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 <sasha.levin@xxxxxxxxxx>
---
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
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