From: Richard Weinberger <richard@nod.at>
Date: Sat, 10 Jan 2015 21:52:14 +0000 (+0100)
Subject: UBI: Block: Add blk-mq support
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~87^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff1f48ee3bb3af226f1f8993af0103794b4d4eab;p=pandora-kernel.git

UBI: Block: Add blk-mq support

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@debian-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@debian-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@infradead.org
Cc: axboe@fb.com
Cc: tom.leiming@gmail.com
Signed-off-by: Richard Weinberger <richard@nod.at>
Tested-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Reviewed-by: Jens Axboe <axboe@fb.com>
Acked-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
---

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