NFSv4: Ensure asynchronous open() calls always pin the mountpoint

A number of race conditions may currently ensue if the user presses ^C
and then unmounts the partition while an asynchronous open() is in
progress.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index c27258b5d3e1..4948ec1dd9bd 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1244,7 +1244,7 @@ static int nfs_create(struct inode *dir, struct dentry *dentry, int mode,
         attr.ia_mode = mode;
         attr.ia_valid = ATTR_MODE;
 
-        if (nd && (nd->flags & LOOKUP_CREATE))
+        if ((nd->flags & LOOKUP_CREATE) != 0)
                 open_flags = nd->intent.open.flags;
 
         lock_kernel();