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 <[email protected]>
> Cc: Jeff Garzik <[email protected]>
> Signed-off-by: Paolo Bonzini <[email protected]>
> ---
> 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