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Date: Thu, 1 May 2014 09:44:41 +0100 From: Mel Gorman <mgorman@...e.de> To: Linux-MM <linux-mm@...ck.org>, Linux-FSDevel <linux-fsdevel@...r.kernel.org> Cc: Johannes Weiner <hannes@...xchg.org>, Vlastimil Babka <vbabka@...e.cz>, Jan Kara <jack@...e.cz>, Michal Hocko <mhocko@...e.cz>, Hugh Dickins <hughd@...gle.com>, Mel Gorman <mgorman@...e.de>, Linux Kernel <linux-kernel@...r.kernel.org> Subject: [PATCH 10/17] mm: page_alloc: Lookup pageblock migratetype with IRQs enabled during free get_pageblock_migratetype() is called during free with IRQs disabled. This is unnecessary and disables IRQs for longer than necessary. Signed-off-by: Mel Gorman <mgorman@...e.de> --- 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 61d45fd..2e55bc8 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -773,9 +773,9 @@ static void __free_pages_ok(struct page *page, unsigned int order) if (!free_pages_prepare(page, order)) return; + migratetype = get_pfnblock_migratetype(page, pfn); local_irq_save(flags); __count_vm_events(PGFREE, 1 << order); - migratetype = get_pfnblock_migratetype(page, pfn); set_freepage_migratetype(page, migratetype); free_one_page(page_zone(page), page, pfn, order, migratetype); local_irq_restore(flags); -- 1.8.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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