diff options
| author | Elena Reshetova <elena.reshetova@intel.com> | 2017-03-03 11:55:18 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-04-18 15:07:23 +0300 |
| commit | 0700cea7c8b387c8c6bc4de79b197baa0b3fc4a3 (patch) | |
| tree | 7bec132f997899bc7000ed108d539067438fd21f /fs/btrfs/ctree.h | |
| parent | 089e77e10d7e44a007101cf7323dc7bda66172f4 (diff) | |
| download | linux-0700cea7c8b387c8c6bc4de79b197baa0b3fc4a3.tar.xz | |
btrfs: convert btrfs_root.refs 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: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index cdfc2a46448b..285566cc2f7d 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1222,7 +1222,7 @@ struct btrfs_root { dev_t anon_dev; spinlock_t root_item_lock; - atomic_t refs; + refcount_t refs; struct mutex delalloc_mutex; spinlock_t delalloc_lock; |