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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-27 10:03:28 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-27 10:03:28 +0200 |
| commit | e6aa42f93751e4d9ac8505b7ac57acd5506bdec9 (patch) | |
| tree | 3bdbb589c7e0abeb111cdd142f647fd21c762355 /mm/filemap.c | |
| parent | 508aeb54e4f0225f4ff3da9b7ec8ac44ce30aad8 (diff) | |
| parent | 03c765b0e3b4cb5063276b086c76f7a612856a9a (diff) | |
Merge 5.19-rc4 into usb-next
We need the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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++) { |