tree 82927817ebd1d9d064a2278d42f8b999b2ac7fe4
parent fd36a71762f3b0fcb9741ed24021afabec7e0c45
author Jeff Layton <jlayton@redhat.com> 1481809078 -0500
committer Ilya Dryomov <idryomov@gmail.com> 1487589365 +0100

ceph: fix unsafe dcache access in ceph_encode_dentry_release

Accessing d_parent requires some sort of locking or it could vanish
out from under us. Since we take the d_lock anyway, use that to fetch
d_parent and take a reference to it, and then use that reference to
call ceph_encode_inode_release.

Link: http://tracker.ceph.com/issues/18148
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>