Re: [PATCH] mm: get rid of __alloc_pages_high_priority

From: Michal Hocko
Date: Fri Nov 13 2015 - 04:17:01 EST

On Thu 12-11-15 12:47:45, David Rientjes wrote:
> On Thu, 12 Nov 2015, mhocko@xxxxxxxxxx wrote:
> > Hi,
> > I think that this is more a cleanup than any functional change. We
> > are rarely screwed so much that __alloc_pages_high_priority would
> > fail. Yet I think that __alloc_pages_high_priority is obscuring the
> > overal intention more than it is helpful. Another motivation is to
> > reduce wait_iff_congested call to a single one in the allocator. I plan
> > to do other changes in that area and get rid of it altogether.
> I think it's a combination of a cleanup (the inlining of
> __alloc_pages_high_priority) and a functional change (no longer looping
> infinitely around a get_page_from_freelist() call). I'd suggest doing the
> inlining in one patch and then the reworking of __GFP_NOFAIL when
> ALLOC_NO_WATERMARKS fails just so we could easily revert the latter if
> necessary.

I can split it up if this is really preferable of course.
Michal Hocko
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