ceph: only release unused caps with mds requests

[safe/jmp/linux-2.6] / fs / ceph / caps.c

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index d9e860f..7d0a0d0 100644 (file)
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -2836,11 +2836,18 @@ int ceph_encode_inode_release(void **p, struct inode *inode,
        struct ceph_cap *cap;
        struct ceph_mds_request_release *rel = *p;
        int ret = 0;
-
-       dout("encode_inode_release %p mds%d drop %s unless %s\n", inode,
-            mds, ceph_cap_string(drop), ceph_cap_string(unless));
+       int used = 0;
 
        spin_lock(&inode->i_lock);
+       used = __ceph_caps_used(ci);
+
+       dout("encode_inode_release %p mds%d used %s drop %s unless %s\n", inode,
+            mds, ceph_cap_string(used), ceph_cap_string(drop),
+            ceph_cap_string(unless));
+
+       /* only drop unused caps */
+       drop &= ~used;
+
        cap = __get_cap_for_mds(ci, mds);
        if (cap && __cap_is_valid(cap)) {
                if (force ||