On Sat, Aug 30, 2014 at 08:41:17PM +0400, Konstantin Khlebnikov wrote: > From: Konstantin Khlebnikov <k.khlebni...@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.khlebni...@samsung.com> > Cc: stable <sta...@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; > } > Acked-by: Rafael Aquini <aqu...@redhat.com>
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