Merge branch 'for-3.1' of git://linux-nfs.org/~bfields/linux

* 'for-3.1' of git://linux-nfs.org/~bfields/linux:
nfsd: don't break lease on CLAIM_DELEGATE_CUR
locks: rename lock-manager ops
nfsd4: update nfsv4.1 implementation notes
nfsd: turn on reply cache for NFSv4
nfsd4: call nfsd4_release_compoundargs from pc_release
nfsd41: Deny new lock before RECLAIM_COMPLETE done
fs: locks: remove init_once
nfsd41: check the size of request
nfsd41: error out when client sets maxreq_sz or maxresp_sz too small
nfsd4: fix file leak on open_downgrade
nfsd4: remember to put RW access on stateid destruction
NFSD: Added TEST_STATEID operation
NFSD: added FREE_STATEID operation
svcrpc: fix list-corrupting race on nfsd shutdown
rpc: allow autoloading of gss mechanisms
svcauth_unix.c: quiet sparse noise
svcsock.c: include sunrpc.h to quiet sparse noise
nfsd: Remove deprecated nfsctl system call and related code.
NFSD: allow OP_DESTROY_CLIENTID to be only op in COMPOUND

Fix up trivial conflicts in Documentation/feature-removal-schedule.txt

Documentation/feature-removal-schedule.txt

···
 
 ----------------------------
 
-What:   access to nfsd auth cache through sys_nfsservctl or '.' files
-        in the 'nfsd' filesystem.
-When:   3.0
-Why:    This is a legacy interface which have been replaced by a more
-        dynamic cache.  Continuing to maintain this interface is an
-        unnecessary burden.
-Who:    NeilBrown <[e-mail]>
-
-----------------------------
-
 What:	Legacy, non-standard chassis intrusion detection interface.
 When:	June 2011
 Why:	The adm9240, w83792d and w83793 hardware monitoring drivers have

Documentation/filesystems/Locking

···
 
 ----------------------- lock_manager_operations ---------------------------
 prototypes:
-	int (*fl_compare_owner)(struct file_lock *, struct file_lock *);
-	void (*fl_notify)(struct file_lock *);  /* unblock callback */
-	int (*fl_grant)(struct file_lock *, struct file_lock *, int);
-	void (*fl_release_private)(struct file_lock *);
-	void (*fl_break)(struct file_lock *); /* break_lease callback */
-	int (*fl_change)(struct file_lock **, int);
+	int (*lm_compare_owner)(struct file_lock *, struct file_lock *);
+	void (*lm_notify)(struct file_lock *);  /* unblock callback */
+	int (*lm_grant)(struct file_lock *, struct file_lock *, int);
+	void (*lm_release_private)(struct file_lock *);
+	void (*lm_break)(struct file_lock *); /* break_lease callback */
+	int (*lm_change)(struct file_lock **, int);
 
 locking rules:
 			file_lock_lock	may block
-fl_compare_owner:	yes		no
-fl_notify:		yes		no
-fl_grant:		no		no
-fl_release_private:	maybe		no
-fl_break:		yes		no
-fl_change		yes		no
+lm_compare_owner:	yes		no
+lm_notify:		yes		no
+lm_grant:		no		no
+lm_release_private:	maybe		no
+lm_break:		yes		no
+lm_change		yes		no
 
 --------------------------- buffer_head -----------------------------------
 prototypes:

Documentation/filesystems/nfs/nfs41-server.txt

···
 	  from a linux client are possible, but we aren't really
 	  conformant with the spec (for example, we don't use kerberos
 	  on the backchannel correctly).
-	- no trunking support: no clients currently take advantage of
-	  trunking, but this is a mandatory feature, and its use is
-	  recommended to clients in a number of places.  (E.g. to ensure
-	  timely renewal in case an existing connection's retry timeouts
-	  have gotten too long; see section 8.3 of the RFC.)
-	  Therefore, lack of this feature may cause future clients to
-	  fail.
 	- Incomplete backchannel support: incomplete backchannel gss
 	  support and no support for BACKCHANNEL_CTL mean that
 	  callbacks (hence delegations and layouts) may not be
 	  available and clients confused by the incomplete
 	  implementation may fail.
-	- Server reboot recovery is unsupported; if the server reboots,
-	  clients may fail.
 	- We do not support SSV, which provides security for shared
 	  client-server state (thus preventing unauthorized tampering
 	  with locks and opens, for example).  It is mandatory for
 	  servers to support this, though no clients use it yet.
 	- Mandatory operations which we do not support, such as
-	  DESTROY_CLIENTID, FREE_STATEID, SECINFO_NO_NAME, and
-	  TEST_STATEID, are not currently used by clients, but will be
+	  DESTROY_CLIENTID, are not currently used by clients, but will be
 	  (and the spec recommends their uses in common cases), and
 	  clients should not be expected to know how to recover from the
 	  case where they are not supported.  This will eventually cause
···
 implementation:
 
 	- Incomplete delegation enforcement: if a file is renamed or
-	  unlinked, a client holding a delegation may continue to
-	  indefinitely allow opens of the file under the old name.
+	  unlinked by a local process, a client holding a delegation may
+	  continue to indefinitely allow opens of the file under the old
+	  name.
 
 The table below, taken from the NFSv4.1 document, lists
 the operations that are mandatory to implement (REQ), optional
···
    +----------------------+------------+--------------+----------------+
    | ACCESS               | REQ        |              | Section 18.1   |
 NS | BACKCHANNEL_CTL      | REQ        |              | Section 18.33  |
-NS | BIND_CONN_TO_SESSION | REQ        |              | Section 18.34  |
+I  | BIND_CONN_TO_SESSION | REQ        |              | Section 18.34  |
    | CLOSE                | REQ        |              | Section 18.2   |
    | COMMIT               | REQ        |              | Section 18.3   |
    | CREATE               | REQ        |              | Section 18.4   |
···
 NS | DESTROY_CLIENTID     | REQ        |              | Section 18.50  |
 I  | DESTROY_SESSION      | REQ        |              | Section 18.37  |
 I  | EXCHANGE_ID          | REQ        |              | Section 18.35  |
-NS | FREE_STATEID         | REQ        |              | Section 18.38  |
+I  | FREE_STATEID         | REQ        |              | Section 18.38  |
    | GETATTR              | REQ        |              | Section 18.7   |
 P  | GETDEVICEINFO        | OPT        | pNFS (REQ)   | Section 18.40  |
 P  | GETDEVICELIST        | OPT        | pNFS (OPT)   | Section 18.41  |
···
    | RESTOREFH            | REQ        |              | Section 18.27  |
    | SAVEFH               | REQ        |              | Section 18.28  |
    | SECINFO              | REQ        |              | Section 18.29  |
-NS | SECINFO_NO_NAME      | REC        | pNFS files   | Section 18.45, |
+I  | SECINFO_NO_NAME      | REC        | pNFS files   | Section 18.45, |
    |                      |            | layout (REQ) | Section 13.12  |
 I  | SEQUENCE             | REQ        |              | Section 18.46  |
    | SETATTR              | REQ        |              | Section 18.30  |
    | SETCLIENTID          | MNI        |              | N/A            |
    | SETCLIENTID_CONFIRM  | MNI        |              | N/A            |
 NS | SET_SSV              | REQ        |              | Section 18.47  |
-NS | TEST_STATEID         | REQ        |              | Section 18.48  |
+I  | TEST_STATEID         | REQ        |              | Section 18.48  |
    | VERIFY               | REQ        |              | Section 18.31  |
 NS*| WANT_DELEGATION      | OPT        | FDELG (OPT)  | Section 18.49  |
    | WRITE                | REQ        |              | Section 18.32  |
···
 SEQUENCE:
 * no support for dynamic slot table renegotiation (optional)
 
-nfsv4.1 COMPOUND rules:
-The following cases aren't supported yet:
-* Enforcing of NFS4ERR_NOT_ONLY_OP for: BIND_CONN_TO_SESSION, CREATE_SESSION,
-  DESTROY_CLIENTID, DESTROY_SESSION, EXCHANGE_ID.
-* DESTROY_SESSION MUST be the final operation in the COMPOUND request.
-
 Nonstandard compound limitations:
 * No support for a sessions fore channel RPC compound that requires both a
   ca_maxrequestsize request and a ca_maxresponsesize reply, so we may
···
   negotiation.
 * No more than one IO operation (read, write, readdir) allowed per
   compound.
+
+See also http://wiki.linux-nfs.org/wiki/index.php/Server_4.0_and_4.1_issues.

arch/tile/configs/tilegx_defconfig

···
 CONFIG_NFS_USE_KERNEL_DNS=y
 # CONFIG_NFS_USE_NEW_IDMAPPER is not set
 CONFIG_NFSD=m
-CONFIG_NFSD_DEPRECATED=y
 CONFIG_NFSD_V2_ACL=y
 CONFIG_NFSD_V3=y
 CONFIG_NFSD_V3_ACL=y

fs/Makefile

···
 obj-$(CONFIG_AIO)               += aio.o
 obj-$(CONFIG_FILE_LOCKING)      += locks.o
 obj-$(CONFIG_COMPAT)		+= compat.o compat_ioctl.o
-obj-$(CONFIG_NFSD_DEPRECATED)	+= nfsctl.o
 obj-$(CONFIG_BINFMT_AOUT)	+= binfmt_aout.o
 obj-$(CONFIG_BINFMT_EM86)	+= binfmt_em86.o
 obj-$(CONFIG_BINFMT_MISC)	+= binfmt_misc.o

fs/compat.c

···
 }
 #endif /* HAVE_SET_RESTORE_SIGMASK */
 
-#if (defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)) && !defined(CONFIG_NFSD_DEPRECATED)
-/* Stuff for NFS server syscalls... */
-struct compat_nfsctl_svc {
-	u16			svc32_port;
-	s32			svc32_nthreads;
-};
-
-struct compat_nfsctl_client {
-	s8			cl32_ident[NFSCLNT_IDMAX+1];
-	s32			cl32_naddr;
-	struct in_addr		cl32_addrlist[NFSCLNT_ADDRMAX];
-	s32			cl32_fhkeytype;
-	s32			cl32_fhkeylen;
-	u8			cl32_fhkey[NFSCLNT_KEYMAX];
-};
-
-struct compat_nfsctl_export {
-	char		ex32_client[NFSCLNT_IDMAX+1];
-	char		ex32_path[NFS_MAXPATHLEN+1];
-	compat_dev_t	ex32_dev;
-	compat_ino_t	ex32_ino;
-	compat_int_t	ex32_flags;
-	__compat_uid_t	ex32_anon_uid;
-	__compat_gid_t	ex32_anon_gid;
-};
-
-struct compat_nfsctl_fdparm {
-	struct sockaddr		gd32_addr;
-	s8			gd32_path[NFS_MAXPATHLEN+1];
-	compat_int_t		gd32_version;
-};
-
-struct compat_nfsctl_fsparm {
-	struct sockaddr		gd32_addr;
-	s8			gd32_path[NFS_MAXPATHLEN+1];
-	compat_int_t		gd32_maxlen;
-};
-
-struct compat_nfsctl_arg {
-	compat_int_t		ca32_version;	/* safeguard */
-	union {
-		struct compat_nfsctl_svc	u32_svc;
-		struct compat_nfsctl_client	u32_client;
-		struct compat_nfsctl_export	u32_export;
-		struct compat_nfsctl_fdparm	u32_getfd;
-		struct compat_nfsctl_fsparm	u32_getfs;
-	} u;
-#define ca32_svc	u.u32_svc
-#define ca32_client	u.u32_client
-#define ca32_export	u.u32_export
-#define ca32_getfd	u.u32_getfd
-#define ca32_getfs	u.u32_getfs
-};
-
-union compat_nfsctl_res {
-	__u8			cr32_getfh[NFS_FHSIZE];
-	struct knfsd_fh		cr32_getfs;
-};
-
-static int compat_nfs_svc_trans(struct nfsctl_arg *karg,
-				struct compat_nfsctl_arg __user *arg)
-{
-	if (!access_ok(VERIFY_READ, &arg->ca32_svc, sizeof(arg->ca32_svc)) ||
-		get_user(karg->ca_version, &arg->ca32_version) ||
-		__get_user(karg->ca_svc.svc_port, &arg->ca32_svc.svc32_port) ||
-		__get_user(karg->ca_svc.svc_nthreads,
-				&arg->ca32_svc.svc32_nthreads))
-		return -EFAULT;
-	return 0;
-}
-
-static int compat_nfs_clnt_trans(struct nfsctl_arg *karg,
-				struct compat_nfsctl_arg __user *arg)
-{
-	if (!access_ok(VERIFY_READ, &arg->ca32_client,
-			sizeof(arg->ca32_client)) ||
-		get_user(karg->ca_version, &arg->ca32_version) ||
-		__copy_from_user(&karg->ca_client.cl_ident[0],
-				&arg->ca32_client.cl32_ident[0],
-				NFSCLNT_IDMAX) ||
-		__get_user(karg->ca_client.cl_naddr,
-				&arg->ca32_client.cl32_naddr) ||
-		__copy_from_user(&karg->ca_client.cl_addrlist[0],
-				&arg->ca32_client.cl32_addrlist[0],
-				(sizeof(struct in_addr) * NFSCLNT_ADDRMAX)) ||
-		__get_user(karg->ca_client.cl_fhkeytype,
-				&arg->ca32_client.cl32_fhkeytype) ||
-		__get_user(karg->ca_client.cl_fhkeylen,
-				&arg->ca32_client.cl32_fhkeylen) ||
-		__copy_from_user(&karg->ca_client.cl_fhkey[0],
-				&arg->ca32_client.cl32_fhkey[0],
-				NFSCLNT_KEYMAX))
-		return -EFAULT;
-
-	return 0;
-}
-
-static int compat_nfs_exp_trans(struct nfsctl_arg *karg,
-				struct compat_nfsctl_arg __user *arg)
-{
-	if (!access_ok(VERIFY_READ, &arg->ca32_export,
-				sizeof(arg->ca32_export)) ||
-		get_user(karg->ca_version, &arg->ca32_version) ||
-		__copy_from_user(&karg->ca_export.ex_client[0],
-				&arg->ca32_export.ex32_client[0],
-				NFSCLNT_IDMAX) ||
-		__copy_from_user(&karg->ca_export.ex_path[0],
-				&arg->ca32_export.ex32_path[0],
-				NFS_MAXPATHLEN) ||
-		__get_user(karg->ca_export.ex_dev,
-				&arg->ca32_export.ex32_dev) ||
-		__get_user(karg->ca_export.ex_ino,
-				&arg->ca32_export.ex32_ino) ||
-		__get_user(karg->ca_export.ex_flags,
-				&arg->ca32_export.ex32_flags) ||
-		__get_user(karg->ca_export.ex_anon_uid,
-				&arg->ca32_export.ex32_anon_uid) ||
-		__get_user(karg->ca_export.ex_anon_gid,
-				&arg->ca32_export.ex32_anon_gid))
-		return -EFAULT;
-	SET_UID(karg->ca_export.ex_anon_uid, karg->ca_export.ex_anon_uid);
-	SET_GID(karg->ca_export.ex_anon_gid, karg->ca_export.ex_anon_gid);
-
-	return 0;
-}
-
-static int compat_nfs_getfd_trans(struct nfsctl_arg *karg,
-				struct compat_nfsctl_arg __user *arg)
-{
-	if (!access_ok(VERIFY_READ, &arg->ca32_getfd,
-			sizeof(arg->ca32_getfd)) ||
-		get_user(karg->ca_version, &arg->ca32_version) ||
-		__copy_from_user(&karg->ca_getfd.gd_addr,
-				&arg->ca32_getfd.gd32_addr,
-				(sizeof(struct sockaddr))) ||
-		__copy_from_user(&karg->ca_getfd.gd_path,
-				&arg->ca32_getfd.gd32_path,
-				(NFS_MAXPATHLEN+1)) ||
-		__get_user(karg->ca_getfd.gd_version,
-				&arg->ca32_getfd.gd32_version))
-		return -EFAULT;
-
-	return 0;
-}
-
-static int compat_nfs_getfs_trans(struct nfsctl_arg *karg,
-				struct compat_nfsctl_arg __user *arg)
-{
-	if (!access_ok(VERIFY_READ,&arg->ca32_getfs,sizeof(arg->ca32_getfs)) ||
-		get_user(karg->ca_version, &arg->ca32_version) ||
-		__copy_from_user(&karg->ca_getfs.gd_addr,
-				&arg->ca32_getfs.gd32_addr,
-				(sizeof(struct sockaddr))) ||
-		__copy_from_user(&karg->ca_getfs.gd_path,
-				&arg->ca32_getfs.gd32_path,
-				(NFS_MAXPATHLEN+1)) ||
-		__get_user(karg->ca_getfs.gd_maxlen,
-				&arg->ca32_getfs.gd32_maxlen))
-		return -EFAULT;
-
-	return 0;
-}
-
-/* This really doesn't need translations, we are only passing
- * back a union which contains opaque nfs file handle data.
- */
-static int compat_nfs_getfh_res_trans(union nfsctl_res *kres,
-				union compat_nfsctl_res __user *res)
-{
-	int err;
-
-	err = copy_to_user(res, kres, sizeof(*res));
-
-	return (err) ? -EFAULT : 0;
-}
-
-asmlinkage long compat_sys_nfsservctl(int cmd,
-				struct compat_nfsctl_arg __user *arg,
-				union compat_nfsctl_res __user *res)
-{
-	struct nfsctl_arg *karg;
-	union nfsctl_res *kres;
-	mm_segment_t oldfs;
-	int err;
-
-	karg = kmalloc(sizeof(*karg), GFP_USER);
-	kres = kmalloc(sizeof(*kres), GFP_USER);
-	if(!karg || !kres) {
-		err = -ENOMEM;
-		goto done;
-	}
-
-	switch(cmd) {
-	case NFSCTL_SVC:
-		err = compat_nfs_svc_trans(karg, arg);
-		break;
-
-	case NFSCTL_ADDCLIENT:
-		err = compat_nfs_clnt_trans(karg, arg);
-		break;
-
-	case NFSCTL_DELCLIENT:
-		err = compat_nfs_clnt_trans(karg, arg);
-		break;
-
-	case NFSCTL_EXPORT:
-	case NFSCTL_UNEXPORT:
-		err = compat_nfs_exp_trans(karg, arg);
-		break;
-
-	case NFSCTL_GETFD:
-		err = compat_nfs_getfd_trans(karg, arg);
-		break;
-
-	case NFSCTL_GETFS:
-		err = compat_nfs_getfs_trans(karg, arg);
-		break;
-
-	default:
-		err = -EINVAL;
-		break;
-	}
-
-	if (err)
-		goto done;
-
-	oldfs = get_fs();
-	set_fs(KERNEL_DS);
-	/* The __user pointer casts are valid because of the set_fs() */
-	err = sys_nfsservctl(cmd, (void __user *) karg, (void __user *) kres);
-	set_fs(oldfs);
-
-	if (err)
-		goto done;
-
-	if((cmd == NFSCTL_GETFD) ||
-	   (cmd == NFSCTL_GETFS))
-		err = compat_nfs_getfh_res_trans(kres, res);
-
-done:
-	kfree(karg);
-	kfree(kres);
-	return err;
-}
-#else /* !NFSD */
 long asmlinkage compat_sys_nfsservctl(int cmd, void *notused, void *notused2)
 {
 	return sys_ni_syscall();
 }
-#endif
 
 #ifdef CONFIG_EPOLL
 

fs/dlm/plock.c

···
 	op->info.number		= number;
 	op->info.start		= 0;
 	op->info.end		= OFFSET_MAX;
-	if (fl->fl_lmops && fl->fl_lmops->fl_grant)
+	if (fl->fl_lmops && fl->fl_lmops->lm_grant)
 		op->info.owner	= (__u64) fl->fl_pid;
 	else
 		op->info.owner	= (__u64)(long) fl->fl_owner;
···
 	op->info.number		= number;
 	op->info.start		= fl->fl_start;
 	op->info.end		= fl->fl_end;
-	if (fl->fl_lmops && fl->fl_lmops->fl_grant) {
+	if (fl->fl_lmops && fl->fl_lmops->lm_grant) {
 		/* fl_owner is lockd which doesn't distinguish
 		   processes on the nfs client */
 		op->info.owner	= (__u64) fl->fl_pid;
-		xop->callback	= fl->fl_lmops->fl_grant;
+		xop->callback	= fl->fl_lmops->lm_grant;
 		locks_init_lock(&xop->flc);
 		locks_copy_lock(&xop->flc, fl);
 		xop->fl		= fl;
···
 	op->info.number		= number;
 	op->info.start		= fl->fl_start;
 	op->info.end		= fl->fl_end;
-	if (fl->fl_lmops && fl->fl_lmops->fl_grant)
+	if (fl->fl_lmops && fl->fl_lmops->lm_grant)
 		op->info.owner	= (__u64) fl->fl_pid;
 	else
 		op->info.owner	= (__u64)(long) fl->fl_owner;
···
 	op->info.number		= number;
 	op->info.start		= fl->fl_start;
 	op->info.end		= fl->fl_end;
-	if (fl->fl_lmops && fl->fl_lmops->fl_grant)
+	if (fl->fl_lmops && fl->fl_lmops->lm_grant)
 		op->info.owner	= (__u64) fl->fl_pid;
 	else
 		op->info.owner	= (__u64)(long) fl->fl_owner;

fs/fuse/file.c

···
 	pid_t pid = fl->fl_type != F_UNLCK ? current->tgid : 0;
 	int err;
 
-	if (fl->fl_lmops && fl->fl_lmops->fl_grant) {
+	if (fl->fl_lmops && fl->fl_lmops->lm_grant) {
 		/* NLM needs asynchronous locks, which we don't support yet */
 		return -ENOLCK;
 	}

fs/lockd/svclock.c

···
 
 /*
  * This is a callback from the filesystem for VFS file lock requests.
- * It will be used if fl_grant is defined and the filesystem can not
+ * It will be used if lm_grant is defined and the filesystem can not
  * respond to the request immediately.
  * For GETLK request it will copy the reply to the nlm_block.
  * For SETLK or SETLKW request it will get the local posix lock.
···
 }
 
 const struct lock_manager_operations nlmsvc_lock_operations = {
-	.fl_compare_owner = nlmsvc_same_owner,
-	.fl_notify = nlmsvc_notify_blocked,
-	.fl_grant = nlmsvc_grant_deferred,
+	.lm_compare_owner = nlmsvc_same_owner,
+	.lm_notify = nlmsvc_notify_blocked,
+	.lm_grant = nlmsvc_grant_deferred,
 };
 
 /*

fs/locks.c

···
 
 static struct kmem_cache *filelock_cache __read_mostly;
 
-static void locks_init_lock_always(struct file_lock *fl)
+static void locks_init_lock_heads(struct file_lock *fl)
 {
-	fl->fl_next = NULL;
-	fl->fl_fasync = NULL;
-	fl->fl_owner = NULL;
-	fl->fl_pid = 0;
-	fl->fl_nspid = NULL;
-	fl->fl_file = NULL;
-	fl->fl_flags = 0;
-	fl->fl_type = 0;
-	fl->fl_start = fl->fl_end = 0;
+	INIT_LIST_HEAD(&fl->fl_link);
+	INIT_LIST_HEAD(&fl->fl_block);
+	init_waitqueue_head(&fl->fl_wait);
 }
 
 /* Allocate an empty lock structure. */
 struct file_lock *locks_alloc_lock(void)
 {
-	struct file_lock *fl = kmem_cache_alloc(filelock_cache, GFP_KERNEL);
+	struct file_lock *fl = kmem_cache_zalloc(filelock_cache, GFP_KERNEL);
 
 	if (fl)
-		locks_init_lock_always(fl);
+		locks_init_lock_heads(fl);
 
 	return fl;
 }
···
 		fl->fl_ops = NULL;
 	}
 	if (fl->fl_lmops) {
-		if (fl->fl_lmops->fl_release_private)
-			fl->fl_lmops->fl_release_private(fl);
+		if (fl->fl_lmops->lm_release_private)
+			fl->fl_lmops->lm_release_private(fl);
 		fl->fl_lmops = NULL;
 	}
 
···
 
 void locks_init_lock(struct file_lock *fl)
 {
-	INIT_LIST_HEAD(&fl->fl_link);
-	INIT_LIST_HEAD(&fl->fl_block);
-	init_waitqueue_head(&fl->fl_wait);
-	fl->fl_ops = NULL;
-	fl->fl_lmops = NULL;
-	locks_init_lock_always(fl);
+	memset(fl, 0, sizeof(struct file_lock));
+	locks_init_lock_heads(fl);
 }
 
 EXPORT_SYMBOL(locks_init_lock);
-
-/*
- * Initialises the fields of the file lock which are invariant for
- * free file_locks.
- */
-static void init_once(void *foo)
-{
-	struct file_lock *lock = (struct file_lock *) foo;
-
-	locks_init_lock(lock);
-}
 
 static void locks_copy_private(struct file_lock *new, struct file_lock *fl)
 {
···
 }
 
 static const struct lock_manager_operations lease_manager_ops = {
-	.fl_break = lease_break_callback,
-	.fl_release_private = lease_release_private_callback,
-	.fl_change = lease_modify,
+	.lm_break = lease_break_callback,
+	.lm_release_private = lease_release_private_callback,
+	.lm_change = lease_modify,
 };
 
 /*
···
  */
 static int posix_same_owner(struct file_lock *fl1, struct file_lock *fl2)
 {
-	if (fl1->fl_lmops && fl1->fl_lmops->fl_compare_owner)
+	if (fl1->fl_lmops && fl1->fl_lmops->lm_compare_owner)
 		return fl2->fl_lmops == fl1->fl_lmops &&
-			fl1->fl_lmops->fl_compare_owner(fl1, fl2);
+			fl1->fl_lmops->lm_compare_owner(fl1, fl2);
 	return fl1->fl_owner == fl2->fl_owner;
 }
 
···
 		waiter = list_first_entry(&blocker->fl_block,
 				struct file_lock, fl_block);
 		__locks_delete_block(waiter);
-		if (waiter->fl_lmops && waiter->fl_lmops->fl_notify)
-			waiter->fl_lmops->fl_notify(waiter);
+		if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
+			waiter->fl_lmops->lm_notify(waiter);
 		else
 			wake_up(&waiter->fl_wait);
 	}
···
 			fl->fl_type = future;
 			fl->fl_break_time = break_time;
 			/* lease must have lmops break callback */
-			fl->fl_lmops->fl_break(fl);
+			fl->fl_lmops->lm_break(fl);
 		}
 	}
 
···
  *	@arg: type of lease to obtain
  *	@flp: input - file_lock to use, output - file_lock inserted
  *
- *	The (input) flp->fl_lmops->fl_break function is required
+ *	The (input) flp->fl_lmops->lm_break function is required
  *	by break_lease().
  *
  *	Called with file_lock_lock held.
···
 
 	time_out_leases(inode);
 
-	BUG_ON(!(*flp)->fl_lmops->fl_break);
+	BUG_ON(!(*flp)->fl_lmops->lm_break);
 
 	if (arg != F_UNLCK) {
 		error = -EAGAIN;
···
 		goto out;
 
 	if (my_before != NULL) {
-		error = lease->fl_lmops->fl_change(my_before, arg);
+		error = lease->fl_lmops->lm_change(my_before, arg);
 		if (!error)
 			*flp = *my_before;
 		goto out;
···
  *	@lease: file_lock to use
  *
  *	Call this to establish a lease on the file.
- *	The (*lease)->fl_lmops->fl_break operation must be set; if not,
+ *	The (*lease)->fl_lmops->lm_break operation must be set; if not,
  *	break_lease will oops!
  *
  *	This will call the filesystem's setlease file method, if
···
  * To avoid blocking kernel daemons, such as lockd, that need to acquire POSIX
  * locks, the ->lock() interface may return asynchronously, before the lock has
  * been granted or denied by the underlying filesystem, if (and only if)
- * fl_grant is set. Callers expecting ->lock() to return asynchronously
+ * lm_grant is set. Callers expecting ->lock() to return asynchronously
  * will only use F_SETLK, not F_SETLKW; they will set FL_SLEEP if (and only if)
  * the request is for a blocking lock. When ->lock() does return asynchronously,
- * it must return FILE_LOCK_DEFERRED, and call ->fl_grant() when the lock
+ * it must return FILE_LOCK_DEFERRED, and call ->lm_grant() when the lock
  * request completes.
  * If the request is for non-blocking lock the file system should return
  * FILE_LOCK_DEFERRED then try to get the lock and call the callback routine
···
  * grants a lock so the VFS can find out which locks are locally held and do
  * the correct lock cleanup when required.
  * The underlying filesystem must not drop the kernel lock or call
- * ->fl_grant() before returning to the caller with a FILE_LOCK_DEFERRED
+ * ->lm_grant() before returning to the caller with a FILE_LOCK_DEFERRED
  * return code.
  */
 int vfs_lock_file(struct file *filp, unsigned int cmd, struct file_lock *fl, struct file_lock *conf)
···
 static int __init filelock_init(void)
 {
 	filelock_cache = kmem_cache_create("file_lock_cache",
-			sizeof(struct file_lock), 0, SLAB_PANIC,
-			init_once);
+			sizeof(struct file_lock), 0, SLAB_PANIC, NULL);
+
 	return 0;
 }
 

fs/nfsctl.c

···
-/*
- *	fs/nfsctl.c
- *
- *	This should eventually move to userland.
- *
- */
-#include <linux/types.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/nfsd/syscall.h>
-#include <linux/cred.h>
-#include <linux/sched.h>
-#include <linux/linkage.h>
-#include <linux/namei.h>
-#include <linux/mount.h>
-#include <linux/syscalls.h>
-#include <asm/uaccess.h>
-
-/*
- * open a file on nfsd fs
- */
-
-static struct file *do_open(char *name, int flags)
-{
-	struct vfsmount *mnt;
-	struct file *file;
-
-	mnt = do_kern_mount("nfsd", 0, "nfsd", NULL);
-	if (IS_ERR(mnt))
-		return (struct file *)mnt;
-
-	file = file_open_root(mnt->mnt_root, mnt, name, flags);
-
-	mntput(mnt);	/* drop do_kern_mount reference */
-	return file;
-}
-
-static struct {
-	char *name; int wsize; int rsize;
-} map[] = {
-	[NFSCTL_SVC] = {
-		.name	= ".svc",
-		.wsize	= sizeof(struct nfsctl_svc)
-	},
-	[NFSCTL_ADDCLIENT] = {
-		.name	= ".add",
-		.wsize	= sizeof(struct nfsctl_client)
-	},
-	[NFSCTL_DELCLIENT] = {
-		.name	= ".del",
-		.wsize	= sizeof(struct nfsctl_client)
-	},
-	[NFSCTL_EXPORT] = {
-		.name	= ".export",
-		.wsize	= sizeof(struct nfsctl_export)
-	},
-	[NFSCTL_UNEXPORT] = {
-		.name	= ".unexport",
-		.wsize	= sizeof(struct nfsctl_export)
-	},
-	[NFSCTL_GETFD] = {
-		.name	= ".getfd",
-		.wsize	= sizeof(struct nfsctl_fdparm),
-		.rsize	= NFS_FHSIZE
-	},
-	[NFSCTL_GETFS] = {
-		.name	= ".getfs",
-		.wsize	= sizeof(struct nfsctl_fsparm),
-		.rsize	= sizeof(struct knfsd_fh)
-	},
-};
-
-SYSCALL_DEFINE3(nfsservctl, int, cmd, struct nfsctl_arg __user *, arg,
-		void __user *, res)
-{
-	struct file *file;
-	void __user *p = &arg->u;
-	int version;
-	int err;
-
-	if (copy_from_user(&version, &arg->ca_version, sizeof(int)))
-		return -EFAULT;
-
-	if (version != NFSCTL_VERSION)
-		return -EINVAL;
-
-	if (cmd < 0 || cmd >= ARRAY_SIZE(map) || !map[cmd].name)
-		return -EINVAL;
-
-	file = do_open(map[cmd].name, map[cmd].rsize ? O_RDWR : O_WRONLY);	
-	if (IS_ERR(file))
-		return PTR_ERR(file);
-	err = file->f_op->write(file, p, map[cmd].wsize, &file->f_pos);
-	if (err >= 0 && map[cmd].rsize)
-		err = file->f_op->read(file, res, map[cmd].rsize, &file->f_pos);
-	if (err >= 0)
-		err = 0;
-	fput(file);
-	return err;
-}

fs/nfsd/Kconfig

···
 
 	  If unsure, say N.
 
-config NFSD_DEPRECATED
-	bool "Include support for deprecated syscall interface to NFSD"
-	depends on NFSD
-	default y
-	help
-	  The syscall interface to nfsd was obsoleted in 2.6.0 by a new
-	  filesystem based interface.  The old interface is due for removal
-	  in 2.6.40.  If you wish to remove the interface before then
-	  say N.
-
-	  In unsure, say Y.
-
 config NFSD_V2_ACL
 	bool
 	depends on NFSD

fs/nfsd/cache.h

···
 
 int	nfsd_reply_cache_init(void);
 void	nfsd_reply_cache_shutdown(void);
-int	nfsd_cache_lookup(struct svc_rqst *, int);
+int	nfsd_cache_lookup(struct svc_rqst *);
 void	nfsd_cache_update(struct svc_rqst *, int, __be32 *);
 
 #ifdef CONFIG_NFSD_V4

fs/nfsd/export.c

···
 	return ek;
 }
 
-#ifdef CONFIG_NFSD_DEPRECATED
-static int exp_set_key(svc_client *clp, int fsid_type, u32 *fsidv,
-		       struct svc_export *exp)
-{
-	struct svc_expkey key, *ek;
-
-	key.ek_client = clp;
-	key.ek_fsidtype = fsid_type;
-	memcpy(key.ek_fsid, fsidv, key_len(fsid_type));
-	key.ek_path = exp->ex_path;
-	key.h.expiry_time = NEVER;
-	key.h.flags = 0;
-
-	ek = svc_expkey_lookup(&key);
-	if (ek)
-		ek = svc_expkey_update(&key,ek);
-	if (ek) {
-		cache_put(&ek->h, &svc_expkey_cache);
-		return 0;
-	}
-	return -ENOMEM;
-}
-
-/*
- * Find the client's export entry matching xdev/xino.
- */
-static inline struct svc_expkey *
-exp_get_key(svc_client *clp, dev_t dev, ino_t ino)
-{
-	u32 fsidv[3];
-	
-	if (old_valid_dev(dev)) {
-		mk_fsid(FSID_DEV, fsidv, dev, ino, 0, NULL);
-		return exp_find_key(clp, FSID_DEV, fsidv, NULL);
-	}
-	mk_fsid(FSID_ENCODE_DEV, fsidv, dev, ino, 0, NULL);
-	return exp_find_key(clp, FSID_ENCODE_DEV, fsidv, NULL);
-}
-
-/*
- * Find the client's export entry matching fsid
- */
-static inline struct svc_expkey *
-exp_get_fsid_key(svc_client *clp, int fsid)
-{
-	u32 fsidv[2];
-
-	mk_fsid(FSID_NUM, fsidv, 0, 0, fsid, NULL);
-
-	return exp_find_key(clp, FSID_NUM, fsidv, NULL);
-}
-#endif
 
 static svc_export *exp_get_by_name(svc_client *clp, const struct path *path,
 				     struct cache_req *reqp)
···
 	return exp;
 }
 
-#ifdef CONFIG_NFSD_DEPRECATED
-/*
- * Hashtable locking. Write locks are placed only by user processes
- * wanting to modify export information.
- * Write locking only done in this file.  Read locking
- * needed externally.
- */
 
-static DECLARE_RWSEM(hash_sem);
-
-void
-exp_readlock(void)
-{
-	down_read(&hash_sem);
-}
-
-static inline void
-exp_writelock(void)
-{
-	down_write(&hash_sem);
-}
-
-void
-exp_readunlock(void)
-{
-	up_read(&hash_sem);
-}
-
-static inline void
-exp_writeunlock(void)
-{
-	up_write(&hash_sem);
-}
-#else
-
-/* hash_sem not needed once deprecated interface is removed */
-void exp_readlock(void) {}
-static inline void exp_writelock(void){}
-void exp_readunlock(void) {}
-static inline void exp_writeunlock(void){}
-
-#endif
-
-#ifdef CONFIG_NFSD_DEPRECATED
-static void		exp_do_unexport(svc_export *unexp);
-static int		exp_verify_string(char *cp, int max);
-
-static void exp_fsid_unhash(struct svc_export *exp)
-{
-	struct svc_expkey *ek;
-
-	if ((exp->ex_flags & NFSEXP_FSID) == 0)
-		return;
-
-	ek = exp_get_fsid_key(exp->ex_client, exp->ex_fsid);
-	if (!IS_ERR(ek)) {
-		sunrpc_invalidate(&ek->h, &svc_expkey_cache);
-		cache_put(&ek->h, &svc_expkey_cache);
-	}
-}
-
-static int exp_fsid_hash(svc_client *clp, struct svc_export *exp)
-{
-	u32 fsid[2];
- 
-	if ((exp->ex_flags & NFSEXP_FSID) == 0)
-		return 0;
-
-	mk_fsid(FSID_NUM, fsid, 0, 0, exp->ex_fsid, NULL);
-	return exp_set_key(clp, FSID_NUM, fsid, exp);
-}
-
-static int exp_hash(struct auth_domain *clp, struct svc_export *exp)
-{
-	u32 fsid[2];
-	struct inode *inode = exp->ex_path.dentry->d_inode;
-	dev_t dev = inode->i_sb->s_dev;
-
-	if (old_valid_dev(dev)) {
-		mk_fsid(FSID_DEV, fsid, dev, inode->i_ino, 0, NULL);
-		return exp_set_key(clp, FSID_DEV, fsid, exp);
-	}
-	mk_fsid(FSID_ENCODE_DEV, fsid, dev, inode->i_ino, 0, NULL);
-	return exp_set_key(clp, FSID_ENCODE_DEV, fsid, exp);
-}
-
-static void exp_unhash(struct svc_export *exp)
-{
-	struct svc_expkey *ek;
-	struct inode *inode = exp->ex_path.dentry->d_inode;
-
-	ek = exp_get_key(exp->ex_client, inode->i_sb->s_dev, inode->i_ino);
-	if (!IS_ERR(ek)) {
-		sunrpc_invalidate(&ek->h, &svc_expkey_cache);
-		cache_put(&ek->h, &svc_expkey_cache);
-	}
-}
-	
-/*
- * Export a file system.
- */
-int
-exp_export(struct nfsctl_export *nxp)
-{
-	svc_client	*clp;
-	struct svc_export	*exp = NULL;
-	struct svc_export	new;
-	struct svc_expkey	*fsid_key = NULL;
-	struct path path;
-	int		err;
-
-	/* Consistency check */
-	err = -EINVAL;
-	if (!exp_verify_string(nxp->ex_path, NFS_MAXPATHLEN) ||
-	    !exp_verify_string(nxp->ex_client, NFSCLNT_IDMAX))
-		goto out;
-
-	dprintk("exp_export called for %s:%s (%x/%ld fl %x).\n",
-			nxp->ex_client, nxp->ex_path,
-			(unsigned)nxp->ex_dev, (long)nxp->ex_ino,
-			nxp->ex_flags);
-
-	/* Try to lock the export table for update */
-	exp_writelock();
-
-	/* Look up client info */
-	if (!(clp = auth_domain_find(nxp->ex_client)))
-		goto out_unlock;
-
-
-	/* Look up the dentry */
-	err = kern_path(nxp->ex_path, 0, &path);
-	if (err)
-		goto out_put_clp;
-	err = -EINVAL;
-
-	exp = exp_get_by_name(clp, &path, NULL);
-
-	memset(&new, 0, sizeof(new));
-
-	/* must make sure there won't be an ex_fsid clash */
-	if ((nxp->ex_flags & NFSEXP_FSID) &&
-	    (!IS_ERR(fsid_key = exp_get_fsid_key(clp, nxp->ex_dev))) &&
-	    fsid_key->ek_path.mnt &&
-	    (fsid_key->ek_path.mnt != path.mnt ||
-	     fsid_key->ek_path.dentry != path.dentry))
-		goto finish;
-
-	if (!IS_ERR(exp)) {
-		/* just a flags/id/fsid update */
-
-		exp_fsid_unhash(exp);
-		exp->ex_flags    = nxp->ex_flags;
-		exp->ex_anon_uid = nxp->ex_anon_uid;
-		exp->ex_anon_gid = nxp->ex_anon_gid;
-		exp->ex_fsid     = nxp->ex_dev;
-
-		err = exp_fsid_hash(clp, exp);
-		goto finish;
-	}
-
-	err = check_export(path.dentry->d_inode, &nxp->ex_flags, NULL);
-	if (err) goto finish;
-
-	err = -ENOMEM;
-
-	dprintk("nfsd: creating export entry %p for client %p\n", exp, clp);
-
-	new.h.expiry_time = NEVER;
-	new.h.flags = 0;
-	new.ex_pathname = kstrdup(nxp->ex_path, GFP_KERNEL);
-	if (!new.ex_pathname)
-		goto finish;
-	new.ex_client = clp;
-	new.ex_path = path;
-	new.ex_flags = nxp->ex_flags;
-	new.ex_anon_uid = nxp->ex_anon_uid;
-	new.ex_anon_gid = nxp->ex_anon_gid;
-	new.ex_fsid = nxp->ex_dev;
-
-	exp = svc_export_lookup(&new);
-	if (exp)
-		exp = svc_export_update(&new, exp);
-
-	if (!exp)
-		goto finish;
-
-	if (exp_hash(clp, exp) ||
-	    exp_fsid_hash(clp, exp)) {
-		/* failed to create at least one index */
-		exp_do_unexport(exp);
-		cache_flush();
-	} else
-		err = 0;
-finish:
-	kfree(new.ex_pathname);
-	if (!IS_ERR_OR_NULL(exp))
-		exp_put(exp);
-	if (!IS_ERR_OR_NULL(fsid_key))
-		cache_put(&fsid_key->h, &svc_expkey_cache);
-	path_put(&path);
-out_put_clp:
-	auth_domain_put(clp);
-out_unlock:
-	exp_writeunlock();
-out:
-	return err;
-}
-
-/*
- * Unexport a file system. The export entry has already
- * been removed from the client's list of exported fs's.
- */
-static void
-exp_do_unexport(svc_export *unexp)
-{
-	sunrpc_invalidate(&unexp->h, &svc_export_cache);
-	exp_unhash(unexp);
-	exp_fsid_unhash(unexp);
-}
-
-
-/*
- * unexport syscall.
- */
-int
-exp_unexport(struct nfsctl_export *nxp)
-{
-	struct auth_domain *dom;
-	svc_export *exp;
-	struct path path;
-	int		err;
-
-	/* Consistency check */
-	if (!exp_verify_string(nxp->ex_path, NFS_MAXPATHLEN) ||
-	    !exp_verify_string(nxp->ex_client, NFSCLNT_IDMAX))
-		return -EINVAL;
-
-	exp_writelock();
-
-	err = -EINVAL;
-	dom = auth_domain_find(nxp->ex_client);
-	if (!dom) {
-		dprintk("nfsd: unexport couldn't find %s\n", nxp->ex_client);
-		goto out_unlock;
-	}
-
-	err = kern_path(nxp->ex_path, 0, &path);
-	if (err)
-		goto out_domain;
-
-	err = -EINVAL;
-	exp = exp_get_by_name(dom, &path, NULL);
-	path_put(&path);
-	if (IS_ERR(exp))
-		goto out_domain;
-
-	exp_do_unexport(exp);
-	exp_put(exp);
-	err = 0;
-
-out_domain:
-	auth_domain_put(dom);
-	cache_flush();
-out_unlock:
-	exp_writeunlock();
-	return err;
-}
-#endif /* CONFIG_NFSD_DEPRECATED */
 
 /*
  * Obtain the root fh on behalf of a client.
···
 	unsigned hash, export;
 	struct cache_head *ch;
 	
-	exp_readlock();
 	read_lock(&svc_export_cache.hash_lock);
 	if (!n--)
 		return SEQ_START_TOKEN;
···
 	__releases(svc_export_cache.hash_lock)
 {
 	read_unlock(&svc_export_cache.hash_lock);
-	exp_readunlock();
 }
 
 static struct flags {
···
 	.show	= e_show,
 };
 
-#ifdef CONFIG_NFSD_DEPRECATED
-/*
- * Add or modify a client.
- * Change requests may involve the list of host addresses. The list of
- * exports and possibly existing uid maps are left untouched.
- */
-int
-exp_addclient(struct nfsctl_client *ncp)
-{
-	struct auth_domain	*dom;
-	int			i, err;
-	struct in6_addr addr6;
-
-	/* First, consistency check. */
-	err = -EINVAL;
-	if (! exp_verify_string(ncp->cl_ident, NFSCLNT_IDMAX))
-		goto out;
-	if (ncp->cl_naddr > NFSCLNT_ADDRMAX)
-		goto out;
-
-	/* Lock the hashtable */
-	exp_writelock();
-
-	dom = unix_domain_find(ncp->cl_ident);
-
-	err = -ENOMEM;
-	if (!dom)
-		goto out_unlock;
-
-	/* Insert client into hashtable. */
-	for (i = 0; i < ncp->cl_naddr; i++) {
-		ipv6_addr_set_v4mapped(ncp->cl_addrlist[i].s_addr, &addr6);
-		auth_unix_add_addr(&init_net, &addr6, dom);
-	}
-	auth_unix_forget_old(dom);
-	auth_domain_put(dom);
-
-	err = 0;
-
-out_unlock:
-	exp_writeunlock();
-out:
-	return err;
-}
-
-/*
- * Delete a client given an identifier.
- */
-int
-exp_delclient(struct nfsctl_client *ncp)
-{
-	int		err;
-	struct auth_domain *dom;
-
-	err = -EINVAL;
-	if (!exp_verify_string(ncp->cl_ident, NFSCLNT_IDMAX))
-		goto out;
-
-	/* Lock the hashtable */
-	exp_writelock();
-
-	dom = auth_domain_find(ncp->cl_ident);
-	/* just make sure that no addresses work 
-	 * and that it will expire soon 
-	 */
-	if (dom) {
-		err = auth_unix_forget_old(dom);
-		auth_domain_put(dom);
-	}
-
-	exp_writeunlock();
-out:
-	return err;
-}
-
-/*
- * Verify that string is non-empty and does not exceed max length.
- */
-static int
-exp_verify_string(char *cp, int max)
-{
-	int	i;
-
-	for (i = 0; i < max; i++)
-		if (!cp[i])
-			return i;
-	cp[i] = 0;
-	printk(KERN_NOTICE "nfsd: couldn't validate string %s\n", cp);
-	return 0;
-}
-#endif /* CONFIG_NFSD_DEPRECATED */
 
 /*
  * Initialize the exports module.
···
 void
 nfsd_export_flush(void)
 {
-	exp_writelock();
 	cache_purge(&svc_expkey_cache);
 	cache_purge(&svc_export_cache);
-	exp_writeunlock();
 }
 
 /*
···
 
 	dprintk("nfsd: shutting down export module.\n");
 
-	exp_writelock();
-
 	cache_unregister(&svc_expkey_cache);
 	cache_unregister(&svc_export_cache);
 	svcauth_unix_purge();
 
-	exp_writeunlock();
 	dprintk("nfsd: export shutdown complete.\n");
 }

fs/nfsd/lockd.c

···
 	memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size);
 	fh.fh_export = NULL;
 
-	exp_readlock();
 	nfserr = nfsd_open(rqstp, &fh, S_IFREG, NFSD_MAY_LOCK, filp);
 	fh_put(&fh);
-	exp_readunlock();
  	/* We return nlm error codes as nlm doesn't know
 	 * about nfsd, but nfsd does know about nlm..
 	 */

fs/nfsd/nfs4proc.c

···
 	if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
 		return nfserr_inval;
 
+	/*
+	 * RFC5661 18.51.3
+	 * Before RECLAIM_COMPLETE done, server should deny new lock
+	 */
+	if (nfsd4_has_session(cstate) &&
+	    !cstate->session->se_client->cl_firststate &&
+	    open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
+		return nfserr_grace;
+
 	if (nfsd4_has_session(cstate))
 		copy_clientid(&open->op_clientid, cstate->session);
 
···
 	nfsd4op_func op_func;
 	u32 op_flags;
 	char *op_name;
+	/*
+	 * We use the DRC for compounds containing non-idempotent
+	 * operations, *except* those that are 4.1-specific (since
+	 * sessions provide their own EOS), and except for stateful
+	 * operations other than setclientid and setclientid_confirm
+	 * (since sequence numbers provide EOS for open, lock, etc in
+	 * the v4.0 case).
+	 */
+	bool op_cacheresult;
 };
 
 static struct nfsd4_operation nfsd4_ops[];
···
 static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
 {
 	return &nfsd4_ops[op->opnum];
+}
+
+bool nfsd4_cache_this_op(struct nfsd4_op *op)
+{
+	return OPDESC(op)->op_cacheresult;
 }
 
 static bool need_wrongsec_check(struct svc_rqst *rqstp)
···
 	fh_put(&resp->cstate.save_fh);
 	BUG_ON(resp->cstate.replay_owner);
 out:
-	nfsd4_release_compoundargs(args);
 	/* Reset deferral mechanism for RPC deferrals */
 	rqstp->rq_usedeferral = 1;
 	dprintk("nfsv4 compound returned %d\n", ntohl(status));
···
 	[OP_CREATE] = {
 		.op_func = (nfsd4op_func)nfsd4_create,
 		.op_name = "OP_CREATE",
+		.op_cacheresult = true,
 	},
 	[OP_DELEGRETURN] = {
 		.op_func = (nfsd4op_func)nfsd4_delegreturn,
···
 	[OP_LINK] = {
 		.op_func = (nfsd4op_func)nfsd4_link,
 		.op_name = "OP_LINK",
+		.op_cacheresult = true,
 	},
 	[OP_LOCK] = {
 		.op_func = (nfsd4op_func)nfsd4_lock,
···
 	[OP_REMOVE] = {
 		.op_func = (nfsd4op_func)nfsd4_remove,
 		.op_name = "OP_REMOVE",
+		.op_cacheresult = true,
 	},
 	[OP_RENAME] = {
 		.op_name = "OP_RENAME",
 		.op_func = (nfsd4op_func)nfsd4_rename,
+		.op_cacheresult = true,
 	},
 	[OP_RENEW] = {
 		.op_func = (nfsd4op_func)nfsd4_renew,
···
 	[OP_SETATTR] = {
 		.op_func = (nfsd4op_func)nfsd4_setattr,
 		.op_name = "OP_SETATTR",
+		.op_cacheresult = true,
 	},
 	[OP_SETCLIENTID] = {
 		.op_func = (nfsd4op_func)nfsd4_setclientid,
 		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
 		.op_name = "OP_SETCLIENTID",
+		.op_cacheresult = true,
 	},
 	[OP_SETCLIENTID_CONFIRM] = {
 		.op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
 		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
 		.op_name = "OP_SETCLIENTID_CONFIRM",
+		.op_cacheresult = true,
 	},
 	[OP_VERIFY] = {
 		.op_func = (nfsd4op_func)nfsd4_verify,
···
 	[OP_WRITE] = {
 		.op_func = (nfsd4op_func)nfsd4_write,
 		.op_name = "OP_WRITE",
+		.op_cacheresult = true,
 	},
 	[OP_RELEASE_LOCKOWNER] = {
 		.op_func = (nfsd4op_func)nfsd4_release_lockowner,
···
 		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
 		.op_name = "OP_SEQUENCE",
 	},
+	[OP_DESTROY_CLIENTID] = {
+		.op_func = NULL,
+		.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+		.op_name = "OP_DESTROY_CLIENTID",
+	},
 	[OP_RECLAIM_COMPLETE] = {
 		.op_func = (nfsd4op_func)nfsd4_reclaim_complete,
 		.op_flags = ALLOWED_WITHOUT_FH,
···
 		.op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
 		.op_flags = OP_HANDLES_WRONGSEC,
 		.op_name = "OP_SECINFO_NO_NAME",
+	},
+	[OP_TEST_STATEID] = {
+		.op_func = (nfsd4op_func)nfsd4_test_stateid,
+		.op_flags = ALLOWED_WITHOUT_FH,
+		.op_name = "OP_TEST_STATEID",
+	},
+	[OP_FREE_STATEID] = {
+		.op_func = (nfsd4op_func)nfsd4_free_stateid,
+		.op_flags = ALLOWED_WITHOUT_FH,
+		.op_name = "OP_FREE_STATEID",
 	},
 };
 
···
 #define nfsd4_voidres			nfsd4_voidargs
 struct nfsd4_voidargs { int dummy; };
 
-/*
- * TODO: At the present time, the NFSv4 server does not do XID caching
- * of requests.  Implementing XID caching would not be a serious problem,
- * although it would require a mild change in interfaces since one
- * doesn't know whether an NFSv4 request is idempotent until after the
- * XDR decode.  However, XID caching totally confuses pynfs (Peter
- * Astrand's regression testsuite for NFSv4 servers), which reuses
- * XID's liberally, so I've left it unimplemented until pynfs generates
- * better XID's.
- */
 static struct svc_procedure		nfsd_procedures4[2] = {
 	[NFSPROC4_NULL] = {
 		.pc_func = (svc_procfunc) nfsd4_proc_null,
···
 		.pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
 		.pc_argsize = sizeof(struct nfsd4_compoundargs),
 		.pc_ressize = sizeof(struct nfsd4_compoundres),
+		.pc_release = nfsd4_release_compoundargs,
 		.pc_cachetype = RC_NOCACHE,
 		.pc_xdrressize = NFSD_BUFSIZE/4,
 	},

fs/nfsd/nfs4state.c

···
 #include <linux/slab.h>
 #include <linux/namei.h>
 #include <linux/swap.h>
+#include <linux/pagemap.h>
 #include <linux/sunrpc/svcauth_gss.h>
 #include <linux/sunrpc/clnt.h>
 #include "xdr4.h"
···
 
 /* forward declarations */
 static struct nfs4_stateid * find_stateid(stateid_t *stid, int flags);
+static struct nfs4_stateid * search_for_stateid(stateid_t *stid);
+static struct nfs4_delegation * search_for_delegation(stateid_t *stid);
 static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid);
 static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
 static void nfs4_set_recdir(char *recdir);
+static int check_for_locks(struct nfs4_file *filp, struct nfs4_stateowner *lowner);
 
 /* Locking: */
 
···
 	BUG();
 }
 
-static int nfs4_access_bmap_to_omode(struct nfs4_stateid *stp)
-{
-	unsigned int access;
-
-	set_access(&access, stp->st_access_bmap);
-	return nfs4_access_to_omode(access);
-}
-
 static void unhash_generic_stateid(struct nfs4_stateid *stp)
 {
 	list_del(&stp->st_hash);
···
 
 static void free_generic_stateid(struct nfs4_stateid *stp)
 {
-	int oflag;
+	int i;
 
 	if (stp->st_access_bmap) {
-		oflag = nfs4_access_bmap_to_omode(stp);
-		nfs4_file_put_access(stp->st_file, oflag);
+		for (i = 1; i < 4; i++) {
+			if (test_bit(i, &stp->st_access_bmap))
+				nfs4_file_put_access(stp->st_file,
+						nfs4_access_to_omode(i));
+		}
 	}
 	put_nfs4_file(stp->st_file);
 	kmem_cache_free(stateid_slab, stp);
···
 	return slot->sl_status;
 }
 
+#define NFSD_MIN_REQ_HDR_SEQ_SZ	((\
+			2 * 2 + /* credential,verifier: AUTH_NULL, length 0 */ \
+			1 +	/* MIN tag is length with zero, only length */ \
+			3 +	/* version, opcount, opcode */ \
+			XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
+				/* seqid, slotID, slotID, cache */ \
+			4 ) * sizeof(__be32))
+
+#define NFSD_MIN_RESP_HDR_SEQ_SZ ((\
+			2 +	/* verifier: AUTH_NULL, length 0 */\
+			1 +	/* status */ \
+			1 +	/* MIN tag is length with zero, only length */ \
+			3 +	/* opcount, opcode, opstatus*/ \
+			XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
+				/* seqid, slotID, slotID, slotID, status */ \
+			5 ) * sizeof(__be32))
+
+static __be32 check_forechannel_attrs(struct nfsd4_channel_attrs fchannel)
+{
+	return fchannel.maxreq_sz < NFSD_MIN_REQ_HDR_SEQ_SZ
+		|| fchannel.maxresp_sz < NFSD_MIN_RESP_HDR_SEQ_SZ;
+}
+
 __be32
 nfsd4_create_session(struct svc_rqst *rqstp,
 		     struct nfsd4_compound_state *cstate,
···
 	 */
 	cr_ses->flags &= ~SESSION4_PERSIST;
 	cr_ses->flags &= ~SESSION4_RDMA;
+
+	status = nfserr_toosmall;
+	if (check_forechannel_attrs(cr_ses->fore_channel))
+		goto out;
 
 	status = nfserr_jukebox;
 	new = alloc_init_session(rqstp, conf, cr_ses);
···
 	return args->opcnt > session->se_fchannel.maxops;
 }
 
+static bool nfsd4_request_too_big(struct svc_rqst *rqstp,
+				  struct nfsd4_session *session)
+{
+	struct xdr_buf *xb = &rqstp->rq_arg;
+
+	return xb->len > session->se_fchannel.maxreq_sz;
+}
+
 __be32
 nfsd4_sequence(struct svc_rqst *rqstp,
 	       struct nfsd4_compound_state *cstate,
···
 
 	status = nfserr_too_many_ops;
 	if (nfsd4_session_too_many_ops(rqstp, session))
+		goto out;
+
+	status = nfserr_req_too_big;
+	if (nfsd4_request_too_big(rqstp, session))
 		goto out;
 
 	status = nfserr_badslot;
···
 	return ret;
 }
 
-static inline void
-nfs4_file_downgrade(struct nfs4_file *fp, unsigned int share_access)
-{
-	if (share_access & NFS4_SHARE_ACCESS_WRITE)
-		nfs4_file_put_access(fp, O_WRONLY);
-	if (share_access & NFS4_SHARE_ACCESS_READ)
-		nfs4_file_put_access(fp, O_RDONLY);
-}
-
 static void nfsd_break_one_deleg(struct nfs4_delegation *dp)
 {
 	/* We're assuming the state code never drops its reference
···
 }
 
 static const struct lock_manager_operations nfsd_lease_mng_ops = {
-	.fl_break = nfsd_break_deleg_cb,
-	.fl_change = nfsd_change_deleg_cb,
+	.lm_break = nfsd_break_deleg_cb,
+	.lm_change = nfsd_change_deleg_cb,
 };
 
 
···
 	return flags;
 }
 
-static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file
-*fp, struct svc_fh *cur_fh, u32 nfs4_access)
+static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp,
+		struct svc_fh *cur_fh, struct nfsd4_open *open)
 {
 	__be32 status;
-	int oflag = nfs4_access_to_omode(nfs4_access);
-	int access = nfs4_access_to_access(nfs4_access);
+	int oflag = nfs4_access_to_omode(open->op_share_access);
+	int access = nfs4_access_to_access(open->op_share_access);
+
+	/* CLAIM_DELEGATE_CUR is used in response to a broken lease;
+	 * allowing it to break the lease and return EAGAIN leaves the
+	 * client unable to make progress in returning the delegation */
+	if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
+		access |= NFSD_MAY_NOT_BREAK_LEASE;
 
 	if (!fp->fi_fds[oflag]) {
 		status = nfsd_open(rqstp, cur_fh, S_IFREG, access,
···
 	if (stp == NULL)
 		return nfserr_resource;
 
-	status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open->op_share_access);
+	status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open);
 	if (status) {
 		kmem_cache_free(stateid_slab, stp);
 		return status;
···
 
 	new_access = !test_bit(op_share_access, &stp->st_access_bmap);
 	if (new_access) {
-		status = nfs4_get_vfs_file(rqstp, fp, cur_fh, op_share_access);
+		status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open);
 		if (status)
 			return status;
 	}
 	status = nfsd4_truncate(rqstp, cur_fh, open);
 	if (status) {
 		if (new_access) {
-			int oflag = nfs4_access_to_omode(new_access);
+			int oflag = nfs4_access_to_omode(op_share_access);
 			nfs4_file_put_access(fp, oflag);
 		}
 		return status;
···
 	return stateid->si_fileid == 0;
 }
 
+static int is_open_stateid(struct nfs4_stateid *stateid)
+{
+	return stateid->st_openstp == NULL;
+}
+
+__be32 nfs4_validate_stateid(stateid_t *stateid, int flags)
+{
+	struct nfs4_stateid *stp = NULL;
+	__be32 status = nfserr_stale_stateid;
+
+	if (STALE_STATEID(stateid))
+		goto out;
+
+	status = nfserr_expired;
+	stp = search_for_stateid(stateid);
+	if (!stp)
+		goto out;
+	status = nfserr_bad_stateid;
+
+	if (!stp->st_stateowner->so_confirmed)
+		goto out;
+
+	status = check_stateid_generation(stateid, &stp->st_stateid, flags);
+	if (status)
+		goto out;
+
+	status = nfs_ok;
+out:
+	return status;
+}
+
 /*
 * Checks for stateid operations
 */
···
 	status = nfs_ok;
 out:
 	return status;
+}
+
+static __be32
+nfsd4_free_delegation_stateid(stateid_t *stateid)
+{
+	struct nfs4_delegation *dp = search_for_delegation(stateid);
+	if (dp)
+		return nfserr_locks_held;
+	return nfserr_bad_stateid;
+}
+
+static __be32
+nfsd4_free_lock_stateid(struct nfs4_stateid *stp)
+{
+	if (check_for_locks(stp->st_file, stp->st_stateowner))
+		return nfserr_locks_held;
+	release_lock_stateid(stp);
+	return nfs_ok;
+}
+
+/*
+ * Test if the stateid is valid
+ */
+__be32
+nfsd4_test_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+		   struct nfsd4_test_stateid *test_stateid)
+{
+	test_stateid->ts_has_session = nfsd4_has_session(cstate);
+	return nfs_ok;
+}
+
+/*
+ * Free a state id
+ */
+__be32
+nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+		   struct nfsd4_free_stateid *free_stateid)
+{
+	stateid_t *stateid = &free_stateid->fr_stateid;
+	struct nfs4_stateid *stp;
+	__be32 ret;
+
+	nfs4_lock_state();
+	if (is_delegation_stateid(stateid)) {
+		ret = nfsd4_free_delegation_stateid(stateid);
+		goto out;
+	}
+
+	stp = search_for_stateid(stateid);
+	if (!stp) {
+		ret = nfserr_bad_stateid;
+		goto out;
+	}
+	if (stateid->si_generation != 0) {
+		if (stateid->si_generation < stp->st_stateid.si_generation) {
+			ret = nfserr_old_stateid;
+			goto out;
+		}
+		if (stateid->si_generation > stp->st_stateid.si_generation) {
+			ret = nfserr_bad_stateid;
+			goto out;
+		}
+	}
+
+	if (is_open_stateid(stp)) {
+		ret = nfserr_locks_held;
+		goto out;
+	} else {
+		ret = nfsd4_free_lock_stateid(stp);
+		goto out;
+	}
+
+out:
+	nfs4_unlock_state();
+	return ret;
 }
 
 static inline int
···
 	return status;
 }
 
-
-/*
- * unset all bits in union bitmap (bmap) that
- * do not exist in share (from successful OPEN_DOWNGRADE)
- */
-static void
-reset_union_bmap_access(unsigned long access, unsigned long *bmap)
+static inline void nfs4_file_downgrade(struct nfs4_stateid *stp, unsigned int to_access)
 {
 	int i;
+
 	for (i = 1; i < 4; i++) {
-		if ((i & access) != i)
-			__clear_bit(i, bmap);
+		if (test_bit(i, &stp->st_access_bmap) && !(i & to_access)) {
+			nfs4_file_put_access(stp->st_file, i);
+			__clear_bit(i, &stp->st_access_bmap);
+		}
 	}
 }
 
···
 {
 	__be32 status;
 	struct nfs4_stateid *stp;
-	unsigned int share_access;
 
 	dprintk("NFSD: nfsd4_open_downgrade on file %.*s\n", 
 			(int)cstate->current_fh.fh_dentry->d_name.len,
···
 			stp->st_deny_bmap, od->od_share_deny);
 		goto out;
 	}
-	set_access(&share_access, stp->st_access_bmap);
-	nfs4_file_downgrade(stp->st_file, share_access & ~od->od_share_access);
+	nfs4_file_downgrade(stp, od->od_share_access);
 
-	reset_union_bmap_access(od->od_share_access, &stp->st_access_bmap);
 	reset_union_bmap_deny(od->od_share_deny, &stp->st_deny_bmap);
 
 	update_stateid(&stp->st_stateid);
···
 static struct list_head	lock_ownerstr_hashtbl[LOCK_HASH_SIZE];
 static struct list_head lockstateid_hashtbl[STATEID_HASH_SIZE];
 
+static int
+same_stateid(stateid_t *id_one, stateid_t *id_two)
+{
+	if (id_one->si_stateownerid != id_two->si_stateownerid)
+		return 0;
+	return id_one->si_fileid == id_two->si_fileid;
+}
+
 static struct nfs4_stateid *
 find_stateid(stateid_t *stid, int flags)
 {
···
 			if ((local->st_stateid.si_stateownerid == st_id) &&
 			    (local->st_stateid.si_fileid == f_id))
 				return local;
+		}
+	}
+	return NULL;
+}
+
+static struct nfs4_stateid *
+search_for_stateid(stateid_t *stid)
+{
+	struct nfs4_stateid *local;
+	unsigned int hashval = stateid_hashval(stid->si_stateownerid, stid->si_fileid);
+
+	list_for_each_entry(local, &lockstateid_hashtbl[hashval], st_hash) {
+		if (same_stateid(&local->st_stateid, stid))
+			return local;
+	}
+
+	list_for_each_entry(local, &stateid_hashtbl[hashval], st_hash) {
+		if (same_stateid(&local->st_stateid, stid))
+			return local;
+	}
+	return NULL;
+}
+
+static struct nfs4_delegation *
+search_for_delegation(stateid_t *stid)
+{
+	struct nfs4_file *fp;
+	struct nfs4_delegation *dp;
+	struct list_head *pos;
+	int i;
+
+	for (i = 0; i < FILE_HASH_SIZE; i++) {
+		list_for_each_entry(fp, &file_hashtbl[i], fi_hash) {
+			list_for_each(pos, &fp->fi_delegations) {
+				dp = list_entry(pos, struct nfs4_delegation, dl_perfile);
+				if (same_stateid(&dp->dl_stateid, stid))
+					return dp;
+			}
 		}
 	}
 	return NULL;

fs/nfsd/nfs4xdr.c

···
 #include <linux/namei.h>
 #include <linux/statfs.h>
 #include <linux/utsname.h>
+#include <linux/pagemap.h>
 #include <linux/sunrpc/svcauth_gss.h>
 
 #include "idmap.h"
 #include "acl.h"
 #include "xdr4.h"
 #include "vfs.h"
-
+#include "state.h"
+#include "cache.h"
 
 #define NFSDDBG_FACILITY		NFSDDBG_XDR
 
···
 		goto xdr_error;			\
 	}					\
 } while (0)
+
+static void save_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep)
+{
+	savep->p        = argp->p;
+	savep->end      = argp->end;
+	savep->pagelen  = argp->pagelen;
+	savep->pagelist = argp->pagelist;
+}
+
+static void restore_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep)
+{
+	argp->p        = savep->p;
+	argp->end      = savep->end;
+	argp->pagelen  = savep->pagelen;
+	argp->pagelist = savep->pagelist;
+}
 
 static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
 {
···
 }
 
 static __be32
+nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp,
+			  struct nfsd4_free_stateid *free_stateid)
+{
+	DECODE_HEAD;
+
+	READ_BUF(sizeof(stateid_t));
+	READ32(free_stateid->fr_stateid.si_generation);
+	COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t));
+
+	DECODE_TAIL;
+}
+
+static __be32
 nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
 		      struct nfsd4_sequence *seq)
 {
···
 	READ32(seq->cachethis);
 
 	DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid)
+{
+	unsigned int nbytes;
+	stateid_t si;
+	int i;
+	__be32 *p;
+	__be32 status;
+
+	READ_BUF(4);
+	test_stateid->ts_num_ids = ntohl(*p++);
+
+	nbytes = test_stateid->ts_num_ids * sizeof(stateid_t);
+	if (nbytes > (u32)((char *)argp->end - (char *)argp->p))
+		goto xdr_error;
+
+	test_stateid->ts_saved_args = argp;
+	save_buf(argp, &test_stateid->ts_savedp);
+
+	for (i = 0; i < test_stateid->ts_num_ids; i++) {
+		status = nfsd4_decode_stateid(argp, &si);
+		if (status)
+			return status;
+	}
+
+	status = 0;
+out:
+	return status;
+xdr_error:
+	dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__);
+	status = nfserr_bad_xdr;
+	goto out;
 }
 
 static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc)
···
 	[OP_EXCHANGE_ID]	= (nfsd4_dec)nfsd4_decode_exchange_id,
 	[OP_CREATE_SESSION]	= (nfsd4_dec)nfsd4_decode_create_session,
 	[OP_DESTROY_SESSION]	= (nfsd4_dec)nfsd4_decode_destroy_session,
-	[OP_FREE_STATEID]	= (nfsd4_dec)nfsd4_decode_notsupp,
+	[OP_FREE_STATEID]	= (nfsd4_dec)nfsd4_decode_free_stateid,
 	[OP_GET_DIR_DELEGATION]	= (nfsd4_dec)nfsd4_decode_notsupp,
 	[OP_GETDEVICEINFO]	= (nfsd4_dec)nfsd4_decode_notsupp,
 	[OP_GETDEVICELIST]	= (nfsd4_dec)nfsd4_decode_notsupp,
···
 	[OP_SECINFO_NO_NAME]	= (nfsd4_dec)nfsd4_decode_secinfo_no_name,
 	[OP_SEQUENCE]		= (nfsd4_dec)nfsd4_decode_sequence,
 	[OP_SET_SSV]		= (nfsd4_dec)nfsd4_decode_notsupp,
-	[OP_TEST_STATEID]	= (nfsd4_dec)nfsd4_decode_notsupp,
+	[OP_TEST_STATEID]	= (nfsd4_dec)nfsd4_decode_test_stateid,
 	[OP_WANT_DELEGATION]	= (nfsd4_dec)nfsd4_decode_notsupp,
 	[OP_DESTROY_CLIENTID]	= (nfsd4_dec)nfsd4_decode_notsupp,
 	[OP_RECLAIM_COMPLETE]	= (nfsd4_dec)nfsd4_decode_reclaim_complete,
···
 	DECODE_HEAD;
 	struct nfsd4_op *op;
 	struct nfsd4_minorversion_ops *ops;
+	bool cachethis = false;
 	int i;
 
 	/*
···
 			argp->opcnt = i+1;
 			break;
 		}
+		/*
+		 * We'll try to cache the result in the DRC if any one
+		 * op in the compound wants to be cached:
+		 */
+		cachethis |= nfsd4_cache_this_op(op);
 	}
+	/* Sessions make the DRC unnecessary: */
+	if (argp->minorversion)
+		cachethis = false;
+	argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE;
 
 	DECODE_TAIL;
 }
···
 }
 
 static __be32
+nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, int nfserr,
+			  struct nfsd4_free_stateid *free_stateid)
+{
+	__be32 *p;
+
+	if (nfserr)
+		return nfserr;
+
+	RESERVE_SPACE(4);
+	WRITE32(nfserr);
+	ADJUST_ARGS();
+	return nfserr;
+}
+
+static __be32
 nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
 		      struct nfsd4_sequence *seq)
 {
···
 	ADJUST_ARGS();
 	resp->cstate.datap = p; /* DRC cache data pointer */
 	return 0;
+}
+
+__be32
+nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr,
+			  struct nfsd4_test_stateid *test_stateid)
+{
+	struct nfsd4_compoundargs *argp;
+	stateid_t si;
+	__be32 *p;
+	int i;
+	int valid;
+
+	restore_buf(test_stateid->ts_saved_args, &test_stateid->ts_savedp);
+	argp = test_stateid->ts_saved_args;
+
+	RESERVE_SPACE(4);
+	*p++ = htonl(test_stateid->ts_num_ids);
+	resp->p = p;
+
+	nfs4_lock_state();
+	for (i = 0; i < test_stateid->ts_num_ids; i++) {
+		nfsd4_decode_stateid(argp, &si);
+		valid = nfs4_validate_stateid(&si, test_stateid->ts_has_session);
+		RESERVE_SPACE(4);
+		*p++ = htonl(valid);
+		resp->p = p;
+	}
+	nfs4_unlock_state();
+
+	return nfserr;
 }
 
 static __be32
···
 	[OP_EXCHANGE_ID]	= (nfsd4_enc)nfsd4_encode_exchange_id,
 	[OP_CREATE_SESSION]	= (nfsd4_enc)nfsd4_encode_create_session,
 	[OP_DESTROY_SESSION]	= (nfsd4_enc)nfsd4_encode_destroy_session,
-	[OP_FREE_STATEID]	= (nfsd4_enc)nfsd4_encode_noop,
+	[OP_FREE_STATEID]	= (nfsd4_enc)nfsd4_encode_free_stateid,
 	[OP_GET_DIR_DELEGATION]	= (nfsd4_enc)nfsd4_encode_noop,
 	[OP_GETDEVICEINFO]	= (nfsd4_enc)nfsd4_encode_noop,
 	[OP_GETDEVICELIST]	= (nfsd4_enc)nfsd4_encode_noop,
···
 	[OP_SECINFO_NO_NAME]	= (nfsd4_enc)nfsd4_encode_secinfo_no_name,
 	[OP_SEQUENCE]		= (nfsd4_enc)nfsd4_encode_sequence,
 	[OP_SET_SSV]		= (nfsd4_enc)nfsd4_encode_noop,
-	[OP_TEST_STATEID]	= (nfsd4_enc)nfsd4_encode_noop,
+	[OP_TEST_STATEID]	= (nfsd4_enc)nfsd4_encode_test_stateid,
 	[OP_WANT_DELEGATION]	= (nfsd4_enc)nfsd4_encode_noop,
 	[OP_DESTROY_CLIENTID]	= (nfsd4_enc)nfsd4_encode_noop,
 	[OP_RECLAIM_COMPLETE]	= (nfsd4_enc)nfsd4_encode_noop,
···
         return xdr_ressize_check(rqstp, p);
 }
 
-void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args)
+int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp)
 {
+	struct svc_rqst *rqstp = rq;
+	struct nfsd4_compoundargs *args = rqstp->rq_argp;
+
 	if (args->ops != args->iops) {
 		kfree(args->ops);
 		args->ops = args->iops;
···
 		tb->release(tb->buf);
 		kfree(tb);
 	}
+	return 1;
 }
 
 int
 nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args)
 {
-	__be32 status;
-
 	args->p = p;
 	args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len;
 	args->pagelist = rqstp->rq_arg.pages;
···
 	args->ops = args->iops;
 	args->rqstp = rqstp;
 
-	status = nfsd4_decode_compound(args);
-	if (status) {
-		nfsd4_release_compoundargs(args);
-	}
-	return !status;
+	return !nfsd4_decode_compound(args);
 }
 
 int

fs/nfsd/nfscache.c

···
  * Note that no operation within the loop may sleep.
  */
 int
-nfsd_cache_lookup(struct svc_rqst *rqstp, int type)
+nfsd_cache_lookup(struct svc_rqst *rqstp)
 {
 	struct hlist_node	*hn;
 	struct hlist_head 	*rh;
···
 				vers = rqstp->rq_vers,
 				proc = rqstp->rq_proc;
 	unsigned long		age;
+	int type = rqstp->rq_cachetype;
 	int rtn;
 
 	rqstp->rq_cacherep = NULL;

fs/nfsd/nfsctl.c

···
  */
 enum {
 	NFSD_Root = 1,
-#ifdef CONFIG_NFSD_DEPRECATED
-	NFSD_Svc,
-	NFSD_Add,
-	NFSD_Del,
-	NFSD_Export,
-	NFSD_Unexport,
-	NFSD_Getfd,
-	NFSD_Getfs,
-#endif
 	NFSD_List,
 	NFSD_Export_features,
 	NFSD_Fh,
···
 /*
  * write() for these nodes.
  */
-#ifdef CONFIG_NFSD_DEPRECATED
-static ssize_t write_svc(struct file *file, char *buf, size_t size);
-static ssize_t write_add(struct file *file, char *buf, size_t size);
-static ssize_t write_del(struct file *file, char *buf, size_t size);
-static ssize_t write_export(struct file *file, char *buf, size_t size);
-static ssize_t write_unexport(struct file *file, char *buf, size_t size);
-static ssize_t write_getfd(struct file *file, char *buf, size_t size);
-static ssize_t write_getfs(struct file *file, char *buf, size_t size);
-#endif
 static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
 static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size);
 static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size);
···
 #endif
 
 static ssize_t (*write_op[])(struct file *, char *, size_t) = {
-#ifdef CONFIG_NFSD_DEPRECATED
-	[NFSD_Svc] = write_svc,
-	[NFSD_Add] = write_add,
-	[NFSD_Del] = write_del,
-	[NFSD_Export] = write_export,
-	[NFSD_Unexport] = write_unexport,
-	[NFSD_Getfd] = write_getfd,
-	[NFSD_Getfs] = write_getfs,
-#endif
 	[NFSD_Fh] = write_filehandle,
 	[NFSD_FO_UnlockIP] = write_unlock_ip,
 	[NFSD_FO_UnlockFS] = write_unlock_fs,
···
 
 static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos)
 {
-#ifdef CONFIG_NFSD_DEPRECATED
-	static int warned;
-	if (file->f_dentry->d_name.name[0] == '.' && !warned) {
-		printk(KERN_INFO
-		       "Warning: \"%s\" uses deprecated NFSD interface: %s."
-		       "  This will be removed in 2.6.40\n",
-		       current->comm, file->f_dentry->d_name.name);
-		warned = 1;
-	}
-#endif
 	if (! file->private_data) {
 		/* An attempt to read a transaction file without writing
 		 * causes a 0-byte write so that the file can return
···
  * payload - write methods
  */
 
-#ifdef CONFIG_NFSD_DEPRECATED
-/**
- * write_svc - Start kernel's NFSD server
- *
- * Deprecated.  /proc/fs/nfsd/threads is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_svc
- *				svc_port:	port number of this
- *						server's listener
- *				svc_nthreads:	number of threads to start
- *			size:	size in bytes of passed in nfsctl_svc
- * Output:
- *	On success:	returns zero
- *	On error:	return code is negative errno value
- */
-static ssize_t write_svc(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_svc *data;
-	int err;
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_svc*) buf;
-	err = nfsd_svc(data->svc_port, data->svc_nthreads);
-	if (err < 0)
-		return err;
-	return 0;
-}
-
-/**
- * write_add - Add or modify client entry in auth unix cache
- *
- * Deprecated.  /proc/net/rpc/auth.unix.ip is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_client
- *				cl_ident:	'\0'-terminated C string
- *						containing domain name
- *						of client
- *				cl_naddr:	no. of items in cl_addrlist
- *				cl_addrlist:	array of client addresses
- *				cl_fhkeytype:	ignored
- *				cl_fhkeylen:	ignored
- *				cl_fhkey:	ignored
- *			size:	size in bytes of passed in nfsctl_client
- * Output:
- *	On success:	returns zero
- *	On error:	return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since
- * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
- */
-static ssize_t write_add(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_client *data;
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_client *)buf;
-	return exp_addclient(data);
-}
-
-/**
- * write_del - Remove client from auth unix cache
- *
- * Deprecated.  /proc/net/rpc/auth.unix.ip is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_client
- *				cl_ident:	'\0'-terminated C string
- *						containing domain name
- *						of client
- *				cl_naddr:	ignored
- *				cl_addrlist:	ignored
- *				cl_fhkeytype:	ignored
- *				cl_fhkeylen:	ignored
- *				cl_fhkey:	ignored
- *			size:	size in bytes of passed in nfsctl_client
- * Output:
- *	On success:	returns zero
- *	On error:	return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since
- * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
- */
-static ssize_t write_del(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_client *data;
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_client *)buf;
-	return exp_delclient(data);
-}
-
-/**
- * write_export - Export part or all of a local file system
- *
- * Deprecated.  /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_export
- *				ex_client:	'\0'-terminated C string
- *						containing domain name
- *						of client allowed to access
- *						this export
- *				ex_path:	'\0'-terminated C string
- *						containing pathname of
- *						directory in local file system
- *				ex_dev:		fsid to use for this export
- *				ex_ino:		ignored
- *				ex_flags:	export flags for this export
- *				ex_anon_uid:	UID to use for anonymous
- *						requests
- *				ex_anon_gid:	GID to use for anonymous
- *						requests
- *			size:	size in bytes of passed in nfsctl_export
- * Output:
- *	On success:	returns zero
- *	On error:	return code is negative errno value
- */
-static ssize_t write_export(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_export *data;
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_export*)buf;
-	return exp_export(data);
-}
-
-/**
- * write_unexport - Unexport a previously exported file system
- *
- * Deprecated.  /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_export
- *				ex_client:	'\0'-terminated C string
- *						containing domain name
- *						of client no longer allowed
- *						to access this export
- *				ex_path:	'\0'-terminated C string
- *						containing pathname of
- *						directory in local file system
- *				ex_dev:		ignored
- *				ex_ino:		ignored
- *				ex_flags:	ignored
- *				ex_anon_uid:	ignored
- *				ex_anon_gid:	ignored
- *			size:	size in bytes of passed in nfsctl_export
- * Output:
- *	On success:	returns zero
- *	On error:	return code is negative errno value
- */
-static ssize_t write_unexport(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_export *data;
-
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_export*)buf;
-	return exp_unexport(data);
-}
-
-/**
- * write_getfs - Get a variable-length NFS file handle by path
- *
- * Deprecated.  /proc/fs/nfsd/filehandle is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_fsparm
- *				gd_addr:	socket address of client
- *				gd_path:	'\0'-terminated C string
- *						containing pathname of
- *						directory in local file system
- *				gd_maxlen:	maximum size of returned file
- *						handle
- *			size:	size in bytes of passed in nfsctl_fsparm
- * Output:
- *	On success:	passed-in buffer filled with a knfsd_fh structure
- *			(a variable-length raw NFS file handle);
- *			return code is the size in bytes of the file handle
- *	On error:	return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since gd_addr
- * is the same size as a struct sockaddr_in.
- */
-static ssize_t write_getfs(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_fsparm *data;
-	struct sockaddr_in *sin;
-	struct auth_domain *clp;
-	int err = 0;
-	struct knfsd_fh *res;
-	struct in6_addr in6;
-
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_fsparm*)buf;
-	err = -EPROTONOSUPPORT;
-	if (data->gd_addr.sa_family != AF_INET)
-		goto out;
-	sin = (struct sockaddr_in *)&data->gd_addr;
-	if (data->gd_maxlen > NFS3_FHSIZE)
-		data->gd_maxlen = NFS3_FHSIZE;
-
-	res = (struct knfsd_fh*)buf;
-
-	exp_readlock();
-
-	ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
-
-	clp = auth_unix_lookup(&init_net, &in6);
-	if (!clp)
-		err = -EPERM;
-	else {
-		err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
-		auth_domain_put(clp);
-	}
-	exp_readunlock();
-	if (err == 0)
-		err = res->fh_size + offsetof(struct knfsd_fh, fh_base);
- out:
-	return err;
-}
-
-/**
- * write_getfd - Get a fixed-length NFS file handle by path (used by mountd)
- *
- * Deprecated.  /proc/fs/nfsd/filehandle is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_fdparm
- *				gd_addr:	socket address of client
- *				gd_path:	'\0'-terminated C string
- *						containing pathname of
- *						directory in local file system
- *				gd_version:	fdparm structure version
- *			size:	size in bytes of passed in nfsctl_fdparm
- * Output:
- *	On success:	passed-in buffer filled with nfsctl_res
- *			(a fixed-length raw NFS file handle);
- *			return code is the size in bytes of the file handle
- *	On error:	return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since gd_addr
- * is the same size as a struct sockaddr_in.
- */
-static ssize_t write_getfd(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_fdparm *data;
-	struct sockaddr_in *sin;
-	struct auth_domain *clp;
-	int err = 0;
-	struct knfsd_fh fh;
-	char *res;
-	struct in6_addr in6;
-
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_fdparm*)buf;
-	err = -EPROTONOSUPPORT;
-	if (data->gd_addr.sa_family != AF_INET)
-		goto out;
-	err = -EINVAL;
-	if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS)
-		goto out;
-
-	res = buf;
-	sin = (struct sockaddr_in *)&data->gd_addr;
-	exp_readlock();
-
-	ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
-
-	clp = auth_unix_lookup(&init_net, &in6);
-	if (!clp)
-		err = -EPERM;
-	else {
-		err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
-		auth_domain_put(clp);
-	}
-	exp_readunlock();
-
-	if (err == 0) {
-		memset(res,0, NFS_FHSIZE);
-		memcpy(res, &fh.fh_base, fh.fh_size);
-		err = NFS_FHSIZE;
-	}
- out:
-	return err;
-}
-#endif /* CONFIG_NFSD_DEPRECATED */
 
 /**
  * write_unlock_ip - Release all locks used by a client
···
 static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
 {
 	static struct tree_descr nfsd_files[] = {
-#ifdef CONFIG_NFSD_DEPRECATED
-		[NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR},
-		[NFSD_Add] = {".add", &transaction_ops, S_IWUSR},
-		[NFSD_Del] = {".del", &transaction_ops, S_IWUSR},
-		[NFSD_Export] = {".export", &transaction_ops, S_IWUSR},
-		[NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR},
-		[NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR},
-		[NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR},
-#endif
 		[NFSD_List] = {"exports", &exports_operations, S_IRUGO},
 		[NFSD_Export_features] = {"export_features",
 					&export_features_operations, S_IRUGO},

fs/nfsd/nfssvc.c

···
 			continue;
 		}
 
-
-		/* Lock the export hash tables for reading. */
-		exp_readlock();
-
 		validate_process_creds();
 		svc_process(rqstp);
 		validate_process_creds();
-
-		/* Unlock export hash tables */
-		exp_readunlock();
 	}
 
 	/* Clear signals before calling svc_exit_thread() */
···
 				rqstp->rq_vers, rqstp->rq_proc);
 	proc = rqstp->rq_procinfo;
 
+	/*
+	 * Give the xdr decoder a chance to change this if it wants
+	 * (necessary in the NFSv4.0 compound case)
+	 */
+	rqstp->rq_cachetype = proc->pc_cachetype;
+	/* Decode arguments */
+	xdr = proc->pc_decode;
+	if (xdr && !xdr(rqstp, (__be32*)rqstp->rq_arg.head[0].iov_base,
+			rqstp->rq_argp)) {
+		dprintk("nfsd: failed to decode arguments!\n");
+		*statp = rpc_garbage_args;
+		return 1;
+	}
+
 	/* Check whether we have this call in the cache. */
-	switch (nfsd_cache_lookup(rqstp, proc->pc_cachetype)) {
+	switch (nfsd_cache_lookup(rqstp)) {
 	case RC_INTR:
 	case RC_DROPIT:
 		return 0;
···
 		return 1;
 	case RC_DOIT:;
 		/* do it */
-	}
-
-	/* Decode arguments */
-	xdr = proc->pc_decode;
-	if (xdr && !xdr(rqstp, (__be32*)rqstp->rq_arg.head[0].iov_base,
-			rqstp->rq_argp)) {
-		dprintk("nfsd: failed to decode arguments!\n");
-		nfsd_cache_update(rqstp, RC_NOCACHE, NULL);
-		*statp = rpc_garbage_args;
-		return 1;
 	}
 
 	/* need to grab the location to store the status, as

fs/nfsd/state.h

···
 extern int nfsd4_create_clid_dir(struct nfs4_client *clp);
 extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
 extern void release_session_client(struct nfsd4_session *);
+extern __be32 nfs4_validate_stateid(stateid_t *, int);
 
 static inline void
 nfs4_put_stateowner(struct nfs4_stateowner *so)

fs/nfsd/xdr4.h

···
 	nfs4_verifier	sc_confirm;
 };
 
+struct nfsd4_saved_compoundargs {
+	__be32 *p;
+	__be32 *end;
+	int pagelen;
+	struct page **pagelist;
+};
+
+struct nfsd4_test_stateid {
+	__be32		ts_num_ids;
+	__be32		ts_has_session;
+	struct nfsd4_compoundargs *ts_saved_args;
+	struct nfsd4_saved_compoundargs ts_savedp;
+};
+
+struct nfsd4_free_stateid {
+	stateid_t	fr_stateid;         /* request */
+	__be32		fr_status;          /* response */
+};
+
 /* also used for NVERIFY */
 struct nfsd4_verify {
 	u32		ve_bmval[3];        /* request */
···
 		struct nfsd4_destroy_session	destroy_session;
 		struct nfsd4_sequence		sequence;
 		struct nfsd4_reclaim_complete	reclaim_complete;
+		struct nfsd4_test_stateid	test_stateid;
+		struct nfsd4_free_stateid	free_stateid;
 	} u;
 	struct nfs4_replay *			replay;
 };
+
+bool nfsd4_cache_this_op(struct nfsd4_op *);
 
 struct nfsd4_compoundargs {
 	/* scratch variables for XDR decode */
···
 	u32				opcnt;
 	struct nfsd4_op			*ops;
 	struct nfsd4_op			iops[8];
+	int				cachetype;
 };
 
 struct nfsd4_compoundres {
···
 nfsd4_release_lockowner(struct svc_rqst *rqstp,
 		struct nfsd4_compound_state *,
 		struct nfsd4_release_lockowner *rlockowner);
-extern void nfsd4_release_compoundargs(struct nfsd4_compoundargs *);
+extern int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp);
 extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
 		struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
 extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
 			  struct nfsd4_compound_state *, clientid_t *clid);
+extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
+		struct nfsd4_compound_state *, struct nfsd4_test_stateid *test_stateid);
+extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
+		struct nfsd4_compound_state *, struct nfsd4_free_stateid *free_stateid);
 #endif
 
 /*

include/linux/compat.h

···
 				 struct compat_timespec __user *tsp,
 				 const compat_sigset_t __user *sigmask,
 				 compat_size_t sigsetsize);
-#if (defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)) && \
-	!defined(CONFIG_NFSD_DEPRECATED)
-union compat_nfsctl_res;
-struct compat_nfsctl_arg;
-asmlinkage long compat_sys_nfsservctl(int cmd,
-				      struct compat_nfsctl_arg __user *arg,
-				      union compat_nfsctl_res __user *res);
-#else
 asmlinkage long compat_sys_nfsservctl(int cmd, void *notused, void *notused2);
-#endif
 asmlinkage long compat_sys_signalfd4(int ufd,
 				     const compat_sigset_t __user *sigmask,
 				     compat_size_t sigsetsize, int flags);

include/linux/fs.h

···
 };
 
 struct lock_manager_operations {
-	int (*fl_compare_owner)(struct file_lock *, struct file_lock *);
-	void (*fl_notify)(struct file_lock *);	/* unblock callback */
-	int (*fl_grant)(struct file_lock *, struct file_lock *, int);
-	void (*fl_release_private)(struct file_lock *);
-	void (*fl_break)(struct file_lock *);
-	int (*fl_change)(struct file_lock **, int);
+	int (*lm_compare_owner)(struct file_lock *, struct file_lock *);
+	void (*lm_notify)(struct file_lock *);	/* unblock callback */
+	int (*lm_grant)(struct file_lock *, struct file_lock *, int);
+	void (*lm_release_private)(struct file_lock *);
+	void (*lm_break)(struct file_lock *);
+	int (*lm_change)(struct file_lock **, int);
 };
 
 struct lock_manager {

include/linux/nfsd/export.h

···
 int			nfsd_export_init(void);
 void			nfsd_export_shutdown(void);
 void			nfsd_export_flush(void);
-void			exp_readlock(void);
-void			exp_readunlock(void);
 struct svc_export *	rqst_exp_get_by_name(struct svc_rqst *,
 					     struct path *);
 struct svc_export *	rqst_exp_parent(struct svc_rqst *,

include/linux/sunrpc/cache.h

···
 	return rv - boot.tv_sec;
 }
 
-#ifdef CONFIG_NFSD_DEPRECATED
-static inline void sunrpc_invalidate(struct cache_head *h,
-				     struct cache_detail *detail)
-{
-	h->expiry_time = seconds_since_boot() - 1;
-	detail->nextcheck = seconds_since_boot();
-}
-#endif /* CONFIG_NFSD_DEPRECATED */
-
 #endif /*  _LINUX_SUNRPC_CACHE_H_ */

include/linux/sunrpc/svc.h

···
 	/* Catering to nfsd */
 	struct auth_domain *	rq_client;	/* RPC peer info */
 	struct auth_domain *	rq_gssclient;	/* "gss/"-style peer info */
+	int			rq_cachetype;
 	struct svc_cacherep *	rq_cacherep;	/* cache info */
 	int			rq_splice_ok;   /* turned off in gss privacy
 						 * to prevent encrypting page

net/sunrpc/auth_gss/gss_krb5_mech.c

···
 	},
 };
 
+MODULE_ALIAS("rpc-auth-gss-krb5");
+MODULE_ALIAS("rpc-auth-gss-krb5i");
+MODULE_ALIAS("rpc-auth-gss-krb5p");
+MODULE_ALIAS("rpc-auth-gss-390003");
+MODULE_ALIAS("rpc-auth-gss-390004");
+MODULE_ALIAS("rpc-auth-gss-390005");
+
 static struct gss_api_mech gss_kerberos_mech = {
 	.gm_name	= "krb5",
 	.gm_owner	= THIS_MODULE,

net/sunrpc/auth_gss/gss_mech_switch.c

···
 EXPORT_SYMBOL_GPL(gss_mech_get);
 
 struct gss_api_mech *
-gss_mech_get_by_name(const char *name)
+_gss_mech_get_by_name(const char *name)
 {
 	struct gss_api_mech	*pos, *gm = NULL;
 
···
 
 }
 
+struct gss_api_mech * gss_mech_get_by_name(const char *name)
+{
+	struct gss_api_mech *gm = NULL;
+
+	gm = _gss_mech_get_by_name(name);
+	if (!gm) {
+		request_module("rpc-auth-gss-%s", name);
+		gm = _gss_mech_get_by_name(name);
+	}
+	return gm;
+}
 EXPORT_SYMBOL_GPL(gss_mech_get_by_name);
 
 struct gss_api_mech *
···
 	return 0;
 }
 
-struct gss_api_mech *
-gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
+struct gss_api_mech *_gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
 {
-	struct gss_api_mech *pos, *gm = NULL;
+	struct gss_api_mech *gm = NULL, *pos;
 
 	spin_lock(&registered_mechs_lock);
 	list_for_each_entry(pos, &registered_mechs, gm_list) {
···
 		break;
 	}
 	spin_unlock(&registered_mechs_lock);
+	return gm;
+}
+
+struct gss_api_mech *
+gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
+{
+	struct gss_api_mech *gm;
+
+	gm = _gss_mech_get_by_pseudoflavor(pseudoflavor);
+
+	if (!gm) {
+		request_module("rpc-auth-gss-%u", pseudoflavor);
+		gm = _gss_mech_get_by_pseudoflavor(pseudoflavor);
+	}
 	return gm;
 }
 

net/sunrpc/svc_xprt.c

···
 	if (!test_and_set_bit(XPT_DETACHED, &xprt->xpt_flags))
 		list_del_init(&xprt->xpt_list);
 	/*
-	 * We used to delete the transport from whichever list
-	 * it's sk_xprt.xpt_ready node was on, but we don't actually
-	 * need to.  This is because the only time we're called
-	 * while still attached to a queue, the queue itself
-	 * is about to be destroyed (in svc_destroy).
+	 * The only time we're called while xpt_ready is still on a list
+	 * is while the list itself is about to be destroyed (in
+	 * svc_destroy).  BUT svc_xprt_enqueue could still be attempting
+	 * to add new entries to the sp_sockets list, so we can't leave
+	 * a freed xprt on it.
 	 */
+	list_del_init(&xprt->xpt_ready);
 	if (test_bit(XPT_TEMP, &xprt->xpt_flags))
 		serv->sv_tmpcnt--;
 	spin_unlock_bh(&serv->sv_lock);

net/sunrpc/svcauth_unix.c

···
 
 struct unix_domain {
 	struct auth_domain	h;
-#ifdef CONFIG_NFSD_DEPRECATED
-	int	addr_changes;
-#endif /* CONFIG_NFSD_DEPRECATED */
 	/* other stuff later */
 };
 
+extern struct auth_ops svcauth_null;
 extern struct auth_ops svcauth_unix;
 
 static void svcauth_unix_domain_release(struct auth_domain *dom)
···
 			return NULL;
 		}
 		new->h.flavour = &svcauth_unix;
-#ifdef CONFIG_NFSD_DEPRECATED
-		new->addr_changes = 0;
-#endif /* CONFIG_NFSD_DEPRECATED */
 		rv = auth_domain_lookup(name, &new->h);
 	}
 }
···
 	char			m_class[8]; /* e.g. "nfsd" */
 	struct in6_addr		m_addr;
 	struct unix_domain	*m_client;
-#ifdef CONFIG_NFSD_DEPRECATED
-	int			m_add_change;
-#endif /* CONFIG_NFSD_DEPRECATED */
 };
 
 static void ip_map_put(struct kref *kref)
···
 
 	kref_get(&item->m_client->h.ref);
 	new->m_client = item->m_client;
-#ifdef CONFIG_NFSD_DEPRECATED
-	new->m_add_change = item->m_add_change;
-#endif /* CONFIG_NFSD_DEPRECATED */
 }
 static struct cache_head *ip_map_alloc(void)
 {
···
 	ip.h.flags = 0;
 	if (!udom)
 		set_bit(CACHE_NEGATIVE, &ip.h.flags);
-#ifdef CONFIG_NFSD_DEPRECATED
-	else {
-		ip.m_add_change = udom->addr_changes;
-		/* if this is from the legacy set_client system call,
-		 * we need m_add_change to be one higher
-		 */
-		if (expiry == NEVER)
-			ip.m_add_change++;
-	}
-#endif /* CONFIG_NFSD_DEPRECATED */
 	ip.h.expiry_time = expiry;
 	ch = sunrpc_cache_update(cd, &ip.h, &ipm->h,
 				 hash_str(ipm->m_class, IP_HASHBITS) ^
···
 	return __ip_map_update(sn->ip_map_cache, ipm, udom, expiry);
 }
 
-#ifdef CONFIG_NFSD_DEPRECATED
-int auth_unix_add_addr(struct net *net, struct in6_addr *addr, struct auth_domain *dom)
-{
-	struct unix_domain *udom;
-	struct ip_map *ipmp;
-
-	if (dom->flavour != &svcauth_unix)
-		return -EINVAL;
-	udom = container_of(dom, struct unix_domain, h);
-	ipmp = ip_map_lookup(net, "nfsd", addr);
-
-	if (ipmp)
-		return ip_map_update(net, ipmp, udom, NEVER);
-	else
-		return -ENOMEM;
-}
-EXPORT_SYMBOL_GPL(auth_unix_add_addr);
-
-int auth_unix_forget_old(struct auth_domain *dom)
-{
-	struct unix_domain *udom;
-
-	if (dom->flavour != &svcauth_unix)
-		return -EINVAL;
-	udom = container_of(dom, struct unix_domain, h);
-	udom->addr_changes++;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auth_unix_forget_old);
-
-struct auth_domain *auth_unix_lookup(struct net *net, struct in6_addr *addr)
-{
-	struct ip_map *ipm;
-	struct auth_domain *rv;
-	struct sunrpc_net *sn;
-
-	sn = net_generic(net, sunrpc_net_id);
-	ipm = ip_map_lookup(net, "nfsd", addr);
-
-	if (!ipm)
-		return NULL;
-	if (cache_check(sn->ip_map_cache, &ipm->h, NULL))
-		return NULL;
-
-	if ((ipm->m_client->addr_changes - ipm->m_add_change) >0) {
-		sunrpc_invalidate(&ipm->h, sn->ip_map_cache);
-		rv = NULL;
-	} else {
-		rv = &ipm->m_client->h;
-		kref_get(&rv->ref);
-	}
-	cache_put(&ipm->h, sn->ip_map_cache);
-	return rv;
-}
-EXPORT_SYMBOL_GPL(auth_unix_lookup);
-#endif /* CONFIG_NFSD_DEPRECATED */
 
 void svcauth_unix_purge(void)
 {

net/sunrpc/svcsock.c

···
 #include <linux/sunrpc/stats.h>
 #include <linux/sunrpc/xprt.h>
 
+#include "sunrpc.h"
+
 #define RPCDBG_FACILITY	RPCDBG_SVCXPRT