On Tue, Jun 26 2018 at 2:52pm -0400, Dan Williams <dan.j.williams@xxxxxxxxx> wrote: > On Tue, Jun 26, 2018 at 10:59 AM, Ross Zwisler > <ross.zwisler@xxxxxxxxxxxxxxx> wrote: > > QUEUE_FLAG_DAX is an indication that a given block device supports > > filesystem DAX and should not be set for PMEM namespaces which are in "raw" > > or "sector" modes. These namespaces lack struct page and are prevented > > from participating in filesystem DAX. > > > > Signed-off-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> > > Suggested-by: Mike Snitzer <snitzer@xxxxxxxxxx> > > Cc: stable@xxxxxxxxxxxxxxx > > Why is this cc: stable? What is the user visible impact of this change > especially given the requirement to validate QUEUE_FLAG_DAX with > bdev_dax_supported()? Patch looks good, but it's just a cosmetic fixup > afaics. This isn't cosmetic when you consider that stacking up a DM device is looking at this flag to determine whether a table does or does _not_ support DAX. So this patch, in conjunction with the other changes in the series, is certainly something I'd consider appropriate for stable. Mike
