On Tue, 12 Jul 2022 17:19:47 +0200, Uros Bizjak wrote:
> Use atomic_try_cmpxchg instead of atomic_cmpxchg (*ptr, old, new) == old
> in check_scale_change and atomic64_try_cmpxchg in blkcg_iolatency_done_bio.
> x86 CMPXCHG instruction returns success in ZF flag, so this change saves a
> compare after cmpxchg (and related move instruction in front of cmpxchg).
>
> No functional change intended.
>
> [...]
Applied, thanks!
[1/1] blk-iolatency: Use atomic{,64}_try_cmpxchg
commit: aee8960c2eae12636040dbf0f04e135273b1612d
Best regards,
--
Jens Axboe
