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 <[email protected]> --- mm/page_alloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8fcced7..277ecee 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -730,9 +730,10 @@ static void __free_pages_ok(struct page *page, unsigned int order) if (!free_pages_prepare(page, order)) return; + migratetype = get_pageblock_migratetype(page); + local_irq_save(flags); __count_vm_events(PGFREE, 1 << order); - migratetype = get_pageblock_migratetype(page); set_freepage_migratetype(page, migratetype); free_one_page(page_zone(page), page, order, migratetype); local_irq_restore(flags); -- 1.8.1.4 -- 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/
