From: "Yan, Zheng" <zheng.z....@intel.com>
MDS ignores cap update message if migrate_seq mismatch, so when
receiving a cap import message with higher migrate_seq, set mds_want
according to the cap import message.
Signed-off-by: Yan, Zheng <zheng.z....@intel.com>
---
fs/ceph/caps.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 5d5c32b..61f3833 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -553,6 +553,7 @@ retry:
cap->implemented = 0;
cap->mds = mds;
cap->mds_wanted = 0;
+ cap->mseq = 0;
cap->ci = ci;
__insert_cap_node(ci, cap);
@@ -628,7 +629,10 @@ retry:
cap->cap_id = cap_id;
cap->issued = issued;
cap->implemented |= issued;
- cap->mds_wanted |= wanted;
+ if (mseq > cap->mseq)
+ cap->mds_wanted = wanted;
+ else
+ cap->mds_wanted |= wanted;
cap->seq = seq;
cap->issue_seq = seq;
cap->mseq = mseq;
--
1.7.11.7
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