linux-kernel - Re: [PATCH] f2fs: mutex can't be used by down_write_nest

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Message-ID: <20160302182246.GC9395@jaegeuk.gateway>
Date:	Wed, 2 Mar 2016 10:22:46 -0800
From:	Jaegeuk Kim <jaegeuk@...nel.org>
To:	Chao Yu <chao2.yu@...sung.com>
Cc:	'Yang Shi' <yang.shi@...aro.org>, cm224.lee@...sung.com,
	tglx@...utronix.de, rostedt@...dmis.org, bigeasy@...utronix.de,
	linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net,
	linux-fsdevel@...r.kernel.org, linux-rt-users@...r.kernel.org,
	linaro-kernel@...ts.linaro.org
Subject: Re: [PATCH] f2fs: mutex can't be used by down_write_nest_lock()

On Tue, Mar 01, 2016 at 04:59:39PM +0800, Chao Yu wrote:
> Hi Yang,
> 
> > -----Original Message-----
> > From: Yang Shi [mailto:yang.shi@...aro.org]
> > Sent: Saturday, February 27, 2016 8:25 AM
> > To: jaegeuk@...nel.org; cm224.lee@...sung.com; chao2.yu@...sung.com; tglx@...utronix.de;
> > rostedt@...dmis.org; bigeasy@...utronix.de
> > Cc: linux-kernel@...r.kernel.org; linux-f2fs-devel@...ts.sourceforge.net;
> > linux-fsdevel@...r.kernel.org; linux-rt-users@...r.kernel.org;
> > linaro-kernel@...ts.linaro.org; yang.shi@...aro.org
> > Subject: [PATCH] f2fs: mutex can't be used by down_write_nest_lock()
> > 
> > fsf2_lock_all() calls down_write_nest_lock() to acquire a rw_sem and check

Fixed, and merged. :)

> 
> Nitpick, f2fs_lock_all().
> 
> Anyway, this patch looks good to me.
> 
> Reviewed-by: Chao Yu <chao2.yu@...sung.com>