[dm-devel] an optimization for dm-bufio and dm-integrity
Mike Snitzer
snitzer at redhat.com
Wed Jul 19 18:56:06 UTC 2017
On Wed, Jul 19 2017 at 12:22pm -0400,
Milan Broz <mbroz at redhat.com> wrote:
> On 07/19/2017 05:39 PM, Mike Snitzer wrote:
> > On Wed, Jul 19 2017 at 11:30P -0400,
> > Mikulas Patocka <mpatocka at redhat.com> wrote:
> >
> >> Hi Mike
> >>
> >> Some times ago, I sent this patch as dm-bufio optimization (it doesn't
> >> have to write full buffers, it only writes a part of the buffer that
> >> changed). You delayed the patch until the next kernel.
> >>
> >> Will you submit the patch to the current kernel?
> >
> > Sorry about that. It obviously fell off my radar.
> >
> > I'll review it and see if I can make the justification for it going into
> > 4.13-rc2. But unfortunately the 4.13 merge window closed this past
> > Sunday when Linus released v4.13-rc1
> >
> > I'll let you know though, thanks.
>
> Just FYI: I am just running some tests with the stack space fix and
> this patch and the performance improvement for 4k sectors is really big
> (compared to 4.12).
If you could quantify the performance improvement that would be helpful.
Are you also using the plugging patch?
More information about the dm-devel
mailing list