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| author |   Elena Reshetova <elena.reshetova@intel.com> | 2017-03-17 14:10:27 +0200 |
|---|---|---|
| committer |   Ilya Dryomov <idryomov@gmail.com> | 2017-05-04 09:19:18 +0200 |
| commit | 06dfa96399a9a3280dd81e47f8696aa89f1783e7 (patch) | |
| tree | 1f5b529b617e1607087e096be6640b0208ec54aa /include/linux/ceph/libceph.h | |
| parent | ceph: convert ceph_cap_snap.nref from atomic_t to refcount_t (diff) | |
| download | linux-dev-06dfa96399a9a3280dd81e47f8696aa89f1783e7.tar.xz linux-dev-06dfa96399a9a3280dd81e47f8696aa89f1783e7.zip | |
libceph: convert ceph_snap_context.nref 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>
Diffstat (limited to 'include/linux/ceph/libceph.h')
| -rw-r--r-- | include/linux/ceph/libceph.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index cecbf5a26e5a..3229ae6c7846 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -14,6 +14,7 @@ #include <linux/wait.h> #include <linux/writeback.h> #include <linux/slab.h> +#include <linux/refcount.h> #include <linux/ceph/types.h> #include <linux/ceph/messenger.h> @@ -161,7 +162,7 @@ struct ceph_client { * dirtied. */ struct ceph_snap_context { - atomic_t nref; + refcount_t nref; u64 seq; u32 num_snaps; u64 snaps[]; |