libceph: convert ceph_pagelist.refcnt from atomic_t to refcount_t
authorElena Reshetova <elena.reshetova@intel.com>
Fri, 17 Mar 2017 12:10:29 +0000 (14:10 +0200)
committerIlya Dryomov <idryomov@gmail.com>
Thu, 4 May 2017 07:19:19 +0000 (09:19 +0200)
commit0e1a5ee6577e43e5be55369d398107080b360941
treecb477c8e45675979e72a53013290e69e462f9ef1
parent02113a0f14e20bd8e675d7cec16db6eaaf2b2380
libceph: convert ceph_pagelist.refcnt from atomic_t to refcount_t

refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
fs/ceph/mds_client.c
include/linux/ceph/pagelist.h
net/ceph/pagelist.c