linux-kernel - Re: [PATCH v3] mm: remove compressed copy from zram in-memory

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Date:	Fri, 10 May 2013 17:44:13 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Konrad Rzeszutek Wilk <konrad@...nok.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Hugh Dickins <hughd@...gle.com>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Nitin Gupta <ngupta@...are.org>, Shaohua Li <shli@...nel.org>,
	Dan Magenheimer <dan.magenheimer@...cle.com>
Subject: Re: [PATCH v3] mm: remove compressed copy from zram in-memory

Hi Konrad,

On Thu, May 09, 2013 at 04:15:42PM -0400, Konrad Rzeszutek Wilk wrote:
> On Thu, May 09, 2013 at 08:41:57AM +0900, Minchan Kim wrote:
> 
> Hey Michan,
        ^-n

It's a only thing I can know better than other native speakers. :)

 
> Just a couple of syntax corrections. The code comment could also
> benefit from this.
> 
> Otherwise it looks OK to me.
> 
> > Swap subsystem does lazy swap slot free with expecting the page
>                      ^-a                       ^- the expectation that
> > would be swapped out again so we can avoid unnecessary write.
>                                 ^--that it
> > 
> > But the problem in in-memory swap(ex, zram) is that it consumes
>                   ^^-with
> > memory space until vm_swap_full(ie, used half of all of swap device)
> > condition meet. It could be bad if we use multiple swap device,
>            ^- 'is'   ^^^^^ - 'would'                       ^^^^^-devices                    
> > small in-memory swap and big storage swap or in-memory swap alone.
>                       ^-,                   ^-,
> > 
> > This patch makes swap subsystem free swap slot as soon as swap-read
> > is completed and make the swapcache page dirty so the page should
>                        ^-makes                      ^-'that the'
> > be written out the swap device to reclaim it.
> > It means we never lose it.
> > 
> > I tested this patch with kernel compile workload.
>                           ^-a

Thanks for the correct whole sentence!
But Andrew alreay correted it with his style.
Although he was done, I'm giving a million thanks to you.
Surely, Thanks Andrew, too.

-- 
Kind regards,
Minchan Kim
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