io_uring/zcrx: use folio_nr_pages() instead of shift operation

pedrodemargomes · axboe · commit a0169c3a6287 · 2025-11-13T11:19:37.000-07:00
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 &lt;pedrodemargomes@gmail.com&gt;
Signed-off-by: Pavel Begunkov &lt;asml.silence@gmail.com&gt;
Signed-off-by: Jens Axboe &lt;axboe@kernel.dk&gt;
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
@@ -170,7 +170,7 @@ 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;
 }

Original file line number	Diff line number	Diff line change
`@@ -170,7 +170,7 @@ static unsigned long io_count_account_pages(struct page **pages, unsigned nr_pag`
`170`	`170`	`if (folio == last_folio)`
`171`	`171`	`continue;`
`172`	`172`	`last_folio = folio;`
`173`		`- res += 1UL << folio_order(folio);`
	`173`	`+ res += folio_nr_pages(folio);`
`174`	`174`	`}`
`175`	`175`	`return res;`
`176`	`176`	`}`