Messages in this thread | | | Date | Fri, 19 Jun 2015 02:02:39 -0700 | Subject | Re: [PATCH 12/15] libnvdimm: enable iostat | From | Dan Williams <> |
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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.
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