NFSv4: Ensure we don't corrupt fl->fl_flags in nfs4_proc_unlck

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

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 9f2759da74eb..a1069325b876 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3263,6 +3263,7 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *
         struct nfs4_lock_state *lsp;
         struct rpc_task *task;
         int status = 0;
+        unsigned char fl_flags = request->fl_flags;
 
         status = nfs4_set_lock_state(state, request);
         /* Unlock _before_ we do the RPC call */
@@ -3286,6 +3287,7 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *
         status = nfs4_wait_for_completion_rpc_task(task);
         rpc_put_task(task);
 out:
+        request->fl_flags = fl_flags;
         return status;
 }