The patch titled
lumpy: back out removal of active check in isolate_lru_pages
has been added to the -mm tree. Its filename is
lumpy-back-out-removal-of-active-check-in-isolate_lru_pages.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: lumpy: back out removal of active check in isolate_lru_pages
From: Andy Whitcroft <apw@xxxxxxxxxxxx>
As pointed out by Christop Lameter it should not be possible for a page to
change its active/inactive state without taking the lru_lock. Reinstate this
safety net.
Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
Acked-by: Mel Gorman <mel@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmscan.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff -puN mm/vmscan.c~lumpy-back-out-removal-of-active-check-in-isolate_lru_pages mm/vmscan.c
--- a/mm/vmscan.c~lumpy-back-out-removal-of-active-check-in-isolate_lru_pages
+++ a/mm/vmscan.c
@@ -686,10 +686,13 @@ static unsigned long isolate_lru_pages(u
nr_taken++;
break;
- default:
- /* page is being freed, or is a missmatch */
+ case -EBUSY:
+ /* else it is being freed elsewhere */
list_move(&page->lru, src);
continue;
+
+ default:
+ BUG();
}
if (!order)
_
Patches currently in -mm which might be from apw@xxxxxxxxxxxx are
pci-device-ensure-sysdata-initialised-v2.patch
move-free-pages-between-lists-on-steal-fix.patch
fix-corruption-of-memmap-on-ia64-sparsemem-when-mem_section-is-not-a-power-of-2.patch
lumpy-reclaim-v4.patch
lumpy-back-out-removal-of-active-check-in-isolate_lru_pages.patch
lumpy-only-count-taken-pages-as-scanned.patch
-
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