From: Vladimir Davydov <vdavydov.dev@gmail.com>
To: dong <bauers@126.com>
Cc: Michal Hocko <mhocko@kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>,
bugzilla-daemon@bugzilla.kernel.org, linux-mm@kvack.org,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: Re:Re: Re: [Bug 201699] New: kmemleak in memcg_create_kmem_cache
Date: Wed, 21 Nov 2018 11:56:29 +0300 [thread overview]
Message-ID: <20181121085629.exbp7cjb56fpalxy@esperanza> (raw)
In-Reply-To: <375ca28a.7433.16735734d98.Coremail.bauers@126.com>
On Wed, Nov 21, 2018 at 04:46:48PM +0800, dong wrote:
> Sorry, I found when I ran `echo 3 > /proc/sys/vm/drop_caches`, the
> leak memory was released very slowly.
>
> The `Page Cache` of the opened log file is the reason to cause leak.
> Because the `struct page` contains `struct mem_cgroup *mem_cgroup`
> which has a large chunk of memory. Thanks everyone for helping me to
> solve the problem.
Ah, so it doesn't seem to be kmem problem at all. The email I sent
several minutes ago isn't relevant then.
> The last question: If I alloc many small pages and not free them, will
> I exhaust the memory ( because every page contains `mem_cgroup` )?
Once memory usage is close to the limit, the reclaimer will kick in
automatically to free those pages and the associated dead cgroups.
next prev parent reply other threads:[~2018-11-21 8:56 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-201699-27@https.bugzilla.kernel.org/>
2018-11-15 21:06 ` Andrew Morton
2018-11-16 2:23 ` dong
2018-11-16 3:04 ` dong
2018-11-16 3:37 ` dong
2018-11-16 17:50 ` Vladimir Davydov
2018-11-18 0:44 ` dong
2018-11-19 8:30 ` Vladimir Davydov
2018-11-19 10:24 ` Michal Hocko
2018-11-19 11:56 ` dong
2018-11-21 8:46 ` dong
2018-11-21 8:56 ` Vladimir Davydov [this message]
2018-11-21 9:06 ` Re:Re: " dong
2018-11-21 9:10 ` Michal Hocko
2018-11-21 9:22 ` dong
2018-11-21 9:36 ` 段熊春
2018-11-21 16:27 ` Michal Hocko
2018-11-22 2:19 ` 段熊春
2018-11-22 7:32 ` Michal Hocko
2018-11-22 2:56 ` 段熊春
2018-11-22 7:34 ` Michal Hocko
2018-11-22 8:21 ` 段熊春
2018-11-23 6:54 ` 段熊春
2018-11-21 8:52 ` Re: " Vladimir Davydov
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