ceph: drop unconnected inodes

Positve dentry and corresponding inode are always accompanied in MDS reply.
So no need to keep inode in the cache after dropping all its aliases.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Sage Weil <sage@inktank.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 278fd2891288..d37b2dc01d3f 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -436,6 +436,16 @@ void ceph_destroy_inode(struct inode *inode)
         call_rcu(&inode->i_rcu, ceph_i_callback);
 }
 
+int ceph_drop_inode(struct inode *inode)
+{
+        /*
+         * Positve dentry and corresponding inode are always accompanied
+         * in MDS reply. So no need to keep inode in the cache after
+         * dropping all its aliases.
+         */
+        return 1;
+}
+
 /*
  * Helpers to fill in size, ctime, mtime, and atime.  We have to be
  * careful because either the client or MDS may have more up to date