From: David Rientjes <rientjes@google.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Vladimir Davydov <vdavydov@parallels.com>,
mhocko@suse.cz, linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] memcg: fix mutex not unlocked on memcg_create_kmem_cache fail path
Date: Thu, 30 Jan 2014 14:13:18 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.02.1401301411590.15271@chino.kir.corp.google.com> (raw)
In-Reply-To: <20140130140902.93d35d866f9ea1c697811f6e@linux-foundation.org>
On Thu, 30 Jan 2014, Andrew Morton wrote:
> > Why? We already construct the name in memcg_create_kmem_cache()
> > appropriately, we just want to avoid the kstrdup() in
> > kmem_cache_create_memcg() since it's pointless like my patch does.
>
> oh, OK, missed that.
>
> The problem now is that the string at kmem_cache.name is PATH_MAX
> bytes, and PATH_MAX is huuuuuuuge.
>
It always was. Google uses pretty long memcg names (although admittedly
not as long as PATH_MAX!) and it hasn't caused any problem with
/proc/slabinfo or slabtop(1).
next prev parent reply other threads:[~2014-01-30 22:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-30 16:01 [PATCH] memcg: fix mutex not unlocked on memcg_create_kmem_cache fail path Vladimir Davydov
2014-01-30 21:01 ` Andrew Morton
2014-01-30 21:14 ` David Rientjes
2014-01-30 21:29 ` Andrew Morton
2014-01-30 21:38 ` David Rientjes
2014-01-30 21:50 ` Andrew Morton
2014-01-30 22:04 ` David Rientjes
2014-01-30 22:09 ` Andrew Morton
2014-01-30 22:13 ` David Rientjes [this message]
2014-01-30 22:15 ` Andrew Morton
2014-01-30 22:39 ` David Rientjes
2014-01-31 6:53 ` Vladimir Davydov
2014-01-31 10:42 ` David Rientjes
2014-01-31 11:29 ` Vladimir Davydov
2014-01-30 21:36 ` David Rientjes
2014-01-30 21:09 ` David Rientjes
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