On Sat, 12 Jul 2025 10:23:32 +0800 Chi Zhiling <chizhiling@xxxxxxx> wrote:
> On 2025/7/12 00:15, David Hildenbrand wrote:
> > On 10.07.25 08:04, Chi Zhiling wrote:
> >> From: Chi Zhiling <chizhiling@xxxxxxxxxx>
> >>
> >> folio_nr_pages() is faster helper function to get the number of pages
> >> when NR_PAGES_IN_LARGE_FOLIO is enabled.
> >>
> >> Signed-off-by: Chi Zhiling <chizhiling@xxxxxxxxxx>
> >> ---
> >> mm/readahead.c | 2 +-
> >> 1 file changed, 1 insertion(+), 1 deletion(-)
> >>
> >> diff --git a/mm/readahead.c b/mm/readahead.c
> >> index 95a24f12d1e7..406756d34309 100644
> >> --- a/mm/readahead.c
> >> +++ b/mm/readahead.c
> >> @@ -649,7 +649,7 @@ void page_cache_async_ra(struct readahead_control
> >> *ractl,
> >> * Ramp up sizes, and push forward the readahead window.
> >> */
> >> expected = round_down(ra->start + ra->size - ra->async_size,
> >> - 1UL << folio_order(folio));
> >> + folio_nr_pages(folio));
> >> if (index == expected) {
> >> ra->start += ra->size;
> >> /*
> >
> > This should probably get squashed in Ryans commit?
>
> I have no objection, it's up to Ryan.
"Ryans commit" is now c4602f9fa77f ("mm/readahead: store folio order in
struct file_ra_state") in mm-stable. I'd prefer not to rebase for this!
