locks: consolidate "nolease" routines

GFS2 and NFS have setlease routines that always just return -EINVAL.
Turn that into a generic routine that can live in fs/libfs.c.

Cc: <linux-nfs@vger.kernel.org>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: <cluster-devel@redhat.com>
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Acked-by: Trond Myklebust <trond.myklebust@primarydata.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

1 files changed, 1 insertions, 21 deletions

diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 26b3f952e6b1..2c02478a86b0 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -913,26 +913,6 @@ out_uninit:
 #ifdef CONFIG_GFS2_FS_LOCKING_DLM
 
 /**
- * gfs2_setlease - acquire/release a file lease
- * @file: the file pointer
- * @arg: lease type
- * @fl: file lock
- *
- * We don't currently have a way to enforce a lease across the whole
- * cluster; until we do, disable leases (by just returning -EINVAL),
- * unless the administrator has requested purely local locking.
- *
- * Locking: called under i_lock
- *
- * Returns: errno
- */
-
-static int gfs2_setlease(struct file *file, long arg, struct file_lock **fl)
-{
-        return -EINVAL;
-}
-
-/**
  * gfs2_lock - acquire/release a posix lock on a file
  * @file: the file pointer
  * @cmd: either modify or retrieve lock state, possibly wait
@@ -1069,7 +1049,7 @@ const struct file_operations gfs2_file_fops = {
         .flock          = gfs2_flock,
         .splice_read    = generic_file_splice_read,
         .splice_write   = iter_file_splice_write,
-        .setlease       = gfs2_setlease,
+        .setlease       = simple_nosetlease,
         .fallocate      = gfs2_fallocate,
 };