On Mon, 14 Jun 2021 13:58:09 -0700 Peter Collingbourne <pcc@xxxxxxxxxx> wrote: > > The -mm tree is included into linux-next and is updated > > there every 3-4 working days > > > > ------------------------------------------------------ > > From: Peter Collingbourne <pcc@xxxxxxxxxx> > > Subject: mm: improve mprotect(R|W) efficiency on pages referenced once > > > > add comments, prohibit optimization for NUMA pages > > Hi Andrew, > > I was wondering why this was added as a separate patch instead of > being combined into the previous one. It seems like combining the > patches will be less likely to cause issues in the future (e.g. > someone cherry-picks the v4 patch but not the v4->v5 patch and ends up > breaking NUMA). I usually do this when sent a replacement patch. So that I and others can see what changed, so that bisection can determine whether the new version caused problems, etc, etc. I'll collapse the follow-on patches back into the base patch (with suitable metadata in the changelog to show what happened) prior to sending to Linus.
