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>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index 570c8a1d2f3d..41db5258e7a7 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -127,13 +127,13 @@ static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp,
                                 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);