nfs: track whether server sets MAY_NOTIFY_LOCK flag
We want to handle the two cases differently, such that we poll more
aggressively when we don't expect a callback.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 0aac0fb..93cf38e 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2537,6 +2537,8 @@
goto out;
if (server->caps & NFS_CAP_POSIX_LOCK)
set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
+ if (opendata->o_res.rflags & NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK)
+ set_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags);
dentry = opendata->dentry;
if (d_really_is_negative(dentry)) {