* [PATCH v1] mm/filemap: use folio_next_index() for start
@ 2026-06-01 11:04 tanze
2026-06-01 16:25 ` Jan Kara
2026-06-01 17:48 ` Matthew Wilcox
0 siblings, 2 replies; 3+ messages in thread
From: tanze @ 2026-06-01 11:04 UTC (permalink / raw)
To: linux-mm, linux-fsdevel, linux-kernel; +Cc: willy, akpm, jack
Use folio_next_index() instead of open-coding
folio->index + folio_nr_pages(folio) when updating @start in
filemap_get_folios_contig(), filemap_get_folios_tag(), and
filemap_get_folios_dirty().
Signed-off-by: tanze <tanze@kylinos.cn>
---
mm/filemap.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/mm/filemap.c b/mm/filemap.c
index 4e636647100c..e233d4a003ce 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2283,8 +2283,7 @@ unsigned filemap_get_folios_contig(struct address_space *mapping,
goto put_folio;
if (!folio_batch_add(fbatch, folio)) {
- nr = folio_nr_pages(folio);
- *start = folio->index + nr;
+ *start = folio_next_index(folio);
goto out;
}
xas_advance(&xas, folio_next_index(folio) - 1);
@@ -2344,8 +2343,7 @@ unsigned filemap_get_folios_tag(struct address_space *mapping, pgoff_t *start,
if (xa_is_value(folio))
continue;
if (!folio_batch_add(fbatch, folio)) {
- unsigned long nr = folio_nr_pages(folio);
- *start = folio->index + nr;
+ *start = folio_next_index(folio);
goto out;
}
}
@@ -2403,8 +2401,7 @@ unsigned filemap_get_folios_dirty(struct address_space *mapping, pgoff_t *start,
}
}
if (!folio_batch_add(fbatch, folio)) {
- unsigned long nr = folio_nr_pages(folio);
- *start = folio->index + nr;
+ *start = folio_next_index(folio);
goto out;
}
}
--
2.43.0
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH v1] mm/filemap: use folio_next_index() for start
2026-06-01 11:04 [PATCH v1] mm/filemap: use folio_next_index() for start tanze
@ 2026-06-01 16:25 ` Jan Kara
2026-06-01 17:48 ` Matthew Wilcox
1 sibling, 0 replies; 3+ messages in thread
From: Jan Kara @ 2026-06-01 16:25 UTC (permalink / raw)
To: tanze; +Cc: linux-mm, linux-fsdevel, linux-kernel, willy, akpm, jack
On Mon 01-06-26 19:04:23, tanze wrote:
> Use folio_next_index() instead of open-coding
> folio->index + folio_nr_pages(folio) when updating @start in
> filemap_get_folios_contig(), filemap_get_folios_tag(), and
> filemap_get_folios_dirty().
>
> Signed-off-by: tanze <tanze@kylinos.cn>
Looks good. Feel free to add:
Reviewed-by: Jan Kara <jack@suse.cz>
Honza
> ---
> mm/filemap.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/mm/filemap.c b/mm/filemap.c
> index 4e636647100c..e233d4a003ce 100644
> --- a/mm/filemap.c
> +++ b/mm/filemap.c
> @@ -2283,8 +2283,7 @@ unsigned filemap_get_folios_contig(struct address_space *mapping,
> goto put_folio;
>
> if (!folio_batch_add(fbatch, folio)) {
> - nr = folio_nr_pages(folio);
> - *start = folio->index + nr;
> + *start = folio_next_index(folio);
> goto out;
> }
> xas_advance(&xas, folio_next_index(folio) - 1);
> @@ -2344,8 +2343,7 @@ unsigned filemap_get_folios_tag(struct address_space *mapping, pgoff_t *start,
> if (xa_is_value(folio))
> continue;
> if (!folio_batch_add(fbatch, folio)) {
> - unsigned long nr = folio_nr_pages(folio);
> - *start = folio->index + nr;
> + *start = folio_next_index(folio);
> goto out;
> }
> }
> @@ -2403,8 +2401,7 @@ unsigned filemap_get_folios_dirty(struct address_space *mapping, pgoff_t *start,
> }
> }
> if (!folio_batch_add(fbatch, folio)) {
> - unsigned long nr = folio_nr_pages(folio);
> - *start = folio->index + nr;
> + *start = folio_next_index(folio);
> goto out;
> }
> }
> --
> 2.43.0
>
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH v1] mm/filemap: use folio_next_index() for start
2026-06-01 11:04 [PATCH v1] mm/filemap: use folio_next_index() for start tanze
2026-06-01 16:25 ` Jan Kara
@ 2026-06-01 17:48 ` Matthew Wilcox
1 sibling, 0 replies; 3+ messages in thread
From: Matthew Wilcox @ 2026-06-01 17:48 UTC (permalink / raw)
To: tanze; +Cc: linux-mm, linux-fsdevel, linux-kernel, akpm, jack
On Mon, Jun 01, 2026 at 07:04:23PM +0800, tanze wrote:
> Use folio_next_index() instead of open-coding
> folio->index + folio_nr_pages(folio) when updating @start in
> filemap_get_folios_contig(), filemap_get_folios_tag(), and
> filemap_get_folios_dirty().
>
> Signed-off-by: tanze <tanze@kylinos.cn>
Thanks!
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2026-06-01 11:04 [PATCH v1] mm/filemap: use folio_next_index() for start tanze
2026-06-01 16:25 ` Jan Kara
2026-06-01 17:48 ` Matthew Wilcox
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