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

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Date:	Tue, 01 Mar 2016 16:59:39 +0800
From:	Chao Yu <chao2.yu@...sung.com>
To:	'Yang Shi' <yang.shi@...aro.org>, jaegeuk@...nel.org,
	cm224.lee@...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
Subject: RE: [PATCH] f2fs: mutex can't be used by down_write_nest_lock()

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

Nitpick, f2fs_lock_all().

Anyway, this patch looks good to me.

Reviewed-by: Chao Yu <chao2.yu@...sung.com>