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Commit b8c2f3ae authored May 31, 2013 by Yan, Zheng Committed by Sage Weil Jul 03, 2013

ceph: check migrate seq before changing auth cap



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@intel.com>
Reviewed-by: Sage Weil <sage@inktank.com>

parent fc2744aa

fs/ceph/caps.c

+5 −3

Original line number	Diff line number	Diff line
		@@ -612,9 +612,11 @@ retry:
		__cap_delay_requeue(mdsc, ci);
		}

		if (flags & CEPH_CAP_FLAG_AUTH)
		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) {
		} 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)) {