Messages in this thread | | | Date | Thu, 12 Jul 2018 10:21:58 +0800 | From | Wei Wang <> | Subject | Re: [PATCH v35 1/5] mm: support to get hints of free page blocks |
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On 07/12/2018 12:23 AM, Linus Torvalds wrote: > On Wed, Jul 11, 2018 at 2:21 AM Michal Hocko <mhocko@kernel.org> wrote: >> We already have an interface for that. alloc_pages(GFP_NOWAIT, MAX_ORDER -1). >> So why do we need any array based interface? > That was actually my original argument in the original thread - that > the only new interface people might want is one that just tells how > many of those MAX_ORDER-1 pages there are. > > See the thread in v33 with the subject > > "[PATCH v33 1/4] mm: add a function to get free page blocks" > > and look for me suggesting just using > > #define GFP_MINFLAGS (__GFP_NORETRY | __GFP_NOWARN | > __GFP_THISNODE | __GFP_NOMEMALLOC)
Would it be better to remove __GFP_THISNODE? We actually want to get all the guest free pages (from all the nodes).
Best, Wei
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