linux-kernel - Re: [PATCH 3/3] zram: get rid of lockdep warning

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Message-ID: <20121129013441.GB24077@blaptop>
Date:	Thu, 29 Nov 2012 10:34:41 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Jerome Marchand <jmarchan@...hat.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Nitin Gupta <ngupta@...are.org>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Konrad Rzeszutek Wilk <konrad@...nok.org>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: [PATCH 3/3] zram: get rid of lockdep warning

On Wed, Nov 28, 2012 at 03:54:45PM +0100, Jerome Marchand wrote:
> On 11/28/2012 03:35 AM, Minchan Kim wrote:
> > Lockdep complains about recursive deadlock of zram->init_lock.
> > [1] made it false positive because we can't request IO to zram
> > before setting disksize. Anyway, we should shut lockdep up to
> > avoid many reporting from user.
> > 
> > This patch allocates zram's metadata out of lock so we can fix it.
> 
> Is that me or the functions zram_meta_alloc/free are missing?

Who bite my zram_meta_alloc/free? :)
Will resend with your suggestion for removing GFP_ATOMIC.

Thanks!

> 
> Regards,
> Jerome
-- 
Kind regards,
Minchan Kim
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