On Wed, Oct 21, 2020 at 1:57 AM Daniel Vetter <daniel.vetter@xxxxxxxx> wrote: > > When we care about pagecache maintenance, we need to make sure that > both f_mapping and i_mapping point at the right mapping. > > But for iomem mappings we only care about the virtual/pte side of > things, so f_mapping is enough. Also setting inode->i_mapping was > confusing me as a driver maintainer, since in e.g. drivers/gpu we > don't do that. Per Dan this seems to be copypasta from places which do > care about pagecache consistency, but not needed. Hence remove it for > slightly less confusion. > > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> > Cc: Jason Gunthorpe <jgg@xxxxxxxx> > Cc: Kees Cook <keescook@xxxxxxxxxxxx> > Cc: Dan Williams <dan.j.williams@xxxxxxxxx> > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Cc: John Hubbard <jhubbard@xxxxxxxxxx> > Cc: Jérôme Glisse <jglisse@xxxxxxxxxx> > Cc: Jan Kara <jack@xxxxxxx> > Cc: Dan Williams <dan.j.williams@xxxxxxxxx> Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
