linux-kernel - [PATCH] f2fs: use folio_nr_pages() instead of shift operation

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Message-Id: <20251004031217.50242-1-pedrodemargomes@gmail.com>
Date: Sat,  4 Oct 2025 00:12:17 -0300
From: Pedro Demarchi Gomes <pedrodemargomes@...il.com>
To: Chao Yu <chao@...nel.org>,
	Jaegeuk Kim <jaegeuk@...nel.org>
Cc: linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	Pedro Demarchi Gomes <pedrodemargomes@...il.com>
Subject: [PATCH] f2fs: 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@...il.com>
---
 fs/f2fs/f2fs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 46be7560548c..4467a6e7471c 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2036,7 +2036,7 @@ static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
 static inline struct f2fs_super_block *F2FS_SUPER_BLOCK(struct folio *folio,
 								pgoff_t index)
 {
-	pgoff_t idx_in_folio = index % (1 << folio_order(folio));
+	pgoff_t idx_in_folio = index % folio_nr_pages(folio);
 
 	return (struct f2fs_super_block *)
 		(page_address(folio_page(folio, idx_in_folio)) +
-- 
2.39.5