fs: remove simple_nosetlease()

Setting ->setlease() to a NULL pointer now has the same effect as
setting it to simple_nosetlease(). Remove all of the setlease
file_operations that are set to simple_nosetlease, and the function
itself.

Signed-off-by: Jeff Layton <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Acked-by: Al Viro <[e-mail]>
Acked-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Jan Kara <[e-mail]>
Signed-off-by: Christian Brauner <[e-mail]>

fs/9p/vfs_dir.c

···
 	.iterate_shared = v9fs_dir_readdir,
 	.open = v9fs_file_open,
 	.release = v9fs_dir_release,
-	.setlease = simple_nosetlease,
 };
 
 const struct file_operations v9fs_dir_operations_dotl = {
···
 	.open = v9fs_file_open,
 	.release = v9fs_dir_release,
 	.fsync = v9fs_file_fsync_dotl,
-	.setlease = simple_nosetlease,
 };

fs/9p/vfs_file.c

···
 	.splice_read = v9fs_file_splice_read,
 	.splice_write = iter_file_splice_write,
 	.fsync = v9fs_file_fsync,
-	.setlease = simple_nosetlease,
 };
 
 const struct file_operations v9fs_file_operations_dotl = {
···
 	.splice_read = v9fs_file_splice_read,
 	.splice_write = iter_file_splice_write,
 	.fsync = v9fs_file_fsync_dotl,
-	.setlease = simple_nosetlease,
 };

fs/ceph/dir.c

···
 	.fsync = ceph_fsync,
 	.lock = ceph_lock,
 	.flock = ceph_flock,
-	.setlease = simple_nosetlease,
 };
 
 const struct file_operations ceph_snapdir_fops = {
···
 	.llseek = ceph_dir_llseek,
 	.open = ceph_open,
 	.release = ceph_release,
-	.setlease = simple_nosetlease,
 };
 
 const struct inode_operations ceph_dir_iops = {

fs/ceph/file.c

···
 	.mmap_prepare = ceph_mmap_prepare,
 	.fsync = ceph_fsync,
 	.lock = ceph_lock,
-	.setlease = simple_nosetlease,
 	.flock = ceph_flock,
 	.splice_read = ceph_splice_read,
 	.splice_write = iter_file_splice_write,

fs/fuse/dir.c

···
 	.fsync		= fuse_dir_fsync,
 	.unlocked_ioctl	= fuse_dir_ioctl,
 	.compat_ioctl	= fuse_dir_compat_ioctl,
-	.setlease	= simple_nosetlease,
 };
 
 static const struct inode_operations fuse_common_inode_operations = {

fs/gfs2/file.c

···
 	.flock		= gfs2_flock,
 	.splice_read	= copy_splice_read,
 	.splice_write	= gfs2_file_splice_write,
-	.setlease	= simple_nosetlease,
 	.fallocate	= gfs2_fallocate,
 	.fop_flags	= FOP_ASYNC_LOCK,
 };
···
 	.lock		= gfs2_lock,
 	.flock		= gfs2_flock,
 	.llseek		= default_llseek,
-	.setlease	= simple_nosetlease,
 	.fop_flags	= FOP_ASYNC_LOCK,
 };
 

fs/libfs.c

···
 EXPORT_SYMBOL(alloc_anon_inode);
 
 /**
- * simple_nosetlease - generic helper for prohibiting leases
- * @filp: file pointer
- * @arg: type of lease to obtain
- * @flp: new lease supplied for insertion
- * @priv: private data for lm_setup operation
- *
- * Generic helper for filesystems that do not wish to allow leases to be set.
- * All arguments are ignored and it just returns -EINVAL.
- */
-int
-simple_nosetlease(struct file *filp, int arg, struct file_lease **flp,
-		  void **priv)
-{
-	return -EINVAL;
-}
-EXPORT_SYMBOL(simple_nosetlease);
-
-/**
  * simple_get_link - generic helper to get the target of "fast" symlinks
  * @dentry: not used here
  * @inode: the symlink inode

fs/nfs/dir.c

···
 	.open		= nfs_opendir,
 	.release	= nfs_closedir,
 	.fsync		= nfs_fsync_dir,
-	.setlease	= simple_nosetlease,
 };
 
 const struct address_space_operations nfs_dir_aops = {

fs/nfs/file.c

···
 	.splice_read	= nfs_file_splice_read,
 	.splice_write	= iter_file_splice_write,
 	.check_flags	= nfs_check_flags,
-	.setlease	= simple_nosetlease,
 	.fop_flags	= FOP_DONTCACHE,
 };
 EXPORT_SYMBOL_GPL(nfs_file_operations);

fs/smb/client/cifsfs.c

···
 	.remap_file_range = cifs_remap_file_range,
 	.llseek = generic_file_llseek,
 	.fsync = cifs_dir_fsync,
-	.setlease = simple_nosetlease,
 };
 
 static void

fs/vboxsf/dir.c

···
 	.release = vboxsf_dir_release,
 	.read = generic_read_dir,
 	.llseek = generic_file_llseek,
-	.setlease = simple_nosetlease,
 };
 
 /*

fs/vboxsf/file.c

···
 	.release = vboxsf_file_release,
 	.fsync = noop_fsync,
 	.splice_read = filemap_splice_read,
-	.setlease = simple_nosetlease,
 };
 
 const struct inode_operations vboxsf_reg_iops = {

include/linux/fs.h

···
 extern struct inode *alloc_anon_inode(struct super_block *);
 struct inode *anon_inode_make_secure_inode(struct super_block *sb, const char *name,
 					   const struct inode *context_inode);
-extern int simple_nosetlease(struct file *, int, struct file_lease **, void **);
 
 extern struct dentry *simple_lookup(struct inode *, struct dentry *, unsigned int flags);
 extern ssize_t generic_read_dir(struct file *, char __user *, size_t, loff_t *);