ceph: Hold caps_list_lock when adjusting caps_{use, total}_count

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Sage Weil <sage@inktank.com>
git-mirror · Nov 4, 2012 · 4d1d053 · 4d1d053
1 parent 9e15b77
commit 4d1d053
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
@@ -236,8 +236,10 @@ static struct ceph_cap *get_cap(struct ceph_mds_client *mdsc,
 	if (!ctx) {
 		cap = kmem_cache_alloc(ceph_cap_cachep, GFP_NOFS);
 		if (cap) {
+			spin_lock(&mdsc->caps_list_lock);
 			mdsc->caps_use_count++;
 			mdsc->caps_total_count++;
+			spin_unlock(&mdsc->caps_list_lock);
 		}
 		return cap;
 	}