The patch titled
mm: fix lumpy reclaim lru handling at isolate_lru_pages
has been removed from the -mm tree. Its filename was
mm-fix-lumpy-reclaim-lru-handling-at-isolate_lru_pages.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/
------------------------------------------------------
Subject: mm: fix lumpy reclaim lru handling at isolate_lru_pages
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
At lumpy reclaim, a page failed to be taken by __isolate_lru_page() can be
pushed back to "src" list by list_move(). But the page may not be from
"src" list. This pushes the page back to wrong LRU. And list_move()
itself is unnecessary because the page is not on top of LRU. Then, leave
it as it is if __isolate_lru_page() fails.
Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Acked-by: Mel Gorman <mel@xxxxxxxxx>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmscan.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff -puN mm/vmscan.c~mm-fix-lumpy-reclaim-lru-handling-at-isolate_lru_pages mm/vmscan.c
--- a/mm/vmscan.c~mm-fix-lumpy-reclaim-lru-handling-at-isolate_lru_pages
+++ a/mm/vmscan.c
@@ -929,18 +929,10 @@ static unsigned long isolate_lru_pages(u
/* Check that we have not crossed a zone boundary. */
if (unlikely(page_zone_id(cursor_page) != zone_id))
continue;
- switch (__isolate_lru_page(cursor_page, mode, file)) {
- case 0:
+ if (__isolate_lru_page(cursor_page, mode, file) == 0) {
list_move(&cursor_page->lru, dst);
nr_taken++;
scan++;
- break;
-
- case -EBUSY:
- /* else it is being freed elsewhere */
- list_move(&cursor_page->lru, src);
- default:
- break; /* ! on LRU or wrong list */
}
}
}
_
Patches currently in -mm which might be from kamezawa.hiroyu@xxxxxxxxxxxxxx are
origin.patch
cgroups-forbid-noprefix-if-mounting-more-than-just-cpuset-subsystem.patch
cgroups-forbid-noprefix-if-mounting-more-than-just-cpuset-subsystem-fix.patch
cgroups-forbid-noprefix-if-mounting-more-than-just-cpuset-subsystem-fix2.patch
memcg-add-file-based-rss-accounting.patch
memcg-add-file-based-rss-accounting-fix-mem_cgroup_update_mapped_file_stat-oops.patch
memcg-remove-mem_cgroup_cache_charge_swapin.patch
memcg-remove-some-redundant-checks.patch
memcg-remove-unneeded-forward-declaration-from-schedh.patch
memcg-fix-swap-accounting.patch
memcg-fix-swap-accounting-update.patch
memcg-fix-behavior-under-memorylimit-equals-to-memswlimit.patch
memcg-add-interface-to-reset-limits.patch
memcg-fix-lru-rotation-in-isolate_pages.patch
elf-reduce-default-max_map_count-to-be-safe-value.patch
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