From: "Yan, Zheng" <zheng.z.yan@xxxxxxxxx>
We may receive old request reply from the exporter MDS after receiving
the importer MDS' cap import message.
Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx>
---
fs/ceph/caps.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 54c290b..790f88b 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -612,9 +612,11 @@ retry:
__cap_delay_requeue(mdsc, ci);
}
- if (flags & CEPH_CAP_FLAG_AUTH)
- ci->i_auth_cap = cap;
- else if (ci->i_auth_cap == cap) {
+ if (flags & CEPH_CAP_FLAG_AUTH) {
+ if (ci->i_auth_cap == NULL ||
+ ceph_seq_cmp(ci->i_auth_cap->mseq, mseq) < 0)
+ ci->i_auth_cap = cap;
+ } else if (ci->i_auth_cap == cap) {
ci->i_auth_cap = NULL;
spin_lock(&mdsc->cap_dirty_lock);
if (!list_empty(&ci->i_dirty_item)) {
--
1.8.1.4
--
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