fuse: rcu-delay freeing fuse_conn

makes ->permission() and ->d_revalidate() safety in RCU mode independent
from vfsmount_lock.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index fe446c222e3f..4715674f050c 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -377,6 +377,8 @@ struct fuse_conn {
         /** Refcount */
         atomic_t count;
 
+        struct rcu_head rcu;
+
         /** The user id for this mount */
         kuid_t user_id;