[v3,5/5] nfsd: set the MAY_NOTIFY_LOCK flag in OPEN replies
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Message ID 1474057707-31286-6-git-send-email-jlayton@redhat.com
State New
Headers show

Commit Message

Jeff Layton Sept. 16, 2016, 8:28 p.m. UTC
If we are using v4.1+, then we can send notification when contended
locks become free. Inform the client of that fact.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
---
 fs/nfsd/nfs4state.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Patch
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diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 6c74d9a45163..4062f4fbfc6d 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4490,9 +4490,11 @@  out:
 	* To finish the open response, we just need to set the rflags.
 	*/
 	open->op_rflags = NFS4_OPEN_RESULT_LOCKTYPE_POSIX;
-	if (!(open->op_openowner->oo_flags & NFS4_OO_CONFIRMED) &&
-	    !nfsd4_has_session(&resp->cstate))
+	if (nfsd4_has_session(&resp->cstate))
+		open->op_rflags |= NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK;
+	else if (!(open->op_openowner->oo_flags & NFS4_OO_CONFIRMED))
 		open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM;
+
 	if (dp)
 		nfs4_put_stid(&dp->dl_stid);
 	if (stp)