From: Minchan Kim <minchan@kernel.org>
To: zhong jiang <zhongjiang@huawei.com>
Cc: akpm@linux-foundation.org, vinayakm.list@gmail.com,
mhocko@suse.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Revert "mm: vmpressure: fix sending wrong events on underflow"
Date: Wed, 7 Jun 2017 15:12:16 +0900 [thread overview]
Message-ID: <20170607061216.GA5929@bbox> (raw)
In-Reply-To: <59378799.1050000@huawei.com>
On Wed, Jun 07, 2017 at 12:56:57PM +0800, zhong jiang wrote:
> On 2017/6/7 11:55, Minchan Kim wrote:
> > On Wed, Jun 07, 2017 at 11:08:37AM +0800, zhongjiang wrote:
> >> This reverts commit e1587a4945408faa58d0485002c110eb2454740c.
> >>
> >> THP lru page is reclaimed , THP is split to normal page and loop again.
> >> reclaimed pages should not be bigger than nr_scan. because of each
> >> loop will increase nr_scan counter.
> > Unfortunately, there is still underflow issue caused by slab pages as
> > Vinayak reported in description of e1587a4945408 so we cannot revert.
> > Please correct comment instead of removing the logic.
> >
> > Thanks.
> we calculate the vmpressue based on the Lru page, exclude the slab pages by previous
> discussion. is it not this?
>
IIRC, It is not merged into mainline although mmotm has it.
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next prev parent reply other threads:[~2017-06-07 6:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-07 3:08 [PATCH] Revert "mm: vmpressure: fix sending wrong events on underflow" zhongjiang
2017-06-07 3:55 ` Minchan Kim
2017-06-07 4:56 ` zhong jiang
2017-06-07 6:12 ` Minchan Kim [this message]
2017-06-07 6:17 ` vinayak menon
2017-06-07 6:41 ` zhong jiang
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