* [PATCH] io_uring/zcrx: use folio_nr_pages() instead of shift operation
@ 2025-10-04 3:07 Pedro Demarchi Gomes
2025-10-07 11:13 ` Pavel Begunkov
0 siblings, 1 reply; 2+ messages in thread
From: Pedro Demarchi Gomes @ 2025-10-04 3:07 UTC (permalink / raw)
To: Jens Axboe; +Cc: io-uring, linux-kernel, Pedro Demarchi Gomes
folio_nr_pages() is a faster helper function to get the number of pages when
NR_PAGES_IN_LARGE_FOLIO is enabled.
Signed-off-by: Pedro Demarchi Gomes <pedrodemargomes@gmail.com>
---
io_uring/zcrx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
index e5ff49f3425e..97fda3d65919 100644
--- a/io_uring/zcrx.c
+++ b/io_uring/zcrx.c
@@ -172,7 +172,7 @@ static unsigned long io_count_account_pages(struct page **pages, unsigned nr_pag
if (folio == last_folio)
continue;
last_folio = folio;
- res += 1UL << folio_order(folio);
+ res += folio_nr_pages(folio);
}
return res;
}
--
2.39.5
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] io_uring/zcrx: use folio_nr_pages() instead of shift operation
2025-10-04 3:07 [PATCH] io_uring/zcrx: use folio_nr_pages() instead of shift operation Pedro Demarchi Gomes
@ 2025-10-07 11:13 ` Pavel Begunkov
0 siblings, 0 replies; 2+ messages in thread
From: Pavel Begunkov @ 2025-10-07 11:13 UTC (permalink / raw)
To: Pedro Demarchi Gomes, Jens Axboe; +Cc: io-uring, linux-kernel
On 10/4/25 04:07, Pedro Demarchi Gomes wrote:
> folio_nr_pages() is a faster helper function to get the number of pages when
> NR_PAGES_IN_LARGE_FOLIO is enabled.
Looks straightforward, I'll take it into a branch.
> Signed-off-by: Pedro Demarchi Gomes <pedrodemargomes@gmail.com>
> ---
> io_uring/zcrx.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
> index e5ff49f3425e..97fda3d65919 100644
> --- a/io_uring/zcrx.c
> +++ b/io_uring/zcrx.c
> @@ -172,7 +172,7 @@ static unsigned long io_count_account_pages(struct page **pages, unsigned nr_pag
> if (folio == last_folio)
> continue;
> last_folio = folio;
> - res += 1UL << folio_order(folio);
> + res += folio_nr_pages(folio);
> }
> return res;
> }
--
Pavel Begunkov
^ permalink raw reply [flat|nested] 2+ messages in thread
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