULL;
 	__u32 dosattr = 0, origattr = 0;
 
···
 	int xid;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	char *full_path = NULL;
 	struct inode *newinode = NULL;
 	struct cifs_fattr fattr;
···
 	int xid;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	char *full_path = NULL;
 	struct cifsInodeInfo *cifsInode;
 
···
 {
 	struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	__u16 srcfid;
 	int oplock, rc;
 
···
 	char *toName = NULL;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
 	FILE_UNIX_BASIC_INFO *info_buf_target;
 	int xid, rc, tmprc;
···
 		 struct kstat *stat)
 {
 	struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb);
-	struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
 	struct inode *inode = dentry->d_inode;
 	int rc;
 
···
 	struct cifsInodeInfo *cifsInode = CIFS_I(inode);
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct tcon_link *tlink = NULL;
-	struct cifsTconInfo *pTcon = NULL;
+	struct cifs_tcon *pTcon = NULL;
+	struct cifs_io_parms io_parms;
 
 	/*
 	 * To avoid spurious oplock breaks from server, in the case of
···
 		cFYI(1, "SetFSize for attrs rc = %d", rc);
 		if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
 			unsigned int bytes_written;
-			rc = CIFSSMBWrite(xid, pTcon, nfid, 0, attrs->ia_size,
-					  &bytes_written, NULL, NULL, 1);
+
+			io_parms.netfid = nfid;
+			io_parms.pid = npid;
+			io_parms.tcon = pTcon;
+			io_parms.offset = 0;
+			io_parms.length = attrs->ia_size;
+			rc = CIFSSMBWrite(xid, &io_parms, &bytes_written,
+					  NULL, NULL, 1);
 			cFYI(1, "Wrt seteof rc %d", rc);
 		}
 	} else
···
 					CIFS_MOUNT_MAP_SPECIAL_CHR);
 			if (rc == 0) {
 				unsigned int bytes_written;
-				rc = CIFSSMBWrite(xid, pTcon, netfid, 0,
-						  attrs->ia_size,
-						  &bytes_written, NULL,
-						  NULL, 1);
+
+				io_parms.netfid = netfid;
+				io_parms.pid = current->tgid;
+				io_parms.tcon = pTcon;
+				io_parms.offset = 0;
+				io_parms.length = attrs->ia_size;
+				rc = CIFSSMBWrite(xid, &io_parms,
+						  &bytes_written,
+						  NULL, NULL,  1);
 				cFYI(1, "wrt seteof rc %d", rc);
 				CIFSSMBClose(xid, pTcon, netfid);
 			}
···
 	struct cifsInodeInfo *cifsInode = CIFS_I(inode);
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct cifs_unix_set_info_args *args = NULL;
 	struct cifsFileInfo *open_file;
 
···
 {
 	struct inode *inode = direntry->d_inode;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
-	struct cifsTconInfo *pTcon = cifs_sb_master_tcon(cifs_sb);
+	struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb);
 
 	if (pTcon->unix_ext)
 		return cifs_setattr_unix(direntry, attrs);

fs/cifs/ioctl.c

···
 	struct cifs_sb_info *cifs_sb;
 #ifdef CONFIG_CIFS_POSIX
 	struct cifsFileInfo *pSMBFile = filep->private_data;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 	__u64	ExtAttrBits = 0;
 	__u64	ExtAttrMask = 0;
 	__u64   caps;

fs/cifs/link.c

···
 }
 
 static int
-CIFSCreateMFSymLink(const int xid, struct cifsTconInfo *tcon,
+CIFSCreateMFSymLink(const int xid, struct cifs_tcon *tcon,
 		    const char *fromName, const char *toName,
 		    const struct nls_table *nls_codepage, int remap)
 {
···
 	__u16 netfid = 0;
 	u8 *buf;
 	unsigned int bytes_written = 0;
+	struct cifs_io_parms io_parms;
 
 	buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
 	if (!buf)
···
 		return rc;
 	}
 
-	rc = CIFSSMBWrite(xid, tcon, netfid,
-			  CIFS_MF_SYMLINK_FILE_SIZE /* length */,
-			  0 /* offset */,
-			  &bytes_written, buf, NULL, 0);
+	io_parms.netfid = netfid;
+	io_parms.pid = current->tgid;
+	io_parms.tcon = tcon;
+	io_parms.offset = 0;
+	io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
+
+	rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, buf, NULL, 0);
 	CIFSSMBClose(xid, tcon, netfid);
 	kfree(buf);
 	if (rc != 0)
···
 }
 
 static int
-CIFSQueryMFSymLink(const int xid, struct cifsTconInfo *tcon,
+CIFSQueryMFSymLink(const int xid, struct cifs_tcon *tcon,
 		   const unsigned char *searchName, char **symlinkinfo,
 		   const struct nls_table *nls_codepage, int remap)
 {
···
 	unsigned int bytes_read = 0;
 	int buf_type = CIFS_NO_BUFFER;
 	unsigned int link_len = 0;
+	struct cifs_io_parms io_parms;
 	FILE_ALL_INFO file_info;
 
 	rc = CIFSSMBOpen(xid, tcon, searchName, FILE_OPEN, GENERIC_READ,
···
 	if (!buf)
 		return -ENOMEM;
 	pbuf = buf;
+	io_parms.netfid = netfid;
+	io_parms.pid = current->tgid;
+	io_parms.tcon = tcon;
+	io_parms.offset = 0;
+	io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
 
-	rc = CIFSSMBRead(xid, tcon, netfid,
-			 CIFS_MF_SYMLINK_FILE_SIZE /* length */,
-			 0 /* offset */,
-			 &bytes_read, &pbuf, &buf_type);
+	rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type);
 	CIFSSMBClose(xid, tcon, netfid);
 	if (rc != 0) {
 		kfree(buf);
···
 	int oplock = 0;
 	__u16 netfid = 0;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
+	struct cifs_io_parms io_parms;
 	u8 *buf;
 	char *pbuf;
 	unsigned int bytes_read = 0;
···
 		goto out;
 	}
 	pbuf = buf;
+	io_parms.netfid = netfid;
+	io_parms.pid = current->tgid;
+	io_parms.tcon = pTcon;
+	io_parms.offset = 0;
+	io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
 
-	rc = CIFSSMBRead(xid, pTcon, netfid,
-			 CIFS_MF_SYMLINK_FILE_SIZE /* length */,
-			 0 /* offset */,
-			 &bytes_read, &pbuf, &buf_type);
+	rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type);
 	CIFSSMBClose(xid, pTcon, netfid);
 	if (rc != 0) {
 		kfree(buf);
···
 	char *toName = NULL;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct cifsInodeInfo *cifsInode;
 
 	tlink = cifs_sb_tlink(cifs_sb);
···
 	char *target_path = NULL;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct tcon_link *tlink = NULL;
-	struct cifsTconInfo *tcon;
+	struct cifs_tcon *tcon;
 
 	xid = GetXid();
 
···
 	int xid;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	char *full_path = NULL;
 	struct inode *newinode = NULL;
 

fs/cifs/misc.c

···
 	spin_unlock(&GlobalMid_Lock);
 }
 
-struct cifsSesInfo *
+struct cifs_ses *
 sesInfoAlloc(void)
 {
-	struct cifsSesInfo *ret_buf;
+	struct cifs_ses *ret_buf;
 
-	ret_buf = kzalloc(sizeof(struct cifsSesInfo), GFP_KERNEL);
+	ret_buf = kzalloc(sizeof(struct cifs_ses), GFP_KERNEL);
 	if (ret_buf) {
 		atomic_inc(&sesInfoAllocCount);
 		ret_buf->status = CifsNew;
···
 }
 
 void
-sesInfoFree(struct cifsSesInfo *buf_to_free)
+sesInfoFree(struct cifs_ses *buf_to_free)
 {
 	if (buf_to_free == NULL) {
 		cFYI(1, "Null buffer passed to sesInfoFree");
···
 	kfree(buf_to_free);
 }
 
-struct cifsTconInfo *
+struct cifs_tcon *
 tconInfoAlloc(void)
 {
-	struct cifsTconInfo *ret_buf;
-	ret_buf = kzalloc(sizeof(struct cifsTconInfo), GFP_KERNEL);
+	struct cifs_tcon *ret_buf;
+	ret_buf = kzalloc(sizeof(struct cifs_tcon), GFP_KERNEL);
 	if (ret_buf) {
 		atomic_inc(&tconInfoAllocCount);
 		ret_buf->tidStatus = CifsNew;
···
 }
 
 void
-tconInfoFree(struct cifsTconInfo *buf_to_free)
+tconInfoFree(struct cifs_tcon *buf_to_free)
 {
 	if (buf_to_free == NULL) {
 		cFYI(1, "Null buffer passed to tconInfoFree");
···
    case it is responsbility of caller to set the mid */
 void
 header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
-		const struct cifsTconInfo *treeCon, int word_count
+		const struct cifs_tcon *treeCon, int word_count
 		/* length of fixed section (word count) in two byte units  */)
 {
 	struct list_head *temp_item;
-	struct cifsSesInfo *ses;
+	struct cifs_ses *ses;
 	char *temp = (char *) buffer;
 
 	memset(temp, 0, 256); /* bigger than MAX_CIFS_HDR_SIZE */
···
 						 "did not match tcon uid");
 					spin_lock(&cifs_tcp_ses_lock);
 					list_for_each(temp_item, &treeCon->ses->server->smb_ses_list) {
-						ses = list_entry(temp_item, struct cifsSesInfo, smb_ses_list);
+						ses = list_entry(temp_item, struct cifs_ses, smb_ses_list);
 						if (ses->linux_uid == current_fsuid()) {
 							if (ses->server == treeCon->ses->server) {
 								cFYI(1, "found matching uid substitute right smb_uid");
···
 		if (treeCon->nocase)
 			buffer->Flags  |= SMBFLG_CASELESS;
 		if ((treeCon->ses) && (treeCon->ses->server))
-			if (treeCon->ses->server->secMode &
+			if (treeCon->ses->server->sec_mode &
 			  (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
 				buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
 	}
···
 {
 	struct smb_com_lock_req *pSMB = (struct smb_com_lock_req *)buf;
 	struct list_head *tmp, *tmp1, *tmp2;
-	struct cifsSesInfo *ses;
-	struct cifsTconInfo *tcon;
+	struct cifs_ses *ses;
+	struct cifs_tcon *tcon;
 	struct cifsInodeInfo *pCifsInode;
 	struct cifsFileInfo *netfile;
 
···
 	/* look up tcon based on tid & uid */
 	spin_lock(&cifs_tcp_ses_lock);
 	list_for_each(tmp, &srv->smb_ses_list) {
-		ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
+		ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
 		list_for_each(tmp1, &ses->tcon_list) {
-			tcon = list_entry(tmp1, struct cifsTconInfo, tcon_list);
+			tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
 			if (tcon->tid != buf->Tid)
 				continue;
 

fs/cifs/netmisc.c

···
 }
 
 int
-map_smb_to_linux_error(struct smb_hdr *smb, int logErr)
+map_smb_to_linux_error(struct smb_hdr *smb, bool logErr)
 {
 	unsigned int i;
 	int rc = -EIO;	/* if transport error smb error may not be set */

fs/cifs/readdir.c

···
 	int len;
 	int oplock = 0;
 	int rc;
-	struct cifsTconInfo *ptcon = cifs_sb_tcon(cifs_sb);
+	struct cifs_tcon *ptcon = cifs_sb_tcon(cifs_sb);
 	char *tmpbuffer;
 
 	rc = CIFSSMBOpen(xid, ptcon, full_path, FILE_OPEN, GENERIC_READ,
···
 	struct cifsFileInfo *cifsFile;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
 	struct tcon_link *tlink = NULL;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 
 	if (file->private_data == NULL) {
 		tlink = cifs_sb_tlink(cifs_sb);
···
    assume that they are located in the findfirst return buffer.*/
 /* We start counting in the buffer with entry 2 and increment for every
    entry (do not increment for . or .. entry) */
-static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
+static int find_cifs_entry(const int xid, struct cifs_tcon *pTcon,
 	struct file *file, char **ppCurrentEntry, int *num_to_ret)
 {
 	int rc = 0;
···
 {
 	int rc = 0;
 	int xid, i;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct cifsFileInfo *cifsFile = NULL;
 	char *current_entry;
 	int num_to_fill = 0;

fs/cifs/sess.c

···
  * the socket has been reestablished (so we know whether to use vc 0).
  * Called while holding the cifs_tcp_ses_lock, so do not block
  */
-static bool is_first_ses_reconnect(struct cifsSesInfo *ses)
+static bool is_first_ses_reconnect(struct cifs_ses *ses)
 {
 	struct list_head *tmp;
-	struct cifsSesInfo *tmp_ses;
+	struct cifs_ses *tmp_ses;
 
 	list_for_each(tmp, &ses->server->smb_ses_list) {
-		tmp_ses = list_entry(tmp, struct cifsSesInfo,
+		tmp_ses = list_entry(tmp, struct cifs_ses,
 				     smb_ses_list);
 		if (tmp_ses->need_reconnect == false)
 			return false;
···
  *	any vc but zero (some servers reset the connection on vcnum zero)
  *
  */
-static __le16 get_next_vcnum(struct cifsSesInfo *ses)
+static __le16 get_next_vcnum(struct cifs_ses *ses)
 {
 	__u16 vcnum = 0;
 	struct list_head *tmp;
-	struct cifsSesInfo *tmp_ses;
+	struct cifs_ses *tmp_ses;
 	__u16 max_vcs = ses->server->max_vcs;
 	__u16 i;
 	int free_vc_found = 0;
···
 		free_vc_found = 1;
 
 		list_for_each(tmp, &ses->server->smb_ses_list) {
-			tmp_ses = list_entry(tmp, struct cifsSesInfo,
+			tmp_ses = list_entry(tmp, struct cifs_ses,
 					     smb_ses_list);
 			if (tmp_ses->vcnum == i) {
 				free_vc_found = 0;
···
 	return cpu_to_le16(vcnum);
 }
 
-static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB)
+static __u32 cifs_ssetup_hdr(struct cifs_ses *ses, SESSION_SETUP_ANDX *pSMB)
 {
 	__u32 capabilities = 0;
 
···
 	capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
 			CAP_LARGE_WRITE_X | CAP_LARGE_READ_X;
 
-	if (ses->server->secMode &
+	if (ses->server->sec_mode &
 	    (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
 		pSMB->req.hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
 
···
 	*pbcc_area = bcc_ptr;
 }
 
-static void unicode_domain_string(char **pbcc_area, struct cifsSesInfo *ses,
+static void unicode_domain_string(char **pbcc_area, struct cifs_ses *ses,
 				   const struct nls_table *nls_cp)
 {
 	char *bcc_ptr = *pbcc_area;
···
 }
 
 
-static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
+static void unicode_ssetup_strings(char **pbcc_area, struct cifs_ses *ses,
 				   const struct nls_table *nls_cp)
 {
 	char *bcc_ptr = *pbcc_area;
···
 	*pbcc_area = bcc_ptr;
 }
 
-static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
+static void ascii_ssetup_strings(char **pbcc_area, struct cifs_ses *ses,
 				 const struct nls_table *nls_cp)
 {
 	char *bcc_ptr = *pbcc_area;
···
 }
 
 static void
-decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifsSesInfo *ses,
+decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifs_ses *ses,
 		      const struct nls_table *nls_cp)
 {
 	int len;
···
 }
 
 static int decode_ascii_ssetup(char **pbcc_area, __u16 bleft,
-			       struct cifsSesInfo *ses,
+			       struct cifs_ses *ses,
 			       const struct nls_table *nls_cp)
 {
 	int rc = 0;
···
 }
 
 static int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len,
-				    struct cifsSesInfo *ses)
+				    struct cifs_ses *ses)
 {
 	unsigned int tioffset; /* challenge message target info area */
 	unsigned int tilen; /* challenge message target info area length  */
···
 /* We do not malloc the blob, it is passed in pbuffer, because
    it is fixed size, and small, making this approach cleaner */
 static void build_ntlmssp_negotiate_blob(unsigned char *pbuffer,
-					 struct cifsSesInfo *ses)
+					 struct cifs_ses *ses)
 {
 	NEGOTIATE_MESSAGE *sec_blob = (NEGOTIATE_MESSAGE *)pbuffer;
 	__u32 flags;
···
 	flags = NTLMSSP_NEGOTIATE_56 |	NTLMSSP_REQUEST_TARGET |
 		NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE |
 		NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC;
-	if (ses->server->secMode &
+	if (ses->server->sec_mode &
 			(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) {
 		flags |= NTLMSSP_NEGOTIATE_SIGN;
 		if (!ses->server->session_estab)
···
    This function returns the length of the data in the blob */
 static int build_ntlmssp_auth_blob(unsigned char *pbuffer,
 					u16 *buflen,
-				   struct cifsSesInfo *ses,
+				   struct cifs_ses *ses,
 				   const struct nls_table *nls_cp)
 {
 	int rc;
···
 		NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_TARGET_INFO |
 		NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE |
 		NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC;
-	if (ses->server->secMode &
+	if (ses->server->sec_mode &
 	   (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
 		flags |= NTLMSSP_NEGOTIATE_SIGN;
-	if (ses->server->secMode & SECMODE_SIGN_REQUIRED)
+	if (ses->server->sec_mode & SECMODE_SIGN_REQUIRED)
 		flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
 
 	tmp = pbuffer + sizeof(AUTHENTICATE_MESSAGE);
···
 }
 
 int
-CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses,
+CIFS_SessSetup(unsigned int xid, struct cifs_ses *ses,
 	       const struct nls_table *nls_cp)
 {
 	int rc = 0;
···
 		 */
 
 		rc = calc_lanman_hash(ses->password, ses->server->cryptkey,
-				 ses->server->secMode & SECMODE_PW_ENCRYPT ?
+				 ses->server->sec_mode & SECMODE_PW_ENCRYPT ?
 					true : false, lnm_session_key);
 
 		ses->flags |= CIFS_SES_LANMAN;

fs/cifs/transport.c

···
 	return 0;
 }
 
-static int allocate_mid(struct cifsSesInfo *ses, struct smb_hdr *in_buf,
+static int allocate_mid(struct cifs_ses *ses, struct smb_hdr *in_buf,
 			struct mid_q_entry **ppmidQ)
 {
 	if (ses->server->tcpStatus == CifsExiting) {
···
  * the result. Caller is responsible for dealing with timeouts.
  */
 int
-cifs_call_async(struct TCP_Server_Info *server, struct smb_hdr *in_buf,
-		mid_callback_t *callback, void *cbdata)
+cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
+		unsigned int nvec, mid_callback_t *callback, void *cbdata,
+		bool ignore_pend)
 {
 	int rc;
 	struct mid_q_entry *mid;
+	struct smb_hdr *hdr = (struct smb_hdr *)iov[0].iov_base;
 
-	rc = wait_for_free_request(server, CIFS_ASYNC_OP);
+	rc = wait_for_free_request(server, ignore_pend ? CIFS_ASYNC_OP : 0);
 	if (rc)
 		return rc;
 
 	/* enable signing if server requires it */
-	if (server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
-		in_buf->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
+	if (server->sec_mode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+		hdr->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
 
 	mutex_lock(&server->srv_mutex);
-	mid = AllocMidQEntry(in_buf, server);
+	mid = AllocMidQEntry(hdr, server);
 	if (mid == NULL) {
 		mutex_unlock(&server->srv_mutex);
 		return -ENOMEM;
···
 	list_add_tail(&mid->qhead, &server->pending_mid_q);
 	spin_unlock(&GlobalMid_Lock);
 
-	rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
+	rc = cifs_sign_smb2(iov, nvec, server, &mid->sequence_number);
 	if (rc) {
 		mutex_unlock(&server->srv_mutex);
 		goto out_err;
···
 #ifdef CONFIG_CIFS_STATS2
 	atomic_inc(&server->inSend);
 #endif
-	rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
+	rc = smb_sendv(server, iov, nvec);
 #ifdef CONFIG_CIFS_STATS2
 	atomic_dec(&server->inSend);
 	mid->when_sent = jiffies;
···
  *
  */
 int
-SendReceiveNoRsp(const unsigned int xid, struct cifsSesInfo *ses,
+SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
 		struct smb_hdr *in_buf, int flags)
 {
 	int rc;
···
 }
 
 static int
-sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server)
+cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server)
 {
 	int rc = 0;
 
···
 		mid->mid, mid->midState);
 
 	spin_lock(&GlobalMid_Lock);
-	/* ensure that it's no longer on the pending_mid_q */
-	list_del_init(&mid->qhead);
-
 	switch (mid->midState) {
 	case MID_RESPONSE_RECEIVED:
 		spin_unlock(&GlobalMid_Lock);
 		return rc;
-	case MID_REQUEST_SUBMITTED:
-		/* socket is going down, reject all calls */
-		if (server->tcpStatus == CifsExiting) {
-			cERROR(1, "%s: canceling mid=%d cmd=0x%x state=%d",
-			       __func__, mid->mid, mid->command, mid->midState);
-			rc = -EHOSTDOWN;
-			break;
-		}
 	case MID_RETRY_NEEDED:
 		rc = -EAGAIN;
 		break;
 	case MID_RESPONSE_MALFORMED:
 		rc = -EIO;
 		break;
+	case MID_SHUTDOWN:
+		rc = -EHOSTDOWN;
+		break;
 	default:
+		list_del_init(&mid->qhead);
 		cERROR(1, "%s: invalid mid state mid=%d state=%d", __func__,
 			mid->mid, mid->midState);
 		rc = -EIO;
···
 }
 
 int
-SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
+cifs_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server,
+		   bool log_error)
+{
+	dump_smb(mid->resp_buf,
+		 min_t(u32, 92, be32_to_cpu(mid->resp_buf->smb_buf_length)));
+
+	/* convert the length into a more usable form */
+	if (server->sec_mode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) {
+		/* FIXME: add code to kill session */
+		if (cifs_verify_signature(mid->resp_buf, server,
+					  mid->sequence_number + 1) != 0)
+			cERROR(1, "Unexpected SMB signature");
+	}
+
+	/* BB special case reconnect tid and uid here? */
+	return map_smb_to_linux_error(mid->resp_buf, log_error);
+}
+
+int
+SendReceive2(const unsigned int xid, struct cifs_ses *ses,
 	     struct kvec *iov, int n_vec, int *pRespBufType /* ret */,
 	     const int flags)
 {
 	int rc = 0;
 	int long_op;
-	unsigned int receive_len;
 	struct mid_q_entry *midQ;
 	struct smb_hdr *in_buf = iov[0].iov_base;
 
···
 
 	cifs_small_buf_release(in_buf);
 
-	rc = sync_mid_result(midQ, ses->server);
+	rc = cifs_sync_mid_result(midQ, ses->server);
 	if (rc != 0) {
 		atomic_dec(&ses->server->inFlight);
 		wake_up(&ses->server->request_q);
 		return rc;
 	}
 
-	receive_len = be32_to_cpu(midQ->resp_buf->smb_buf_length);
-
-	if (receive_len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) {
-		cERROR(1, "Frame too large received.  Length: %d  Xid: %d",
-			receive_len, xid);
+	if (!midQ->resp_buf || midQ->midState != MID_RESPONSE_RECEIVED) {
 		rc = -EIO;
+		cFYI(1, "Bad MID state?");
 		goto out;
 	}
 
-	/* rcvd frame is ok */
+	iov[0].iov_base = (char *)midQ->resp_buf;
+	iov[0].iov_len = be32_to_cpu(midQ->resp_buf->smb_buf_length) + 4;
+	if (midQ->largeBuf)
+		*pRespBufType = CIFS_LARGE_BUFFER;
+	else
+		*pRespBufType = CIFS_SMALL_BUFFER;
 
-	if (midQ->resp_buf &&
-	    (midQ->midState == MID_RESPONSE_RECEIVED)) {
+	rc = cifs_check_receive(midQ, ses->server, flags & CIFS_LOG_ERROR);
 
-		iov[0].iov_base = (char *)midQ->resp_buf;
-		if (midQ->largeBuf)
-			*pRespBufType = CIFS_LARGE_BUFFER;
-		else
-			*pRespBufType = CIFS_SMALL_BUFFER;
-		iov[0].iov_len = receive_len + 4;
-
-		dump_smb(midQ->resp_buf, 80);
-		/* convert the length into a more usable form */
-		if ((receive_len > 24) &&
-		    (ses->server->secMode & (SECMODE_SIGN_REQUIRED |
-					     SECMODE_SIGN_ENABLED))) {
-			rc = cifs_verify_signature(midQ->resp_buf,
-						ses->server,
-						midQ->sequence_number+1);
-			if (rc) {
-				cERROR(1, "Unexpected SMB signature");
-				/* BB FIXME add code to kill session */
-			}
-		}
-
-		/* BB special case reconnect tid and uid here? */
-		rc = map_smb_to_linux_error(midQ->resp_buf,
-					    flags & CIFS_LOG_ERROR);
-
-		if ((flags & CIFS_NO_RESP) == 0)
-			midQ->resp_buf = NULL;  /* mark it so buf will
-						   not be freed by
-						   delete_mid */
-	} else {
-		rc = -EIO;
-		cFYI(1, "Bad MID state?");
-	}
-
+	/* mark it so buf will not be freed by delete_mid */
+	if ((flags & CIFS_NO_RESP) == 0)
+		midQ->resp_buf = NULL;
 out:
 	delete_mid(midQ);
 	atomic_dec(&ses->server->inFlight);
···
 }
 
 int
-SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
+SendReceive(const unsigned int xid, struct cifs_ses *ses,
 	    struct smb_hdr *in_buf, struct smb_hdr *out_buf,
 	    int *pbytes_returned, const int long_op)
 {
 	int rc = 0;
-	unsigned int receive_len;
 	struct mid_q_entry *midQ;
 
 	if (ses == NULL) {
···
 		spin_unlock(&GlobalMid_Lock);
 	}
 
-	rc = sync_mid_result(midQ, ses->server);
+	rc = cifs_sync_mid_result(midQ, ses->server);
 	if (rc != 0) {
 		atomic_dec(&ses->server->inFlight);
 		wake_up(&ses->server->request_q);
 		return rc;
 	}
 
-	receive_len = be32_to_cpu(midQ->resp_buf->smb_buf_length);
-
-	if (receive_len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) {
-		cERROR(1, "Frame too large received.  Length: %d  Xid: %d",
-			receive_len, xid);
+	if (!midQ->resp_buf || !out_buf ||
+	    midQ->midState != MID_RESPONSE_RECEIVED) {
 		rc = -EIO;
+		cERROR(1, "Bad MID state?");
 		goto out;
 	}
 
-	/* rcvd frame is ok */
-
-	if (midQ->resp_buf && out_buf
-	    && (midQ->midState == MID_RESPONSE_RECEIVED)) {
-		out_buf->smb_buf_length = cpu_to_be32(receive_len);
-		memcpy((char *)out_buf + 4,
-		       (char *)midQ->resp_buf + 4,
-		       receive_len);
-
-		dump_smb(out_buf, 92);
-		/* convert the length into a more usable form */
-		if ((receive_len > 24) &&
-		    (ses->server->secMode & (SECMODE_SIGN_REQUIRED |
-					     SECMODE_SIGN_ENABLED))) {
-			rc = cifs_verify_signature(out_buf,
-						ses->server,
-						midQ->sequence_number+1);
-			if (rc) {
-				cERROR(1, "Unexpected SMB signature");
-				/* BB FIXME add code to kill session */
-			}
-		}
-
-		*pbytes_returned = be32_to_cpu(out_buf->smb_buf_length);
-
-		/* BB special case reconnect tid and uid here? */
-		rc = map_smb_to_linux_error(out_buf, 0 /* no log */ );
-	} else {
-		rc = -EIO;
-		cERROR(1, "Bad MID state?");
-	}
-
+	*pbytes_returned = be32_to_cpu(midQ->resp_buf->smb_buf_length);
+	memcpy(out_buf, midQ->resp_buf, *pbytes_returned + 4);
+	rc = cifs_check_receive(midQ, ses->server, 0);
 out:
 	delete_mid(midQ);
 	atomic_dec(&ses->server->inFlight);
···
    blocking lock to return. */
 
 static int
-send_lock_cancel(const unsigned int xid, struct cifsTconInfo *tcon,
+send_lock_cancel(const unsigned int xid, struct cifs_tcon *tcon,
 			struct smb_hdr *in_buf,
 			struct smb_hdr *out_buf)
 {
 	int bytes_returned;
-	struct cifsSesInfo *ses = tcon->ses;
+	struct cifs_ses *ses = tcon->ses;
 	LOCK_REQ *pSMB = (LOCK_REQ *)in_buf;
 
 	/* We just modify the current in_buf to change
···
 }
 
 int
-SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
+SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *tcon,
 	    struct smb_hdr *in_buf, struct smb_hdr *out_buf,
 	    int *pbytes_returned)
 {
 	int rc = 0;
 	int rstart = 0;
-	unsigned int receive_len;
 	struct mid_q_entry *midQ;
-	struct cifsSesInfo *ses;
+	struct cifs_ses *ses;
 
 	if (tcon == NULL || tcon->ses == NULL) {
 		cERROR(1, "Null smb session");
···
 		rstart = 1;
 	}
 
-	rc = sync_mid_result(midQ, ses->server);
+	rc = cifs_sync_mid_result(midQ, ses->server);
 	if (rc != 0)
 		return rc;
 
-	receive_len = be32_to_cpu(midQ->resp_buf->smb_buf_length);
-	if (receive_len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) {
-		cERROR(1, "Frame too large received.  Length: %d  Xid: %d",
-			receive_len, xid);
-		rc = -EIO;
-		goto out;
-	}
-
 	/* rcvd frame is ok */
-
-	if ((out_buf == NULL) || (midQ->midState != MID_RESPONSE_RECEIVED)) {
+	if (out_buf == NULL || midQ->midState != MID_RESPONSE_RECEIVED) {
 		rc = -EIO;
 		cERROR(1, "Bad MID state?");
 		goto out;
 	}
 
-	out_buf->smb_buf_length = cpu_to_be32(receive_len);
-	memcpy((char *)out_buf + 4,
-	       (char *)midQ->resp_buf + 4,
-	       receive_len);
-
-	dump_smb(out_buf, 92);
-	/* convert the length into a more usable form */
-	if ((receive_len > 24) &&
-	    (ses->server->secMode & (SECMODE_SIGN_REQUIRED |
-				     SECMODE_SIGN_ENABLED))) {
-		rc = cifs_verify_signature(out_buf,
-					   ses->server,
-					   midQ->sequence_number+1);
-		if (rc) {
-			cERROR(1, "Unexpected SMB signature");
-			/* BB FIXME add code to kill session */
-		}
-	}
-
-	*pbytes_returned = be32_to_cpu(out_buf->smb_buf_length);
-
-	/* BB special case reconnect tid and uid here? */
-	rc = map_smb_to_linux_error(out_buf, 0 /* no log */ );
-
+	*pbytes_returned = be32_to_cpu(midQ->resp_buf->smb_buf_length);
+	memcpy(out_buf, midQ->resp_buf, *pbytes_returned + 4);
+	rc = cifs_check_receive(midQ, ses->server, 0);
 out:
 	delete_mid(midQ);
 	if (rstart && rc == -EACCES)

fs/cifs/xattr.c

···
 	int xid;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct super_block *sb;
 	char *full_path = NULL;
 
···
 	int xid;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct super_block *sb;
 	char *full_path;
 	struct cifs_ntsd *pacl;
···
 	int xid;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct super_block *sb;
 	char *full_path;
 
···
 	int xid;
 	struct cifs_sb_info *cifs_sb;
 	struct tcon_link *tlink;
-	struct cifsTconInfo *pTcon;
+	struct cifs_tcon *pTcon;
 	struct super_block *sb;
 	char *full_path;