[PATCH 004/115] nfsd: don't run get_file if nfs4_preprocess_stateid_op return error

[Luis Henriques]

3.5.7.13 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: fanchaoting <fanchaoting at cn.fujitsu.com>

commit b022032e195ffca83d7002d6b84297d796ed443b upstream.

we should return error status directly when nfs4_preprocess_stateid_op
return error.

Signed-off-by: fanchaoting <fanchaoting at cn.fujitsu.com>
Signed-off-by: J. Bruce Fields <bfields at redhat.com>
[ luis: adjust context ]
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 fs/nfsd/nfs4proc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index dd0308d..7e97d93 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -893,14 +893,14 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
 	nfs4_lock_state();
 	status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
-	if (filp)
-		get_file(filp);
-	nfs4_unlock_state();
-
 	if (status) {
+		nfs4_unlock_state();
 		dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
 		return status;
 	}
+	if (filp)
+		get_file(filp);
+	nfs4_unlock_state();
 
 	cnt = write->wr_buflen;
 	write->wr_how_written = write->wr_stable_how;
-- 
1.8.1.2