ceph: quota: cache inode pointer in ceph_snap_realm

Keep a pointer to the inode in struct ceph_snap_realm.  This allows to
optimize functions that walk the realms hierarchy (e.g. in quotas).

Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index e4ff485d24c7..8217abf46182 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -755,6 +755,7 @@ struct ceph_readdir_cache_control {
  */
 struct ceph_snap_realm {
 	u64 ino;
+	struct inode *inode;
 	atomic_t nref;
 	struct rb_node node;