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SubjectRe: [PATCHv2] refcount: always allow checked forms
On Wed, Jul 11, 2018 at 10:36:07AM +0100, Mark Rutland wrote:
> In many cases, it would be useful to be able to use the full
> sanity-checked refcount helpers regardless of CONFIG_REFCOUNT_FULL, as
> this would help to avoid duplicate warnings where callers try to
> sanity-check refcount manipulation.
>
> This patch refactors things such that the full refcount helpers were
> always built, as refcount_${op}_checked(), such that they can be used
> regardless of CONFIG_REFCOUNT_FULL. This will allow code which *always*
> wants a checked refcount to opt-in, avoiding the need to duplicate the
> logic for warnings.
>
> There should be no functional change as a result of this patch.
>
> Signed-off-by: Mark Rutland <mark.rutland@arm.com>
> Acked-by: Kees Cook <keescook@chromium.org>
> Reviewed-by: David Sterba <dsterba@suse.com>
> Cc: Boqun Feng <boqun.feng@gmail.com>
> Cc: Ingo Molnar <mingo@kernel.org>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Will Deacon <will.deacon@arm.com>
> ---
> include/linux/refcount.h | 27 +++++++++++++++++-------
> lib/refcount.c | 53 +++++++++++++++++++++++-------------------------
> 2 files changed, 45 insertions(+), 35 deletions(-)

Looks good to me:

Acked-by: Will Deacon <will.deacon@arm.com>

Will
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