NFSv4.1: Minor optimisation in get_layout_by_fh_locked()
If the filehandles match, but the igrab() fails, or the layout is
freed before we can get it, then just return NULL.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index 570c8a1..41db525 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -127,13 +127,13 @@
continue;
ino = igrab(lo->plh_inode);
if (!ino)
- continue;
+ break;
spin_lock(&ino->i_lock);
/* Is this layout in the process of being freed? */
if (NFS_I(ino)->layout != lo) {
spin_unlock(&ino->i_lock);
iput(ino);
- continue;
+ break;
}
pnfs_get_layout_hdr(lo);
spin_unlock(&ino->i_lock);
