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Date: Sat, 4 Jul 2020 21:12:46 +0800 From: Alex Shi <alex.shi@...ux.alibaba.com> To: Matthew Wilcox <willy@...radead.org> Cc: Konstantin Khlebnikov <koct9i@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, Mel Gorman <mgorman@...hsingularity.net>, Tejun Heo <tj@...nel.org>, Hugh Dickins <hughd@...gle.com>, Константин Хлебников <khlebnikov@...dex-team.ru>, daniel.m.jordan@...cle.com, yang.shi@...ux.alibaba.com, Johannes Weiner <hannes@...xchg.org>, lkp@...el.com, linux-mm@...ck.org, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Cgroups <cgroups@...r.kernel.org>, shakeelb@...gle.com, Joonsoo Kim <iamjoonsoo.kim@....com>, richard.weiyang@...il.com Subject: Re: [PATCH v14 15/20] mm/swap: serialize memcg changes during pagevec_lru_move_fn 在 2020/7/4 下午7:39, Matthew Wilcox 写道: > On Sat, Jul 04, 2020 at 07:34:59PM +0800, Alex Shi wrote: >> That's a great idea! Guess what the new struct we need would be like this? >> I like to try this. :) >> >> >> diff --git a/include/linux/pagevec.h b/include/linux/pagevec.h >> index 081d934eda64..d62778c8c184 100644 >> --- a/include/linux/pagevec.h >> +++ b/include/linux/pagevec.h >> @@ -20,7 +20,7 @@ >> struct pagevec { >> unsigned char nr; >> bool percpu_pvec_drained; >> - struct page *pages[PAGEVEC_SIZE]; >> + struct list_head veclist; >> }; > > pagevecs are used not just for LRU. If you want to use a list_head for > LRU then define a new structure. > yes, there are much page don't use page->lru, like slab etc. we need a new struct. Thanks! Alex
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