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 04a553529dc2795ef60dc96c7026d9a0bedc5f4d..5eace7d4a67a0f52c5afdbfe3482026da63a821e 100644 (file)
--- 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);