On Tue, 18 Aug 2015, Mike Snitzer wrote: > On Tue, Aug 18 2015 at 4:26pm -0400, > Mikulas Patocka <mpatocka@xxxxxxxxxx> wrote: > > > Mike, please submit this patch to the upstream kernel before 4.2 is > > released, so that the all the kernels that support the options > > "precise_timestamps" and "histogram" also report these values back. > > It is really late to be sending pull requests for 4.2 (next release is > likely 4.2 final). I've already sent 6 'fixes' pull requests to Linus > for 4.2. This patch is just too late, sorry. > > But what I will do is tag this commit for 4.2-stable inclusion. > > Userspace will have to check the DM ioctl version to know if DM provides > these extra keywords. > > Mike But if you don't send it, userspace will forever have to deal with kernels that don't report this feature back. You can think that not reporting these features was a bug in the original design and this patch fixes the bug. Mikulas -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
