f2fs: use folio_nr_pages() instead of shift operation

pedrodemargomes · Jaegeuk Kim · commit e4384545e220 · 2025-10-24T21:23:55.000Z
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;
Reviewed-by: Chao Yu &lt;chao@kernel.org&gt;
Signed-off-by: Jaegeuk Kim &lt;jaegeuk@kernel.org&gt;
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
@@ -2096,7 +2096,7 @@ 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)) +

Original file line number	Diff line number	Diff line change
`@@ -2096,7 +2096,7 @@ static inline struct f2fs_super_block F2FS_RAW_SUPER(struct f2fs_sb_info sbi)`
`2096`	`2096`	`static inline struct f2fs_super_block F2FS_SUPER_BLOCK(struct folio folio,`
`2097`	`2097`	`pgoff_t index)`
`2098`	`2098`	`{`
`2099`		`- pgoff_t idx_in_folio = index % (1 << folio_order(folio));`
	`2099`	`+ pgoff_t idx_in_folio = index % folio_nr_pages(folio);`
`2100`	`2100`
`2101`	`2101`	`return (struct f2fs_super_block *)`
`2102`	`2102`	`(page_address(folio_page(folio, idx_in_folio)) +`