Messages in this thread Patch in this message | | | Subject | [PATCH v2 3/6] mm/balloon_compaction: isolate balloon pages without lru_lock | From | Konstantin Khlebnikov <> | Date | Sat, 30 Aug 2014 20:41:17 +0400 |
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From: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
LRU-lock isn't required for balloon page isolation. This check makes migration of some ballooned pages mostly impossible because isolate_migratepages_range() drops LRU lock periodically.
Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@samsung.com> Cc: stable <stable@vger.kernel.org> # v3.8 --- mm/compaction.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/compaction.c b/mm/compaction.c index 73466e1..ad58f73 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -643,7 +643,7 @@ isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn, */ if (!PageLRU(page)) { if (unlikely(balloon_page_movable(page))) { - if (locked && balloon_page_isolate(page)) { + if (balloon_page_isolate(page)) { /* Successfully isolated */ goto isolate_success; }
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