On Wed, Nov 25, 2020 at 05:28:32PM +0100, Daniel Vetter wrote: > On Wed, Nov 25, 2020 at 5:25 PM Daniel Vetter <daniel.vetter@xxxxxxxx> wrote: > > > > Random observation while trying to review Christian's patch series to > > stop looking at struct page for dma-buf imports. > > > > This was originally added in > > > > commit 58aa6622d32af7d2c08d45085f44c54554a16ed7 > > Author: Thomas Hellstrom <thellstrom@xxxxxxxxxx> > > Date: Fri Jan 3 11:47:23 2014 +0100 > > > > drm/ttm: Correctly set page mapping and -index members > > > > Needed for some vm operations; most notably unmap_mapping_range() with > > even_cows = 0. > > > > Signed-off-by: Thomas Hellstrom <thellstrom@xxxxxxxxxx> > > Reviewed-by: Brian Paul <brianp@xxxxxxxxxx> > > > > but we do not have a single caller of unmap_mapping_range with > > even_cows == 0. And all the gem drivers don't do this, so another > > small thing we could standardize between drm and ttm drivers. > > > > Plus I don't really see a need for unamp_mapping_range where we don't > > want to indiscriminately shoot down all ptes. > > > > Cc: Thomas Hellstrom <thellstrom@xxxxxxxxxx> > > Cc: Brian Paul <brianp@xxxxxxxxxx> > > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> > > Cc: Christian Koenig <christian.koenig@xxxxxxx> > > Cc: Huang Rui <ray.huang@xxxxxxx> > > Apologies again, this shouldn't have been included. But at least I > have an idea now why this patch somehow was included in the git > send-email. Lovely interface :-/ I wrote a bit of a script around this because git send-email just too hard to use The key workflow change I made was to have it prepare all the emails to send and open them in an editor for review - exactly as they would be sent to the lists. It uses a empty 'cover-letter' commit and automatically transforms it into exactly the right stuff. Keeps track of everything you send in git, and there is a little tool to auto-run git range-diff to help build change logs.. https://github.com/jgunthorpe/Kernel-Maintainer-Tools/blob/master/gj_tools/cmd_send_patches.py I've been occasionaly wondering if I should suggest Konstantin add a sending side to b4, maybe using some of those ideas.. (careful if you run it, it does autosend without prompting) Jason
