Re: [PATCH 12/15] libnvdimm: enable iostat

Dan Williams
2015-06-21T13:22:33Z

On Sun, Jun 21, 2015 at 3:11 AM, Christoph Hellwig <hch@lst.de> wrote:
> On Fri, Jun 19, 2015 at 02:02:39AM -0700, Dan Williams wrote:
>> On Fri, Jun 19, 2015 at 1:34 AM, Christoph Hellwig <hch@lst.de> wrote:
>> > On Wed, Jun 17, 2015 at 07:55:51PM -0400, Dan Williams wrote:
>> >> This is disabled by default as the overhead is prohibitive, but if the
>> >> user takes the action to turn it on we'll oblige.
>> >
>> > If you care about users a compile time selection doesn't make sense,
>> > why not always build it but require an opt-in?
>>
>> It's always built the Kconfig just selects the default initial state
>> of QUEUE_FLAG_IO_STAT. They can always turn it on/off via block queue
>> sysfs.
>
> Oh, missed that. Just drop the Kconfig option in that case.

Ok.
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