tree 1298d39f3b3dae00776bc15a1f6677b0bb32dfaf
parent e76edab7f059bc1047c1865141e2709d70e74852
author Elena Reshetova <elena.reshetova@intel.com> 1488531314 +0200
committer David Sterba <dsterba@suse.com> 1492517243 +0200

btrfs: convert btrfs_caching_control.count 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>