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-rw-r--r--fs/ceph/snap.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c
index bf2a5f3846a..e6f9bc57d47 100644
--- a/fs/ceph/snap.c
+++ b/fs/ceph/snap.c
@@ -1,6 +1,7 @@
#include "ceph_debug.h"
#include <linux/sort.h>
+#include <linux/slab.h>
#include "super.h"
#include "decode.h"
@@ -314,9 +315,9 @@ static int build_snap_context(struct ceph_snap_realm *realm)
because we rebuild_snap_realms() works _downward_ in
hierarchy after each update.) */
if (realm->cached_context &&
- realm->cached_context->seq <= realm->seq &&
+ realm->cached_context->seq == realm->seq &&
(!parent ||
- realm->cached_context->seq <= parent->cached_context->seq)) {
+ realm->cached_context->seq >= parent->cached_context->seq)) {
dout("build_snap_context %llx %p: %p seq %lld (%d snaps)"
" (unchanged)\n",
realm->ino, realm, realm->cached_context,
@@ -818,7 +819,9 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
* queued (again) by ceph_update_snap_trace()
* below. Queue it _now_, under the old context.
*/
+ spin_lock(&realm->inodes_with_caps_lock);
list_del_init(&ci->i_snap_realm_item);
+ spin_unlock(&realm->inodes_with_caps_lock);
spin_unlock(&inode->i_lock);
ceph_queue_cap_snap(ci,