Commit fa0aa3b8 authored Aug 28, 2017 by Yan, Zheng Committed by Ilya Dryomov Sep 06, 2017

ceph: fix message order check in handle_cap_export()



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>

parent c858a070

fs/ceph/caps.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -3427,7 +3427,7 @@ static void handle_cap_export(struct inode inode, struct ceph_mds_caps ex,
		tcap = __get_cap_for_mds(ci, target);
		if (tcap) {
		/* 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) {
		dout(" updating import cap %p mds%d\n", tcap, target);
		tcap->cap_id = t_cap_id;