CMA allocation drains pcplists so that pages can merge back to buddy allocator. Since it operates on a single zone, we can reduce the pcplists drain to the single zone, which is now possible.
The change should make CMA allocations faster and not disturbing unrelated pcplists anymore. Signed-off-by: Vlastimil Babka <[email protected]> Cc: Naoya Horiguchi <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Yasuaki Ishimatsu <[email protected]> Cc: Zhang Yanfei <[email protected]> Cc: Xishi Qiu <[email protected]> Cc: Vladimir Davydov <[email protected]> Cc: Joonsoo Kim <[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 bc3db3e..e758159 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6417,7 +6417,7 @@ int alloc_contig_range(unsigned long start, unsigned long end, */ lru_add_drain_all(); - drain_all_pages(NULL); + drain_all_pages(cc.zone); order = 0; outer_start = start; -- 1.8.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
