linux-kernel - Re: [PATCH 2/2 v2] UBI: Block: Add blk-mq support

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Date:	Tue, 27 Jan 2015 20:37:49 -0300
From:	Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:	Richard Weinberger <richard@....at>, dedekind1@...il.com
CC:	dwmw2@...radead.org, computersforpeace@...il.com,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
	hch@...radead.org, axboe@...com, tom.leiming@...il.com
Subject: Re: [PATCH 2/2 v2] UBI: Block: Add blk-mq support

On 01/10/2015 06:52 PM, Richard Weinberger wrote:
> Convert the driver to blk-mq.
> Beside of moving to the modern block interface this change boosts
> also the performance of the driver.
> 
> nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
> nand: Micron NAND 256MiB 3,3V 8-bit
> nand: 256MiB, SLC, page size: 2048, OOB size: 64
> 
> root@...ian-armhf:~# dd if=/dev/ubiblock0_0 of=/dev/zero bs=1M
> 243+1 records in
> 243+1 records out
> 255080448 bytes (255 MB) copied, 4.39295 s, 58.1 MB/s
> 
> vs.
> 
> root@...ian-armhf:~# dd if=/dev/ubiblock0_0 of=/dev/zero bs=1M
> 243+1 records in
> 243+1 records out
> 255080448 bytes (255 MB) copied, 2.87676 s, 88.7 MB/s
> 
> Cc: hch@...radead.org
> Cc: axboe@...com
> Cc: tom.leiming@...il.com
> Signed-off-by: Richard Weinberger <richard@....at>
> Tested-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>

Acked-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>

And thanks a lot for the good work!

-- 
Ezequiel Garcia, VanguardiaSur
www.vanguardiasur.com.ar
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