The patch titled
Subject: mm: vmscan: check if we isolated a compound page during lumpy scan
has been removed from the -mm tree. Its filename was
mm-vmscan-check-if-we-isolated-a-compound-page-during-lumpy-scan.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: mm: vmscan: check if we isolated a compound page during lumpy scan
Properly take into account if we isolated a compound page during the lumpy
scan in reclaim and skip over the tail pages when encountered. This
corrects the values given to the tracepoint for number of lumpy pages
isolated and will avoid breaking the loop early if compound pages smaller
than the requested allocation size are requested.
[mgorman@xxxxxxx: Updated changelog]
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx>
Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>
Cc: Dave Jones <davej@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Andy Isaacson <adi@xxxxxxxxxxxxx>
Cc: Nai Xia <nai.xia@xxxxxxxxx>
Cc: Johannes Weiner <jweiner@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmscan.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff -puN mm/vmscan.c~mm-vmscan-check-if-we-isolated-a-compound-page-during-lumpy-scan mm/vmscan.c
--- a/mm/vmscan.c~mm-vmscan-check-if-we-isolated-a-compound-page-during-lumpy-scan
+++ a/mm/vmscan.c
@@ -1196,13 +1196,17 @@ static unsigned long isolate_lru_pages(u
break;
if (__isolate_lru_page(cursor_page, mode, file) == 0) {
+ unsigned int isolated_pages;
+
mem_cgroup_lru_del(cursor_page);
list_move(&cursor_page->lru, dst);
- nr_taken += hpage_nr_pages(cursor_page);
- nr_lumpy_taken++;
+ isolated_pages = hpage_nr_pages(cursor_page);
+ nr_taken += isolated_pages;
+ nr_lumpy_taken += isolated_pages;
if (PageDirty(cursor_page))
- nr_lumpy_dirty++;
+ nr_lumpy_dirty += isolated_pages;
scan++;
+ pfn += isolated_pages - 1;
} else {
/*
* Check if the page is freed already.
_
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
origin.patch
mm-fix-null-ptr-dereference-in-__count_immobile_pages.patch
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