diff options
| author | Jan Kara <jack@suse.cz> | 2017-09-06 16:21:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-06 17:27:26 -0700 |
| commit | d72dc8a25afc71ce90ee92bdd77550e9beb85d4d (patch) | |
| tree | da47df20fe7bd2672f8368a2545f82e17703820b /mm/swap.c | |
| parent | 26b433d0da062d6e19d75350c0171d3cf8ff560d (diff) | |
| download | lwn-d72dc8a25afc71ce90ee92bdd77550e9beb85d4d.tar.gz lwn-d72dc8a25afc71ce90ee92bdd77550e9beb85d4d.zip | |
mm: make pagevec_lookup() update index
Make pagevec_lookup() (and underlying find_get_pages()) update index to
the next page where iteration should continue. Most callers want this
and also pagevec_lookup_tag() already does this.
Link: http://lkml.kernel.org/r/20170726114704.7626-3-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swap.c')
| -rw-r--r-- | mm/swap.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/swap.c b/mm/swap.c index 60b1d2a75852..4bffd1198ce5 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -957,12 +957,13 @@ void pagevec_remove_exceptionals(struct pagevec *pvec) * reference against the pages in @pvec. * * The search returns a group of mapping-contiguous pages with ascending - * indexes. There may be holes in the indices due to not-present pages. + * indexes. There may be holes in the indices due to not-present pages. We + * also update @start to index the next page for the traversal. * * pagevec_lookup() returns the number of pages which were found. */ unsigned pagevec_lookup(struct pagevec *pvec, struct address_space *mapping, - pgoff_t start, unsigned nr_pages) + pgoff_t *start, unsigned nr_pages) { pvec->nr = find_get_pages(mapping, start, nr_pages, pvec->pages); return pagevec_count(pvec); |