NFSv4: Fix up locking for nfs4_state_owner

 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 2d9357cf3fc5..9c1da34036aa 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -212,6 +212,7 @@ static void update_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid,
 
         open_flags &= (FMODE_READ|FMODE_WRITE);
         /* Protect against nfs4_find_state() */
+        spin_lock(&state->owner->so_lock);
         spin_lock(&inode->i_lock);
         state->state |= open_flags;
         /* NB! List reordering - see the reclaim code for why.  */
@@ -221,6 +222,7 @@ static void update_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid,
                 state->nreaders++;
         memcpy(&state->stateid, stateid, sizeof(state->stateid));
         spin_unlock(&inode->i_lock);
+        spin_unlock(&state->owner->so_lock);
 }
 
 /*