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ceph: fix message order check in handle_cap_export()

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If caps for importer mds exists, but cap id mismatch, client should
have received corresponding import message. Because cap ID does not
change as long as client holds the caps.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Yan, Zheng 2017-08-28 15:07:42 +08:00 • committed by Ilya Dryomov
parent c858a0709f
commit fa0aa3b839
1 changed files with 1 additions and 1 deletions
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2
fs/ceph/caps.c
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@ -3427,7 +3427,7 @@ retry:
tcap = __get_cap_for_mds(ci, target); tcap = __get_cap_for_mds(ci, target);
if (tcap) { if (tcap) {
/* already have caps from the target */ /* already have caps from the target */
if (tcap->cap_id != t_cap_id || if (tcap->cap_id == t_cap_id &&
ceph_seq_cmp(tcap->seq, t_seq) < 0) { ceph_seq_cmp(tcap->seq, t_seq) < 0) {
dout(" updating import cap %p mds%d\n", tcap, target); dout(" updating import cap %p mds%d\n", tcap, target);
tcap->cap_id = t_cap_id; tcap->cap_id = t_cap_id;