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| author | Elena Reshetova <elena.reshetova@intel.com> | 2017-03-03 09:55:13 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-04-18 14:07:23 +0200 |
| commit | e76edab7f059bc1047c1865141e2709d70e74852 (patch) | |
| tree | 3769b9d48f59afa32d2e1be3ddce00508abcfb68 /fs/btrfs/ordered-data.h | |
| parent | btrfs: convert extent_map.refs from atomic_t to refcount_t (diff) | |
| download | linux-e76edab7f059bc1047c1865141e2709d70e74852.tar.xz linux-e76edab7f059bc1047c1865141e2709d70e74852.zip | |
btrfs: convert btrfs_ordered_extent.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/ordered-data.h')
| -rw-r--r-- | fs/btrfs/ordered-data.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h index 195c93b67fe0..e0c1d5b8d859 100644 --- a/fs/btrfs/ordered-data.h +++ b/fs/btrfs/ordered-data.h @@ -113,7 +113,7 @@ struct btrfs_ordered_extent { int compress_type; /* reference count */ - atomic_t refs; + refcount_t refs; /* the inode we belong to */ struct inode *inode; |