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ceph: add global total_caps to count the mdsc's total caps number

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This will help to reduce using the global mdsc->mutex lock in many
places.

Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Xiubo Li
2020-06-30 03:52:16 -04:00
committed by Ilya Dryomov
parent 3e699bd865
commit 4f1d756def
5 changed files with 7 additions and 12 deletions
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fs/ceph/mds_client.c
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@@ -1485,6 +1485,7 @@ int ceph_iterate_session_caps(struct ceph_mds_session *session,
cap->session = NULL;
list_del_init(&cap->session_caps);
session->s_nr_caps--;
atomic64_dec(&session->s_mdsc->metric.total_caps);
if (cap->queue_release)
__ceph_queue_cap_release(session, cap);
else