From: Pedro Demarchi Gomes <pedrodemargomes@gmail.com>
Date: Sat, 4 Oct 2025 03:19:12 +0000 (-0300)
Subject: dm-crypt: use folio_nr_pages() instead of shift operation
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9a746ee0fb399b2021e801c5f724e75c7468fcf6;p=thirdparty%2Fkernel%2Flinux.git

dm-crypt: use folio_nr_pages() instead of shift operation

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>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
---

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 04a553529dc2..5eace7d4a67a 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1747,7 +1747,7 @@ static void crypt_free_buffer_pages(struct crypt_config *cc, struct bio *clone)
 		bio_for_each_folio_all(fi, clone) {
 			if (folio_test_large(fi.folio)) {
 				percpu_counter_sub(&cc->n_allocated_pages,
-						1 << folio_order(fi.folio));
+						folio_nr_pages(fi.folio));
 				folio_put(fi.folio);
 			} else {
 				mempool_free(&fi.folio->page, &cc->page_pool);