diff options
| author | Dave Airlie <airlied@redhat.com> | 2022-07-13 10:54:56 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2022-07-13 10:54:56 +1000 |
| commit | e23a5e14aa278858c2e3d81ec34e83aa9a4177c5 (patch) | |
| tree | 8b662fca8f0643d2b7ef0836da91835408075208 /mm/filemap.c | |
| parent | 5e4cb0afe21e4e744ed808de1169a62ab35a57f5 (diff) | |
| parent | 32346491ddf24599decca06190ebca03ff9de7f8 (diff) | |
Backmerge tag 'v5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next
Backmerge in rc6 so I can merge msm next easier.
Linux 5.19-rc6
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index ac3775c1ce4c..ffdfbc8b0e3c 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2385,6 +2385,8 @@ static void filemap_get_read_batch(struct address_space *mapping, continue; if (xas.xa_index > max || xa_is_value(folio)) break; + if (xa_is_sibling(folio)) + break; if (!folio_try_get_rcu(folio)) goto retry; @@ -2629,6 +2631,13 @@ err: return err; } +static inline bool pos_same_folio(loff_t pos1, loff_t pos2, struct folio *folio) +{ + unsigned int shift = folio_shift(folio); + + return (pos1 >> shift == pos2 >> shift); +} + /** * filemap_read - Read data from the page cache. * @iocb: The iocb to read. @@ -2700,11 +2709,11 @@ ssize_t filemap_read(struct kiocb *iocb, struct iov_iter *iter, writably_mapped = mapping_writably_mapped(mapping); /* - * When a sequential read accesses a page several times, only + * When a read accesses the same folio several times, only * mark it as accessed the first time. */ - if (iocb->ki_pos >> PAGE_SHIFT != - ra->prev_pos >> PAGE_SHIFT) + if (!pos_same_folio(iocb->ki_pos, ra->prev_pos - 1, + fbatch.folios[0])) folio_mark_accessed(fbatch.folios[0]); for (i = 0; i < folio_batch_count(&fbatch); i++) { |