From: Matthew Wilcox <willy@infradead.org>
To: Wei Wang <wei.w.wang@intel.com>
Cc: "yang.zhang.wz@gmail.com" <yang.zhang.wz@gmail.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"mst@redhat.com" <mst@redhat.com>,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
"liliang.opensource@gmail.com" <liliang.opensource@gmail.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"aarcange@redhat.com" <aarcange@redhat.com>,
"virtio-dev@lists.oasis-open.org"
<virtio-dev@lists.oasis-open.org>,
"mawilcox@microsoft.com" <mawilcox@microsoft.com>,
"nilal@redhat.com" <nilal@redhat.com>,
"riel@redhat.com" <riel@redhat.com>,
"cornelia.huck@de.ibm.com" <cornelia.huck@de.ibm.com>,
"mhocko@kernel.org" <mhocko@kernel.org>,
"quan.xu0@gmail.com" <quan.xu0@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
amit.sh
Subject: Re: [PATCH v20 0/7] Virtio-balloon Enhancement
Date: Thu, 21 Dec 2017 04:14:37 -0800 [thread overview]
Message-ID: <20171221121437.GA22405__36117.0130120174$1513858392$gmane$org@bombadil.infradead.org> (raw)
In-Reply-To: <5A3B2148.8050306@intel.com>
On Thu, Dec 21, 2017 at 10:49:44AM +0800, Wei Wang wrote:
> On 12/21/2017 01:10 AM, Matthew Wilcox wrote:
> One more question is about the return value, why would it be ambiguous? I
> think it is the same as find_next_bit() which returns the found bit or size
> if not found.
Because find_next_bit doesn't reasonably support a bitmap which is
ULONG_MAX in size. The point of XBitmap is to support a bitmap which
is ULONG_MAX in size, so every possible return value is a legitimate
"we found a bit here". There's no value which can possibly be used for
"no bit was found".
next prev parent reply other threads:[~2017-12-21 12:14 UTC|newest]
Thread overview: 144+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-19 12:17 [PATCH v20 0/7] Virtio-balloon Enhancement Wei Wang
2017-12-19 12:17 ` [virtio-dev] " Wei Wang
2017-12-19 12:17 ` [Qemu-devel] " Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` [PATCH v20 1/7] xbitmap: Introduce xbitmap Wei Wang
2017-12-19 12:17 ` [virtio-dev] " Wei Wang
2017-12-19 12:17 ` [Qemu-devel] " Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 15:58 ` Philippe Ombredanne
2017-12-19 15:58 ` [Qemu-devel] " Philippe Ombredanne
2017-12-19 15:58 ` Philippe Ombredanne
2017-12-19 15:58 ` Philippe Ombredanne
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` [PATCH v20 2/7] xbitmap: potential improvement Wei Wang
2017-12-19 12:17 ` [virtio-dev] " Wei Wang
2017-12-19 12:17 ` [Qemu-devel] " Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` [PATCH v20 3/7] xbitmap: add more operations Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` [virtio-dev] " Wei Wang
2017-12-19 12:17 ` [Qemu-devel] " Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` [PATCH v20 4/7] virtio-balloon: VIRTIO_BALLOON_F_SG Wei Wang
2017-12-19 12:17 ` [virtio-dev] " Wei Wang
2017-12-19 12:17 ` [Qemu-devel] " Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-24 3:21 ` Matthew Wilcox
2017-12-24 3:21 ` [Qemu-devel] " Matthew Wilcox
2017-12-24 3:21 ` Matthew Wilcox
2017-12-24 3:21 ` Matthew Wilcox
2017-12-24 4:45 ` Tetsuo Handa
2017-12-24 4:45 ` [Qemu-devel] " Tetsuo Handa
2017-12-24 4:45 ` Tetsuo Handa
2017-12-24 7:42 ` Wei Wang
2017-12-24 7:42 ` Wei Wang
2017-12-24 7:42 ` [virtio-dev] " Wei Wang
2017-12-24 7:42 ` [Qemu-devel] " Wei Wang
2017-12-24 7:42 ` Wei Wang
2017-12-24 8:16 ` [virtio-dev] " Wei Wang
2017-12-24 8:16 ` Wei Wang
2017-12-24 8:16 ` Wei Wang
2017-12-24 8:16 ` [Qemu-devel] " Wei Wang
2017-12-24 8:16 ` Wei Wang
2017-12-25 14:51 ` Tetsuo Handa
2017-12-25 14:51 ` [Qemu-devel] " Tetsuo Handa
2017-12-25 14:51 ` Tetsuo Handa
2017-12-26 3:06 ` Wei Wang
2017-12-26 3:06 ` [virtio-dev] " Wei Wang
2017-12-26 3:06 ` [Qemu-devel] " Wei Wang
2017-12-26 3:06 ` Wei Wang
2017-12-26 10:38 ` Tetsuo Handa
2017-12-26 10:38 ` [Qemu-devel] " Tetsuo Handa
2017-12-26 10:38 ` Tetsuo Handa
2017-12-26 11:36 ` Wei Wang
2017-12-26 11:36 ` Wei Wang
2017-12-26 11:36 ` [virtio-dev] " Wei Wang
2017-12-26 11:36 ` [Qemu-devel] " Wei Wang
2017-12-26 11:36 ` Wei Wang
2017-12-26 13:40 ` Tetsuo Handa
2017-12-26 13:40 ` [Qemu-devel] " Tetsuo Handa
2017-12-26 13:40 ` Tetsuo Handa
2017-12-26 3:06 ` Wei Wang
2018-01-02 13:24 ` Matthew Wilcox
2018-01-02 13:24 ` [Qemu-devel] " Matthew Wilcox
2018-01-02 13:24 ` Matthew Wilcox
2018-01-03 2:29 ` Tetsuo Handa
2018-01-03 2:29 ` [Qemu-devel] " Tetsuo Handa
2018-01-03 2:29 ` Tetsuo Handa
2018-01-03 9:00 ` Wei Wang
2018-01-03 9:00 ` [virtio-dev] " Wei Wang
2018-01-03 9:00 ` [Qemu-devel] " Wei Wang
2018-01-03 9:00 ` Wei Wang
2018-01-03 10:19 ` Tetsuo Handa
2018-01-03 10:19 ` [Qemu-devel] " Tetsuo Handa
2018-01-03 10:19 ` Tetsuo Handa
2018-01-03 9:00 ` Wei Wang
2018-01-02 13:24 ` Matthew Wilcox
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` [PATCH v20 5/7] mm: support reporting free page blocks Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` [virtio-dev] " Wei Wang
2017-12-19 12:17 ` [Qemu-devel] " Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` [PATCH v20 6/7] virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_VQ Wei Wang
2017-12-19 12:17 ` [virtio-dev] " Wei Wang
2017-12-19 12:17 ` [Qemu-devel] " Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` [PATCH v20 7/7] virtio-balloon: don't report free pages when page poisoning is enabled Wei Wang
2017-12-19 12:17 ` [virtio-dev] " Wei Wang
2017-12-19 12:17 ` [Qemu-devel] " Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 12:17 ` Wei Wang
2017-12-19 14:05 ` [PATCH v20 0/7] Virtio-balloon Enhancement Tetsuo Handa
2017-12-19 14:05 ` [Qemu-devel] " Tetsuo Handa
2017-12-19 14:05 ` Tetsuo Handa
2017-12-19 14:40 ` Matthew Wilcox
2017-12-19 14:40 ` Matthew Wilcox
2017-12-19 14:40 ` [Qemu-devel] " Matthew Wilcox
2017-12-19 14:40 ` Matthew Wilcox
2017-12-20 2:33 ` Tetsuo Handa
2017-12-20 2:33 ` [Qemu-devel] " Tetsuo Handa
2017-12-20 2:33 ` Tetsuo Handa
2017-12-19 18:08 ` Michael S. Tsirkin
2017-12-19 18:08 ` [virtio-dev] " Michael S. Tsirkin
2017-12-19 18:08 ` [Qemu-devel] " Michael S. Tsirkin
2017-12-19 18:08 ` Michael S. Tsirkin
2017-12-19 18:08 ` Michael S. Tsirkin
2017-12-20 10:34 ` Wei Wang
2017-12-20 10:34 ` [virtio-dev] " Wei Wang
2017-12-20 10:34 ` [Qemu-devel] " Wei Wang
2017-12-20 10:34 ` Wei Wang
2017-12-20 12:25 ` Matthew Wilcox
2017-12-20 12:25 ` Matthew Wilcox
2017-12-20 12:25 ` [Qemu-devel] " Matthew Wilcox
2017-12-20 12:25 ` Matthew Wilcox
2017-12-20 16:13 ` Wang, Wei W
2017-12-20 16:13 ` Wang, Wei W
2017-12-20 16:13 ` [virtio-dev] " Wang, Wei W
2017-12-20 16:13 ` [Qemu-devel] " Wang, Wei W
2017-12-20 16:13 ` Wang, Wei W
2017-12-20 16:13 ` Wang, Wei W
2017-12-20 17:10 ` Matthew Wilcox
2017-12-20 17:10 ` Matthew Wilcox
2017-12-20 17:10 ` [Qemu-devel] " Matthew Wilcox
2017-12-20 17:10 ` Matthew Wilcox
2017-12-20 17:10 ` Matthew Wilcox
2017-12-21 2:49 ` Wei Wang
2017-12-21 2:49 ` Wei Wang
2017-12-21 2:49 ` [virtio-dev] " Wei Wang
2017-12-21 2:49 ` [Qemu-devel] " Wei Wang
2017-12-21 2:49 ` Wei Wang
2017-12-21 2:49 ` Wei Wang
2017-12-21 12:14 ` Matthew Wilcox [this message]
2017-12-21 12:14 ` Matthew Wilcox
2017-12-21 12:14 ` [Qemu-devel] " Matthew Wilcox
2017-12-21 12:14 ` Matthew Wilcox
2017-12-21 12:14 ` Matthew Wilcox
2017-12-21 12:56 ` Tetsuo Handa
2017-12-21 12:56 ` [Qemu-devel] " Tetsuo Handa
2017-12-21 12:56 ` Tetsuo Handa
2017-12-20 10:34 ` Wei Wang
2017-12-19 12:17 Wei Wang
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