Re: [PATCH v3] xfs: Use try_cmpxchg() in xlog_cil_insert_pcp_aggregate()

[Carlos Maiolino]

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>