summaryrefslogtreecommitdiff
path: root/mm/swap.c
diff options
context:
space:
mode:
authorJan Kara <jack@suse.cz>2017-09-07 02:21:18 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-07 03:27:26 +0300
commitd72dc8a25afc71ce90ee92bdd77550e9beb85d4d (patch)
treeda47df20fe7bd2672f8368a2545f82e17703820b /mm/swap.c
parent26b433d0da062d6e19d75350c0171d3cf8ff560d (diff)
downloadlinux-d72dc8a25afc71ce90ee92bdd77550e9beb85d4d.tar.xz
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.c5
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);