Subject: Re: [PATCH] ps3/block: Replace mtd/ps3vram by block/ps3vram

From: Geoff Levand <[email-masked]>
Date: Mon, 9 Mar 2009 10:51:43 -0700

On 03/06/2009 04:54 AM, Geert Uytterhoeven wrote:
> Convert the PS3 Video RAM Storage Driver from an MTD driver to a plain block
> device driver.
> 
> The ps3vram driver exposes unused video RAM on the PS3 as a block device
> suitable for storage or swap.  Fast data transfer is achieved using a local
> cache in system RAM and DMA transfers via the GPU.
> 
> The new driver is ca. 50% faster for reading, and ca. 10% for writing.
> 
>  arch/powerpc/platforms/ps3/Kconfig |    7 +
>  drivers/block/Makefile             |    1 +
>  drivers/block/ps3vram.c            |  865 ++++++++++++++++++++++++++++++++++++
>  drivers/mtd/devices/Kconfig        |    7 -
>  drivers/mtd/devices/Makefile       |    1 -
>  drivers/mtd/devices/ps3vram.c      |  768 --------------------------------
>  6 files changed, 873 insertions(+), 776 deletions(-)
>  create mode 100644 drivers/block/ps3vram.c
>  delete mode 100644 drivers/mtd/devices/ps3vram.c

Looks good, certainly an improvement.

Acked-by: Geoff Levand <[email-masked]>