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-rw-r--r--fs/ceph/mds_client.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h
index 3e67dd2169fa..db57ae98ed34 100644
--- a/fs/ceph/mds_client.h
+++ b/fs/ceph/mds_client.h
@@ -106,10 +106,13 @@ struct ceph_mds_reply_info_parsed {
/*
* cap releases are batched and sent to the MDS en masse.
+ *
+ * Account for per-message overhead of mds_cap_release header
+ * and __le32 for osd epoch barrier trailing field.
*/
-#define CEPH_CAPS_PER_RELEASE ((PAGE_SIZE - \
+#define CEPH_CAPS_PER_RELEASE ((PAGE_SIZE - sizeof(u32) - \
sizeof(struct ceph_mds_cap_release)) / \
- sizeof(struct ceph_mds_cap_item))
+ sizeof(struct ceph_mds_cap_item))
/*