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

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

[Pedro Demarchi Gomes]

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>
---
 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



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Re: [f2fs-dev] [PATCH] f2fs: use folio_nr_pages() instead of shift operation

[Chao Yu via Linux-f2fs-devel]

On 10/4/2025 11:12 AM, Pedro Demarchi Gomes wrote:
> 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>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,


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Re: [f2fs-dev] [PATCH] f2fs: use folio_nr_pages() instead of shift operation

[patchwork-bot+f2fs--- via Linux-f2fs-devel]

Hello:

This patch was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaegeuk@kernel.org>:

On Sat,  4 Oct 2025 00:12:17 -0300 you wrote:
> 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>
> ---
>  fs/f2fs/f2fs.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Here is the summary with links:
  - [f2fs-dev] f2fs: use folio_nr_pages() instead of shift operation
    https://git.kernel.org/jaegeuk/f2fs/c/c9cd50d5aaf8

You are awesome, thank you!
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