linux-kernel - Re: [PATCH v2] mm/zsmalloc: add statistics support

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Message-ID: <20141220005458.GA15630@blaptop>
Date:	Sat, 20 Dec 2014 09:54:58 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Ganesh Mahendran <opensource.ganesh@...il.com>, ngupta@...are.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mm/zsmalloc: add statistics support

On Sat, Dec 20, 2014 at 09:23:03AM +0900, Minchan Kim wrote:
> On Fri, Dec 19, 2014 at 04:17:56PM -0800, Andrew Morton wrote:
> > On Sat, 20 Dec 2014 09:10:43 +0900 Minchan Kim <minchan@...nel.org> wrote:
> > 
> > > > It involves rehashing a lengthy argument with Greg.
> > > 
> > > Okay. Then, Ganesh,
> > > please add warn message about duplicaed name possibility althoug
> > > it's unlikely as it is.
> > 
> > Oh, getting EEXIST is easy with this patch.  Just create and destroy a
> > pool 2^32 times and the counter wraps ;) It's hardly a serious issue
> > for a debugging patch.
> 
> I meant that I wanted to change from index to name passed from caller like this
> 
> zram:
> 	zs_create_pool(GFP_NOIO | __GFP_HIGHMEM, zram->disk->first_minor);

Correction for clear my intention

	sprintf(buf, "%zram%d", zram->disk->first_minor);
 	zs_create_pool(GFP_NOIO | __GFP_HIGHMEM, buf);
	
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