Messages in this thread | | | Date | Tue, 16 Aug 2016 16:56:54 +0800 | From | Xishi Qiu <> | Subject | Re: [PATCH 1/3] mm: fix set pageblock migratetype in deferred struct page init |
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On 2016/8/16 16:41, Michal Hocko wrote:
> On Thu 04-08-16 19:25:03, Xishi Qiu wrote: >> MAX_ORDER_NR_PAGES is usually 4M, and a pageblock is usually 2M, so we only >> set one pageblock's migratetype in deferred_free_range() if pfn is aligned >> to MAX_ORDER_NR_PAGES. > > Do I read the changelog correctly and the bug causes leaking unmovable > allocations into movable zones?
Hi Michal,
This bug will cause uninitialized migratetype, you can see from "cat /proc/pagetypeinfo", almost half blocks are Unmovable.
Also this bug missed to free the last block pages, it cause memory leaking.
Thanks, Xishi Qiu
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