From: Wei Wang <wei.w.wang@intel.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Michal Hocko <mhocko@kernel.org>
Cc: virtio-dev@lists.oasis-open.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
virtualization <virtualization@lists.linux-foundation.org>,
KVM list <kvm@vger.kernel.org>, linux-mm <linux-mm@kvack.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Paolo Bonzini <pbonzini@redhat.com>,
liliang.opensource@gmail.com, yang.zhang.wz@gmail.com,
quan.xu0@gmail.com, nilal@redhat.com,
Rik van Riel <riel@redhat.com>,
peterx@redhat.com
Subject: [virtio-dev] Re: [PATCH v35 1/5] mm: support to get hints of free page blocks
Date: Thu, 12 Jul 2018 10:21:58 +0800 [thread overview]
Message-ID: <5B46BB46.2080802@intel.com> (raw)
In-Reply-To: <CA+55aFwku2tDH4+rfaC67xc4-cEwSrXgnQaci=e2id5ZCRE9JQ@mail.gmail.com>
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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WARNING: multiple messages have this Message-ID (diff)
From: Wei Wang <wei.w.wang@intel.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Michal Hocko <mhocko@kernel.org>
Cc: virtio-dev@lists.oasis-open.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
virtualization <virtualization@lists.linux-foundation.org>,
KVM list <kvm@vger.kernel.org>, linux-mm <linux-mm@kvack.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Paolo Bonzini <pbonzini@redhat.com>,
liliang.opensource@gmail.com, yang.zhang.wz@gmail.com,
quan.xu0@gmail.com, nilal@redhat.com,
Rik van Riel <riel@redhat.com>,
peterx@redhat.com
Subject: Re: [PATCH v35 1/5] mm: support to get hints of free page blocks
Date: Thu, 12 Jul 2018 10:21:58 +0800 [thread overview]
Message-ID: <5B46BB46.2080802@intel.com> (raw)
In-Reply-To: <CA+55aFwku2tDH4+rfaC67xc4-cEwSrXgnQaci=e2id5ZCRE9JQ@mail.gmail.com>
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
next prev parent reply other threads:[~2018-07-12 2:17 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-10 9:31 [virtio-dev] [PATCH v35 0/5] Virtio-balloon: support free page reporting Wei Wang
2018-07-10 9:31 ` Wei Wang
2018-07-10 9:31 ` Wei Wang
2018-07-10 9:31 ` [PATCH v35 1/5] mm: support to get hints of free page blocks Wei Wang
2018-07-10 9:31 ` [virtio-dev] " Wei Wang
2018-07-10 9:31 ` Wei Wang
2018-07-10 10:16 ` [virtio-dev] " Wang, Wei W
2018-07-10 10:16 ` Wang, Wei W
2018-07-10 10:16 ` Wang, Wei W
2018-07-10 17:33 ` Linus Torvalds
2018-07-10 17:33 ` Linus Torvalds
2018-07-11 1:28 ` [virtio-dev] " Wei Wang
2018-07-11 1:28 ` Wei Wang
2018-07-11 1:44 ` Linus Torvalds
2018-07-11 9:21 ` Michal Hocko
2018-07-11 9:21 ` Michal Hocko
2018-07-11 10:52 ` [virtio-dev] " Wei Wang
2018-07-11 10:52 ` Wei Wang
2018-07-11 10:52 ` Wei Wang
2018-07-11 11:09 ` Michal Hocko
2018-07-11 11:09 ` Michal Hocko
2018-07-11 13:55 ` Wang, Wei W
2018-07-11 13:55 ` [virtio-dev] " Wang, Wei W
2018-07-11 13:55 ` Wang, Wei W
2018-07-11 14:38 ` Michal Hocko
2018-07-11 14:38 ` Michal Hocko
2018-07-11 19:36 ` [virtio-dev] " Michael S. Tsirkin
2018-07-11 19:36 ` Michael S. Tsirkin
2018-07-11 19:36 ` Michael S. Tsirkin
2018-07-11 16:23 ` Linus Torvalds
2018-07-12 2:21 ` Wei Wang [this message]
2018-07-12 2:21 ` Wei Wang
2018-07-12 2:30 ` Linus Torvalds
2018-07-12 2:30 ` Linus Torvalds
2018-07-12 2:52 ` [virtio-dev] " Wei Wang
2018-07-12 2:52 ` Wei Wang
2018-07-12 2:52 ` Wei Wang
2018-07-12 8:13 ` Michal Hocko
2018-07-12 11:34 ` [virtio-dev] " Wei Wang
2018-07-12 11:34 ` Wei Wang
2018-07-12 11:49 ` Michal Hocko
2018-07-12 11:49 ` Michal Hocko
2018-07-13 0:33 ` [virtio-dev] " Wei Wang
2018-07-13 0:33 ` Wei Wang
2018-07-13 0:33 ` Wei Wang
2018-07-12 11:34 ` Wei Wang
2018-07-12 8:13 ` Michal Hocko
2018-07-12 2:21 ` Wei Wang
2018-07-12 13:12 ` Michal Hocko
2018-07-12 13:12 ` Michal Hocko
2018-07-11 16:23 ` Linus Torvalds
2018-07-11 1:44 ` Linus Torvalds
2018-07-11 1:28 ` Wei Wang
2018-07-11 4:00 ` [virtio-dev] " Michael S. Tsirkin
2018-07-11 4:00 ` Michael S. Tsirkin
2018-07-11 4:04 ` [virtio-dev] " Michael S. Tsirkin
2018-07-11 4:04 ` Michael S. Tsirkin
2018-07-11 4:04 ` Michael S. Tsirkin
2018-07-11 4:00 ` Michael S. Tsirkin
2018-07-10 9:31 ` [PATCH v35 2/5] virtio-balloon: remove BUG() in init_vqs Wei Wang
2018-07-10 9:31 ` [virtio-dev] " Wei Wang
2018-07-10 9:31 ` Wei Wang
2018-07-10 9:31 ` [PATCH v35 3/5] virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT Wei Wang
2018-07-10 9:31 ` [virtio-dev] " Wei Wang
2018-07-10 9:31 ` Wei Wang
2018-07-10 9:31 ` [PATCH v35 4/5] mm/page_poison: expose page_poisoning_enabled to kernel modules Wei Wang
2018-07-10 9:31 ` [virtio-dev] " Wei Wang
2018-07-10 9:31 ` Wei Wang
2018-07-10 9:31 ` [virtio-dev] [PATCH v35 5/5] virtio-balloon: VIRTIO_BALLOON_F_PAGE_POISON Wei Wang
2018-07-10 9:31 ` Wei Wang
2018-07-10 9:31 ` Wei Wang
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