On Mon, Nov 12 2012, Marek Szyprowski wrote: > __alloc_contig_migrate_range() should use all possible ways to get all the > pages migrated from the given memory range, so pruning per-cpu lru lists > for all CPUs is required, regadless the cost of such operation. Otherwise > some pages which got stuck at per-cpu lru list might get missed by > migration procedure causing the contiguous allocation to fail. > > Reported-by: SeongHwan Yoon <[email protected]> > Signed-off-by: Marek Szyprowski <[email protected]> > Signed-off-by: Kyungmin Park <[email protected]>
Acked-by: Michal Nazarewicz <[email protected]> > --- > mm/page_alloc.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index 1bfe2b0..fcb9719 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -5677,7 +5677,7 @@ static int __alloc_contig_migrate_range(struct > compact_control *cc, > unsigned int tries = 0; > int ret = 0; > > - migrate_prep_local(); > + migrate_prep(); > > while (pfn < end || !list_empty(&cc->migratepages)) { > if (fatal_signal_pending(current)) { -- Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michał “mina86” Nazarewicz (o o) ooo +----<email/xmpp: [email protected]>--------------ooO--(_)--Ooo--
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