From: Liao Tonglang <liaotonglang@gmail.com>
To: Jan Kara <jack@suse.cz>
Cc: tj@kernel.org, axboe@fb.com, akpm@linux-foundation.org,
hannes@cmpxchg.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: cleanup balance_dirty_pages() that leave variables uninitialized
Date: Tue, 13 Oct 2015 09:41:52 +0800 [thread overview]
Message-ID: <561C6160.2090400@gmail.com> (raw)
In-Reply-To: <20151012125835.GD17050@quack.suse.cz>
On 2015/10/12 20:58, Jan Kara wrote:
> What
> gcc version are you using?
It is the last line of my gcc -v command.
gcc version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC)
And it warn like this:
mm/page-writeback.c: In function ?balance_dirty_pages.isra.26?:
mm/page-writeback.c:1537:26: warning: ?m_thresh? may be used
uninitialized in this function [-Wmaybe-uninitialized]
unsigned long m_dirty, m_thresh, m_bg_thresh;
^
mm/page-writeback.c:1537:17: warning: ?m_dirty? may be used
uninitialized in this function [-Wmaybe-uninitialized]
unsigned long m_dirty, m_thresh, m_bg_thresh;
^
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WARNING: multiple messages have this Message-ID (diff)
From: Liao Tonglang <liaotonglang@gmail.com>
To: Jan Kara <jack@suse.cz>
Cc: tj@kernel.org, axboe@fb.com, akpm@linux-foundation.org,
hannes@cmpxchg.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: cleanup balance_dirty_pages() that leave variables uninitialized
Date: Tue, 13 Oct 2015 09:41:52 +0800 [thread overview]
Message-ID: <561C6160.2090400@gmail.com> (raw)
In-Reply-To: <20151012125835.GD17050@quack.suse.cz>
On 2015/10/12 20:58, Jan Kara wrote:
> What
> gcc version are you using?
It is the last line of my gcc -v command.
gcc version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC)
And it warn like this:
mm/page-writeback.c: In function ‘balance_dirty_pages.isra.26’:
mm/page-writeback.c:1537:26: warning: ‘m_thresh’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
unsigned long m_dirty, m_thresh, m_bg_thresh;
^
mm/page-writeback.c:1537:17: warning: ‘m_dirty’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
unsigned long m_dirty, m_thresh, m_bg_thresh;
^
next prev parent reply other threads:[~2015-10-13 1:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-12 12:24 [PATCH] mm: cleanup balance_dirty_pages() that leave variables uninitialized Liao Tonglang
2015-10-12 12:24 ` Liao Tonglang
2015-10-12 12:58 ` Jan Kara
2015-10-12 12:58 ` Jan Kara
2015-10-13 1:41 ` Liao Tonglang [this message]
2015-10-13 1:41 ` Liao Tonglang
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