NFS: remove incorrect "Lock reclaim failed!" warning.

After reclaiming state that was lost, the NFS client tries to reclaim
any locks, and then checks that each one has NFS_LOCK_INITIALIZED set
(which means that the server has confirmed the lock).
However if the client holds a delegation, nfs_reclaim_locks() simply aborts
(or more accurately it called nfs_lock_reclaim() and that returns without
doing anything).

This is because when a delegation is held, the server doesn't need to
know about locks.

So if a delegation is held, NFS_LOCK_INITIALIZED is not expected, and
its absence is certainly not an error.

So don't print the warnings if NFS_DELGATED_STATE is set.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 9 insertions, 7 deletions

diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 6818964bb7c0..25b7cf6a91d9 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1415,14 +1415,16 @@ restart:
                 if (status >= 0) {
                         status = nfs4_reclaim_locks(state, ops);
                         if (status >= 0) {
-                                spin_lock(&state->state_lock);
-                                list_for_each_entry(lock, &state->lock_states, ls_locks) {
-                                        if (!test_bit(NFS_LOCK_INITIALIZED, &lock->ls_flags))
-                                                pr_warn_ratelimited("NFS: "
-                                                        "%s: Lock reclaim "
-                                                        "failed!\n", __func__);
+                                if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) {
+                                        spin_lock(&state->state_lock);
+                                        list_for_each_entry(lock, &state->lock_states, ls_locks) {
+                                                if (!test_bit(NFS_LOCK_INITIALIZED, &lock->ls_flags))
+                                                        pr_warn_ratelimited("NFS: "
+                                                                            "%s: Lock reclaim "
+                                                                            "failed!\n", __func__);
+                                        }
+                                        spin_unlock(&state->state_lock);
                                 }
-                                spin_unlock(&state->state_lock);
                                 nfs4_put_open_state(state);
                                 spin_lock(&sp->so_lock);
                                 goto restart;