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Date: Fri, 29 May 2015 12:41:41 +0900
From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Subject: Re: [PATCH] zram: clear disk io accounting when reset zram device
Message-ID: <20150529034141.GA1157@swordfish>
References: <"000001d099be$fae6cc90$f0b465b0$@yang"@samsung.com>
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In-Reply-To: <"000001d099be$fae6cc90$f0b465b0$@yang"@samsung.com>
Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Weijie Yang <weijie.yang@samsung.com>
Cc: 'Minchan Kim' <minchan@kernel.org>, 'Andrew Morton' <akpm@linux-foundation.org>, sergey.senozhatsky.work@gmail.com, ngupta@vflare.org, 'Weijie Yang' <weijie.yang.kh@gmail.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org

On (05/29/15 11:23), Weijie Yang wrote:
> This patch clears zram disk io accounting when reset the zram device,
> if don't do this, the residual io accounting stat will affect the
> diskstat in the next zram active cycle.
> 

thanks. my bad.

Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>

	-ss

> Signed-off-by: Weijie Yang <weijie.yang@samsung.com>
> ---
>  drivers/block/zram/zram_drv.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
> index 8dcbced..6e134f4 100644
> --- a/drivers/block/zram/zram_drv.c
> +++ b/drivers/block/zram/zram_drv.c
> @@ -805,7 +805,9 @@ static void zram_reset_device(struct zram *zram)
>  	memset(&zram->stats, 0, sizeof(zram->stats));
>  	zram->disksize = 0;
>  	zram->max_comp_streams = 1;
> +
>  	set_capacity(zram->disk, 0);
> +	part_stat_set_all(&zram->disk->part0, 0);
>  
>  	up_write(&zram->init_lock);
>  	/* I/O operation under all of CPU are done so let's free */
> -- 
> 1.7.10.4
> 
> 

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