Displaying 20 results from an estimated 193 matches for "tetsuo".
2017 Sep 11
6
mm, virtio: possible OOM lockup at virtballoon_oom_notify()
Hello.
I noticed that virtio_balloon is using register_oom_notifier() and
leak_balloon() from virtballoon_oom_notify() might depend on
__GFP_DIRECT_RECLAIM memory allocation.
In leak_balloon(), mutex_lock(&vb->balloon_lock) is called in order to
serialize against fill_balloon(). But in fill_balloon(),
alloc_page(GFP_HIGHUSER[_MOVABLE] | __GFP_NOMEMALLOC | __GFP_NORETRY) is
called with
2017 Sep 11
6
mm, virtio: possible OOM lockup at virtballoon_oom_notify()
Hello.
I noticed that virtio_balloon is using register_oom_notifier() and
leak_balloon() from virtballoon_oom_notify() might depend on
__GFP_DIRECT_RECLAIM memory allocation.
In leak_balloon(), mutex_lock(&vb->balloon_lock) is called in order to
serialize against fill_balloon(). But in fill_balloon(),
alloc_page(GFP_HIGHUSER[_MOVABLE] | __GFP_NOMEMALLOC | __GFP_NORETRY) is
called with
2018 Aug 06
1
[PATCH v3 2/2] virtio_balloon: replace oom notifier with shrinker
On 2018/08/06 21:44, Wang, Wei W wrote:
> On Monday, August 6, 2018 6:29 PM, Tetsuo Handa wrote:
>> On 2018/08/06 18:56, Wei Wang wrote:
>>> On 08/03/2018 08:11 PM, Tetsuo Handa wrote:
>>>> On 2018/08/03 17:32, Wei Wang wrote:
>>>>> +static int virtio_balloon_register_shrinker(struct virtio_balloon
>>>>> +*vb) {
>>>...
2018 Aug 06
2
[PATCH v3 2/2] virtio_balloon: replace oom notifier with shrinker
On 2018/08/06 18:56, Wei Wang wrote:
> On 08/03/2018 08:11 PM, Tetsuo Handa wrote:
>> On 2018/08/03 17:32, Wei Wang wrote:
>>> +static int virtio_balloon_register_shrinker(struct virtio_balloon *vb)
>>> +{
>>> +??? vb->shrinker.scan_objects = virtio_balloon_shrinker_scan;
>>> +??? vb->shrinker.count_objects = virtio_bal...
2018 Aug 06
2
[PATCH v3 2/2] virtio_balloon: replace oom notifier with shrinker
On 2018/08/06 18:56, Wei Wang wrote:
> On 08/03/2018 08:11 PM, Tetsuo Handa wrote:
>> On 2018/08/03 17:32, Wei Wang wrote:
>>> +static int virtio_balloon_register_shrinker(struct virtio_balloon *vb)
>>> +{
>>> +??? vb->shrinker.scan_objects = virtio_balloon_shrinker_scan;
>>> +??? vb->shrinker.count_objects = virtio_bal...
2015 Feb 06
1
[PATCH] virtio: Avoid possible kernel panic if DEBUG is enabled.
>From 11fd997d724f520ca628615e7ffbfd7901c40b62 Mon Sep 17 00:00:00 2001
From: Tetsuo Handa <penguin-kernel at I-love.SAKURA.ne.jp>
Date: Fri, 6 Feb 2015 13:28:38 +0900
Subject: [PATCH] virtio: Avoid possible kernel panic if DEBUG is enabled.
The virtqueue_add() calls START_USE() upon entry. The virtqueue_kick() is
called if vq->num_added == (1 << 16) - 1 before call...
2015 Feb 06
1
[PATCH] virtio: Avoid possible kernel panic if DEBUG is enabled.
>From 11fd997d724f520ca628615e7ffbfd7901c40b62 Mon Sep 17 00:00:00 2001
From: Tetsuo Handa <penguin-kernel at I-love.SAKURA.ne.jp>
Date: Fri, 6 Feb 2015 13:28:38 +0900
Subject: [PATCH] virtio: Avoid possible kernel panic if DEBUG is enabled.
The virtqueue_add() calls START_USE() upon entry. The virtqueue_kick() is
called if vq->num_added == (1 << 16) - 1 before call...
2017 Oct 02
0
[RFC] [PATCH] mm,oom: Offload OOM notify callback to a kernel thread.
On Mon 02-10-17 20:33:52, Tetsuo Handa wrote:
> Michal Hocko wrote:
> > [Hmm, I do not see the original patch which this has been a reply to]
>
> urbl.hostedemail.com and b.barracudacentral.org blocked my IP address,
> and the rest are "Recipient address rejected: Greylisted" or
> "Deferred: 45...
2013 Oct 31
9
[Bug 2167] New: Connection remains when fork() fails.
https://bugzilla.mindrot.org/show_bug.cgi?id=2167
Bug ID: 2167
Summary: Connection remains when fork() fails.
Product: Portable OpenSSH
Version: 5.3p1
Hardware: Other
OS: Linux
Status: NEW
Severity: enhancement
Priority: P5
Component: sshd
Assignee: unassigned-bugs at
2017 Oct 13
2
[PATCH] virtio: avoid possible OOM lockup at virtballoon_oom_notify()
On Tue, Oct 10, 2017 at 07:47:37PM +0900, Tetsuo Handa wrote:
> In leak_balloon(), mutex_lock(&vb->balloon_lock) is called in order to
> serialize against fill_balloon(). But in fill_balloon(),
> alloc_page(GFP_HIGHUSER[_MOVABLE] | __GFP_NOMEMALLOC | __GFP_NORETRY) is
> called with vb->balloon_lock mutex held. Since GFP_HIGH...
2017 Oct 13
2
[PATCH] virtio: avoid possible OOM lockup at virtballoon_oom_notify()
On Tue, Oct 10, 2017 at 07:47:37PM +0900, Tetsuo Handa wrote:
> In leak_balloon(), mutex_lock(&vb->balloon_lock) is called in order to
> serialize against fill_balloon(). But in fill_balloon(),
> alloc_page(GFP_HIGHUSER[_MOVABLE] | __GFP_NOMEMALLOC | __GFP_NORETRY) is
> called with vb->balloon_lock mutex held. Since GFP_HIGH...
2017 Oct 02
2
[RFC] [PATCH] mm,oom: Offload OOM notify callback to a kernel thread.
On Mon, Oct 02, 2017 at 01:50:35PM +0200, Michal Hocko wrote:
> On Mon 02-10-17 20:33:52, Tetsuo Handa wrote:
> > Michal Hocko wrote:
> > > [Hmm, I do not see the original patch which this has been a reply to]
> >
> > urbl.hostedemail.com and b.barracudacentral.org blocked my IP address,
> > and the rest are "Recipient address rejected: Greylisted" o...
2017 Oct 02
2
[RFC] [PATCH] mm,oom: Offload OOM notify callback to a kernel thread.
On Mon, Oct 02, 2017 at 01:50:35PM +0200, Michal Hocko wrote:
> On Mon 02-10-17 20:33:52, Tetsuo Handa wrote:
> > Michal Hocko wrote:
> > > [Hmm, I do not see the original patch which this has been a reply to]
> >
> > urbl.hostedemail.com and b.barracudacentral.org blocked my IP address,
> > and the rest are "Recipient address rejected: Greylisted" o...
2017 Oct 20
9
[PATCH v1 0/3] Virtio-balloon Improvement
This patch series intends to summarize the recent contributions made by
Michael S. Tsirkin, Tetsuo Handa, Michal Hocko etc. via reporting and
discussing the related deadlock issues on the mailinglist. Please check
each patch for details.
>From a high-level point of view, this patch series achieves:
1) eliminate the deadlock issue fundamentally caused by the inability
to run leak_balloon and...
2017 Oct 20
9
[PATCH v1 0/3] Virtio-balloon Improvement
This patch series intends to summarize the recent contributions made by
Michael S. Tsirkin, Tetsuo Handa, Michal Hocko etc. via reporting and
discussing the related deadlock issues on the mailinglist. Please check
each patch for details.
>From a high-level point of view, this patch series achieves:
1) eliminate the deadlock issue fundamentally caused by the inability
to run leak_balloon and...
2017 Oct 02
0
[RFC] [PATCH] mm,oom: Offload OOM notify callback to a kernel thread.
On Sun, Oct 01, 2017 at 02:44:34PM +0900, Tetsuo Handa wrote:
> Tetsuo Handa wrote:
> > Michael S. Tsirkin wrote:
> > > On Mon, Sep 11, 2017 at 07:27:19PM +0900, Tetsuo Handa wrote:
> > > > Hello.
> > > >
> > > > I noticed that virtio_balloon is using register_oom_notifier() and
> > >...
2017 Nov 04
1
[PATCH v17 4/6] virtio-balloon: VIRTIO_BALLOON_F_SG
Wei Wang wrote:
> On 11/03/2017 07:25 PM, Tetsuo Handa wrote:
> >> @@ -184,8 +307,12 @@ static unsigned fill_balloon(struct virtio_balloon *vb, size_t num)
> >>
> >> num_allocated_pages = vb->num_pfns;
> >> /* Did we get any? */
> >> - if (vb->num_pfns != 0)
> >> - tell_host(vb...
2017 Dec 07
0
[PATCH v18 05/10] xbitmap: add more operations
On 12/03/2017 09:50 AM, Tetsuo Handa wrote:
> Matthew Wilcox wrote:
>> On Fri, Dec 01, 2017 at 03:09:08PM +0000, Wang, Wei W wrote:
>>> On Friday, December 1, 2017 9:02 PM, Tetsuo Handa wrote:
>>>> If start == end is legal,
>>>>
>>>> for (; start < end; start = (start...
2017 Nov 04
1
[PATCH v17 4/6] virtio-balloon: VIRTIO_BALLOON_F_SG
Wei Wang wrote:
> On 11/03/2017 07:25 PM, Tetsuo Handa wrote:
> >> @@ -184,8 +307,12 @@ static unsigned fill_balloon(struct virtio_balloon *vb, size_t num)
> >>
> >> num_allocated_pages = vb->num_pfns;
> >> /* Did we get any? */
> >> - if (vb->num_pfns != 0)
> >> - tell_host(vb...
2017 Oct 13
0
[PATCH] virtio: avoid possible OOM lockup at virtballoon_oom_notify()
On Fri, Oct 13, 2017 at 08:28:37PM +0900, Tetsuo Handa wrote:
> Michael, will you pick up this patch?
> ----------
> >From 210dba24134e54cd470e79712c5cb8bb255566c0 Mon Sep 17 00:00:00 2001
> From: Tetsuo Handa <penguin-kernel at I-love.SAKURA.ne.jp>
> Date: Tue, 10 Oct 2017 19:28:20 +0900
> Subject: [PATCH] virtio: avoi...