btrfs: convert btrfs_transaction.use_count from atomic_t to refcount_t

Browse source

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>

...

This commit is contained in:

Elena Reshetova 2017-03-03 10:55:11 +02:00 • committed by David Sterba

parent 140475ae4a

commit 9b64f57ddf

5 changed files with 16 additions and 14 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

fs/btrfs/disk-io.c

View file

2

fs/btrfs/extent-tree.c

View file

2

fs/btrfs/ordered-data.c

View file

20

fs/btrfs/transaction.c

View file

4

fs/btrfs/transaction.h

View file