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SubjectRe: [PATCH v2 1/1] mmc: block: Add write packing control
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On Mon, Jun 11, 2012 at 2:19 PM, Muthu Kumar <muthu.lkml@gmail.com> wrote:
> On Fri, Jun 1, 2012 at 11:55 AM, Maya Erez <merez@codeaurora.org> wrote:
>> The write packing control will ensure that read requests latency is
>> not increased due to long write packed commands.
>>
>> The trigger for enabling the write packing is managing to pack several
>> write requests. The number of potential packed requests that will trigger
>> the packing can be configured via sysfs by writing the required value to:
>> /sys/block/<block_dev_name>/num_wr_reqs_to_start_packing.
>> The trigger for disabling the write packing is fetching a read request.
>>
>
> If it is applicable only to MMC why do we have this sysfs attr for all
> block devices?

Just to be clear, please create a directory, say mmc, under
/sys/block/<dev>/ and create the attr inside that.

You can refer to dm (dm-sysfs.c) for sample implementation.

Regards,
Muthu


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