fuse: don't check_submounts_and_drop() in RCU walk

If revalidate finds an invalid dentry in RCU walk mode, let the VFS deal
with it instead of calling check_submounts_and_drop() which is not prepared
for being called from RCU walk.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: stable@vger.kernel.org

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 62b43b577bfce40b116a7a8eb77a91cea1c8b7b4..9b16806f11dad2e296b5864455c8f47e6998bb94 100644 (file)
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -259,7 +259,8 @@ out:
 
 invalid:
        ret = 0;
-       if (check_submounts_and_drop(entry) != 0)
+
+       if (!(flags & LOOKUP_RCU) && check_submounts_and_drop(entry) != 0)
                ret = 1;
        goto out;
 }