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ceph: Hold caps_list_lock when adjusting caps_{use, total}_count
author
Yan, Zheng
<zheng.z.yan@intel.com>
Sat, 3 Nov 2012 02:32:37 +0000
(10:32 +0800)
committer
Sage Weil
<sage@inktank.com>
Sun, 4 Nov 2012 11:08:24 +0000
(
03:08
-0800)
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Sage Weil <sage@inktank.com>
fs/ceph/caps.c
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diff --git
a/fs/ceph/caps.c
b/fs/ceph/caps.c
index
3251e9c
..
2d0141e
100644
(file)
--- 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;
}