From: Sasha Levin <sasha.levin@oracle.com>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
riel@redhat.com, peterz@infradead.org, linux-mm@kvack.org
Subject: Re: [PATCH] mm: initialize variable for mem_cgroup_end_page_stat
Date: Thu, 30 Oct 2014 12:02:52 -0400 [thread overview]
Message-ID: <5452612C.5090609@oracle.com> (raw)
In-Reply-To: <20141030150624.GA24818@phnom.home.cmpxchg.org>
On 10/30/2014 11:06 AM, Johannes Weiner wrote:
>> You're using that value as soon as you are passing it to a function, it
>> > doesn't matter what happens inside that function.
> It's copied as part of the pass-by-value protocol, but we really don't
> do anything with it. So why does it matter?
Because it's undefined behaviour, which gives your compiler a license to
do whatever it wants?
Thanks,
Sasha
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next prev parent reply other threads:[~2014-10-30 16:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-30 1:44 Sasha Levin
2014-10-30 8:27 ` Michal Hocko
2014-10-30 13:32 ` Sasha Levin
2014-10-30 14:14 ` Johannes Weiner
2014-10-30 14:24 ` Sasha Levin
2014-10-30 15:06 ` Johannes Weiner
2014-10-30 16:02 ` Sasha Levin [this message]
2014-10-30 15:31 ` Michal Hocko
2014-10-30 17:26 ` Johannes Weiner
2014-10-30 17:42 ` Michal Hocko
2014-10-30 19:30 ` Peter Zijlstra
2014-10-31 18:17 ` Johannes Weiner
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