From: Alex Shi <alex.shi@linux.alibaba.com>
To: Hugh Dickins <hughd@google.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>,
Vlastimil Babka <vbabka@suse.cz>,
David Rientjes <rientjes@google.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Johannes Weiner <hannes@cmpxchg.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] mm/compaction: avoid VM_BUG_ON(PageSlab()) in page_mapcount()
Date: Tue, 2 Jun 2020 19:28:30 +0800 [thread overview]
Message-ID: <7a02e2f6-6fa8-3727-1718-887c0d1dc1cb@linux.alibaba.com> (raw)
In-Reply-To: <alpine.LSU.2.11.2006012022440.1288@eggly.anvils>
在 2020/6/2 下午12:05, Hugh Dickins 写道:
> Cc'ing Alex Shi, because I noticed this when trying his v11 per-memcg
> lru_lock series (which appears to be a big improvement over earlier
> versions, thanks in particular to Johannes's memcg swap simplifications);
> and Alex's 12/16 makes a change on top of Konstantin's latter check,
> which will now just be reverted. I'm not yet confident in Alex's
> isolate_migratepages_block(), in part because this muddle.
Hi Hugh,
Yes, this could make a very tricky change on compaction behavior. I will update
the patchset after next update.
Thanks a lot for notice this! And looking forward to more comments on per memcg
lru_lock patchset! :)
Thanks
Alex
prev parent reply other threads:[~2020-06-02 11:29 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-13 14:05 [PATCH] mm/compaction: avoid VM_BUG_ON(PageSlab()) in page_mapcount() Konstantin Khlebnikov
2020-05-13 18:32 ` Andrew Morton
2020-05-13 19:28 ` Konstantin Khlebnikov
2020-05-13 21:35 ` Vlastimil Babka
2020-05-23 1:34 ` Andrew Morton
2020-05-23 13:55 ` Konstantin Khlebnikov
2020-05-24 1:01 ` Hugh Dickins
2020-05-24 11:21 ` Konstantin Khlebnikov
2020-05-24 19:12 ` Hugh Dickins
2020-06-02 4:05 ` Hugh Dickins
2020-06-02 4:13 ` Andrew Morton
2020-06-02 11:28 ` Alex Shi [this message]
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