commit 2e32cf5ef2683a196df24ccd2cd2b4ed735ad9d3
author Al Viro <viro@zeniv.linux.org.uk> Thu Oct 03 12:53:37 2013 -0400
committer Al Viro <viro@zeniv.linux.org.uk> Thu Oct 24 23:43:27 2013 -0400
tree 14861a1a6e31bec8e6d46cc8facf02b71760b92d
parent baa40671d3e3b590a33b2c0e022db61cbebf5c00

cifs: rcu-delay unload_nls() and freeing sbi

makes ->d_hash(), ->d_compare() and ->permission() safety in RCU mode
independent from vfsmount_lock.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/cifs/cifs_fs_sb.h

diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index 37e4a72..9409fa1 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -65,5 +65,6 @@
 	char   *mountdata; /* options received at mount time or via DFS refs */
 	struct backing_dev_info bdi;
 	struct delayed_work prune_tlinks;
+	struct rcu_head rcu;
 };
 #endif				/* _CIFS_FS_SB_H */