From: Wenwei Tao <wwtao0320@163.com>
To: akpm@linux-foundation.org, mgorman@techsingularity.net,
mhocko@suse.com, vbabka@suse.cz, rientjes@google.com,
kirill.shutemov@linux.intel.com, iamjoonsoo.kim@lge.com,
izumi.taku@jp.fujitsu.com, hannes@cmpxchg.org
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, ww.tao0320@gmail.com
Subject: [RFC PATCH 1/3] mm, page_alloc: free HIGHATOMIC page directly to the allocator
Date: Sat, 18 Jun 2016 17:34:15 +0800 [thread overview]
Message-ID: <1466242457-2440-1-git-send-email-wwtao0320@163.com> (raw)
From: Wenwei Tao <ww.tao0320@gmail.com>
Some pages might have already been allocated before reserve
the pageblock as HIGHATOMIC. When free these pages, put them
directly to the allocator instead of the pcp lists since they
might have the chance to be merged to high order pages.
Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
---
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 6903b69..19f9e76 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2412,7 +2412,8 @@ void free_hot_cold_page(struct page *page, bool cold)
* excessively into the page allocator
*/
if (migratetype >= MIGRATE_PCPTYPES) {
- if (unlikely(is_migrate_isolate(migratetype))) {
+ if (unlikely(is_migrate_isolate(migratetype) ||
+ migratetype == MIGRATE_HIGHATOMIC)) {
free_one_page(zone, page, pfn, 0, migratetype);
goto out;
}
--
1.8.3.1
--
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next reply other threads:[~2016-06-18 9:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-18 9:34 Wenwei Tao [this message]
2016-06-18 10:14 ` [RFC PATCH 1/3] mm, page_alloc: free HIGHATOMIC page directly to the allocator Vlastimil Babka
[not found] ` <CACygaLAU-PiB8UDR0i9FYbTuH8vBKJRFxufGOVoWCmqPad-XZQ@mail.gmail.com>
2016-06-19 2:49 ` Fwd: " Wenwei Tao
2016-06-19 1:48 ` [RFC PATCH 2/3] mm, page_alloc: get page migreate type again when related to highatomic Wenwei Tao
2016-06-19 1:51 ` [RFC PATCH 3/3] mm, page_alloc: prevent merge freepages between highatomic and others Wenwei Tao
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