[PATCH 04/65] mm: Extract might_alloc() debug check

[Daniel Vetter]

On Fri, Oct 23, 2020 at 4:37 PM Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
>
> On Fri, Oct 23, 2020 at 4:16 PM Matthew Wilcox <willy at infradead.org> wrote:
> >
> > On Fri, Oct 23, 2020 at 02:21:15PM +0200, Daniel Vetter wrote:
> > > Note that unlike fs_reclaim_acquire/release gfpflags_allow_blocking
> > > does not consult the PF_MEMALLOC flags. But there is no flag
> > > equivalent for GFP_NOWAIT, hence this check can't go wrong due to
> > > memalloc_no*_save/restore contexts.
> >
> > I have a patch series that adds memalloc_nowait_save/restore.
>
> tbh this was a typoed git send-email, but thanks for the heads-up,
> I'll adjust the patch accordingly.

On 2nd thought I think your patch should update
gfpflags_allow_blocking to take into account the new ->memalloc_nowait
flag you're adding. I'll comment over there in that thread.
-Daniel

>
> > https://lore.kernel.org/linux-mm/20200625113122.7540-7-willy@infradead.org/
>
>
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch



-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch