Rather than calling free_hot_cold_page() for every page, batch them up in a list and pass them on to free_hot_cold_page_list(). This will let us defer them to a workqueue.
Signed-off-by: Sasha Levin <[email protected]> --- mm/page_alloc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 812ca75..e58e795 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2997,12 +2997,16 @@ EXPORT_SYMBOL(get_zeroed_page); void __free_pages(struct page *page, unsigned int order) { + LIST_HEAD(hot_cold_pages); + if (put_page_testzero(page)) { if (order == 0) - free_hot_cold_page(page, false); + list_add(&page->lru, &hot_cold_pages); else __free_pages_ok(page, order); } + + free_hot_cold_page_list(&hot_cold_pages, false); } EXPORT_SYMBOL(__free_pages); -- 1.7.10.4 -- 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/
