Re: [PATCH v3 2/2] ata: implement MODE SELECT command

[Jeff Garzik]

On 07/05/2012 08:18 AM, Paolo Bonzini wrote:
> The cache_type file in sysfs lets users configure the disk cache in
> write-through or write-back modes.  However, ata disks do not support
> writing to the file because they do not implement the MODE SELECT
> command.
>
> This patch adds a translation from MODE SELECT (for the caching page
> only) to the ATA SET FEATURES command.  The set of changeable parameters
> answered by MODE SENSE is also adjusted accordingly.
>
> Cc: Sergei Shtylyov <sshtylyov@xxxxxxxxxx>
> Cc: Jeff Garzik <jgarzik@xxxxxxxxx>
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> ---
> 	v2->v3: ensure that only the first page of the sg list is
> 	accessed
>
>   drivers/ata/libata-scsi.c |  194 +++++++++++++++++++++++++++++++++++++++++++--
>   1 files changed, 188 insertions(+), 6 deletions(-)

applied 1-2



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