On Mon, 23 Sep 2024 14:22:17 +0200, Uros Bizjak wrote:
> Use !try_cmpxchg instead of cmpxchg (*ptr, old, new) != old in
> xlog_cil_insert_pcp_aggregate(). x86 CMPXCHG instruction returns
> success in ZF flag, so this change saves a compare after cmpxchg.
>
> Also, try_cmpxchg implicitly assigns old *ptr value to "old" when
> cmpxchg fails. There is no need to re-read the value in the loop.
>
> [...]
Applied to xfs-6.12-rc2, thanks!
[1/1] xfs: Use try_cmpxchg() in xlog_cil_insert_pcp_aggregate()
commit: 6e19fd40d755a64f271687a21cd304ecba41a571
Best regards,
--
Carlos Maiolino <cem@xxxxxxxxxx>
