On Thu 01-11-18 18:00:12, Miles Chen wrote:
[...]
> I did a test today, the only code changed is to clamp to read count to
> PAGE_SIZE and it worked well. Maybe we can solve this issue by just
> clamping the read count.
>
> count = count > PAGE_SIZE ? PAGE_SIZE : count;
This i what Matthew was
On Thu 01-11-18 18:00:12, Miles Chen wrote:
[...]
> I did a test today, the only code changed is to clamp to read count to
> PAGE_SIZE and it worked well. Maybe we can solve this issue by just
> clamping the read count.
>
> count = count > PAGE_SIZE ? PAGE_SIZE : count;
This i what Matthew was
On Wed, 2018-10-31 at 12:41 +0100, Michal Hocko wrote:
> On Wed 31-10-18 18:19:42, Miles Chen wrote:
> > On Wed, 2018-10-31 at 11:15 +0100, Michal Hocko wrote:
> > > On Wed 31-10-18 16:47:17, Miles Chen wrote:
> > > > On Tue, 2018-10-30 at 09:15 +0100, Michal Hocko wrote:
> > > > > On Tue 30-10-18
On Wed, 2018-10-31 at 12:41 +0100, Michal Hocko wrote:
> On Wed 31-10-18 18:19:42, Miles Chen wrote:
> > On Wed, 2018-10-31 at 11:15 +0100, Michal Hocko wrote:
> > > On Wed 31-10-18 16:47:17, Miles Chen wrote:
> > > > On Tue, 2018-10-30 at 09:15 +0100, Michal Hocko wrote:
> > > > > On Tue 30-10-18
On Wed 31-10-18 18:19:42, Miles Chen wrote:
> On Wed, 2018-10-31 at 11:15 +0100, Michal Hocko wrote:
> > On Wed 31-10-18 16:47:17, Miles Chen wrote:
> > > On Tue, 2018-10-30 at 09:15 +0100, Michal Hocko wrote:
> > > > On Tue 30-10-18 14:55:51, Miles Chen wrote:
> > > > [...]
> > > > > It's a real
On Wed 31-10-18 18:19:42, Miles Chen wrote:
> On Wed, 2018-10-31 at 11:15 +0100, Michal Hocko wrote:
> > On Wed 31-10-18 16:47:17, Miles Chen wrote:
> > > On Tue, 2018-10-30 at 09:15 +0100, Michal Hocko wrote:
> > > > On Tue 30-10-18 14:55:51, Miles Chen wrote:
> > > > [...]
> > > > > It's a real
On Wed, 2018-10-31 at 11:15 +0100, Michal Hocko wrote:
> On Wed 31-10-18 16:47:17, Miles Chen wrote:
> > On Tue, 2018-10-30 at 09:15 +0100, Michal Hocko wrote:
> > > On Tue 30-10-18 14:55:51, Miles Chen wrote:
> > > [...]
> > > > It's a real problem when using page_owner.
> > > > I found this
On Wed, 2018-10-31 at 11:15 +0100, Michal Hocko wrote:
> On Wed 31-10-18 16:47:17, Miles Chen wrote:
> > On Tue, 2018-10-30 at 09:15 +0100, Michal Hocko wrote:
> > > On Tue 30-10-18 14:55:51, Miles Chen wrote:
> > > [...]
> > > > It's a real problem when using page_owner.
> > > > I found this
On Wed 31-10-18 16:47:17, Miles Chen wrote:
> On Tue, 2018-10-30 at 09:15 +0100, Michal Hocko wrote:
> > On Tue 30-10-18 14:55:51, Miles Chen wrote:
> > [...]
> > > It's a real problem when using page_owner.
> > > I found this issue recently: I'm not able to read page_owner information
> > >
On Wed 31-10-18 16:47:17, Miles Chen wrote:
> On Tue, 2018-10-30 at 09:15 +0100, Michal Hocko wrote:
> > On Tue 30-10-18 14:55:51, Miles Chen wrote:
> > [...]
> > > It's a real problem when using page_owner.
> > > I found this issue recently: I'm not able to read page_owner information
> > >
On Tue, 2018-10-30 at 09:15 +0100, Michal Hocko wrote:
> On Tue 30-10-18 14:55:51, Miles Chen wrote:
> [...]
> > It's a real problem when using page_owner.
> > I found this issue recently: I'm not able to read page_owner information
> > during a overnight test. (error: read failed: Out of memory).
On Tue, 2018-10-30 at 09:15 +0100, Michal Hocko wrote:
> On Tue 30-10-18 14:55:51, Miles Chen wrote:
> [...]
> > It's a real problem when using page_owner.
> > I found this issue recently: I'm not able to read page_owner information
> > during a overnight test. (error: read failed: Out of memory).
On Tue 30-10-18 14:55:51, Miles Chen wrote:
[...]
> It's a real problem when using page_owner.
> I found this issue recently: I'm not able to read page_owner information
> during a overnight test. (error: read failed: Out of memory). I replace
> kmalloc() with vmalloc() and it worked well.
Is
On Tue 30-10-18 14:55:51, Miles Chen wrote:
[...]
> It's a real problem when using page_owner.
> I found this issue recently: I'm not able to read page_owner information
> during a overnight test. (error: read failed: Out of memory). I replace
> kmalloc() with vmalloc() and it worked well.
Is
On Tue, 2018-10-30 at 07:06 +0100, Michal Hocko wrote:
> On Tue 30-10-18 09:29:10, Miles Chen wrote:
> > On Mon, 2018-10-29 at 09:17 +0100, Michal Hocko wrote:
> > > On Mon 29-10-18 09:07:08, Michal Hocko wrote:
> > > [...]
> > > > Besides that, the following doesn't make much sense to me. It
On Tue, 2018-10-30 at 07:06 +0100, Michal Hocko wrote:
> On Tue 30-10-18 09:29:10, Miles Chen wrote:
> > On Mon, 2018-10-29 at 09:17 +0100, Michal Hocko wrote:
> > > On Mon 29-10-18 09:07:08, Michal Hocko wrote:
> > > [...]
> > > > Besides that, the following doesn't make much sense to me. It
On Tue 30-10-18 09:29:10, Miles Chen wrote:
> On Mon, 2018-10-29 at 09:17 +0100, Michal Hocko wrote:
> > On Mon 29-10-18 09:07:08, Michal Hocko wrote:
> > [...]
> > > Besides that, the following doesn't make much sense to me. It simply
> > > makes no sense to use vmalloc for sub page allocation
On Tue 30-10-18 09:29:10, Miles Chen wrote:
> On Mon, 2018-10-29 at 09:17 +0100, Michal Hocko wrote:
> > On Mon 29-10-18 09:07:08, Michal Hocko wrote:
> > [...]
> > > Besides that, the following doesn't make much sense to me. It simply
> > > makes no sense to use vmalloc for sub page allocation
On Mon, 2018-10-29 at 09:17 +0100, Michal Hocko wrote:
> On Mon 29-10-18 09:07:08, Michal Hocko wrote:
> [...]
> > Besides that, the following doesn't make much sense to me. It simply
> > makes no sense to use vmalloc for sub page allocation regardless of
> > HIGHMEM.
>
> OK, it is still early
On Mon, 2018-10-29 at 09:17 +0100, Michal Hocko wrote:
> On Mon 29-10-18 09:07:08, Michal Hocko wrote:
> [...]
> > Besides that, the following doesn't make much sense to me. It simply
> > makes no sense to use vmalloc for sub page allocation regardless of
> > HIGHMEM.
>
> OK, it is still early
On Mon 29-10-18 09:07:08, Michal Hocko wrote:
[...]
> Besides that, the following doesn't make much sense to me. It simply
> makes no sense to use vmalloc for sub page allocation regardless of
> HIGHMEM.
OK, it is still early morning here. Now I get the point of the patch.
You just want to
On Mon 29-10-18 09:07:08, Michal Hocko wrote:
[...]
> Besides that, the following doesn't make much sense to me. It simply
> makes no sense to use vmalloc for sub page allocation regardless of
> HIGHMEM.
OK, it is still early morning here. Now I get the point of the patch.
You just want to
On Mon 29-10-18 13:16:16, miles.c...@mediatek.com wrote:
> From: Miles Chen
>
> The kbuf used by page owner is allocated by kmalloc(), which means it
> can use only normal memory and there might be a "out of memory"
> issue when we're out of normal memory.
>
> To solve this problem, use
On Mon 29-10-18 13:16:16, miles.c...@mediatek.com wrote:
> From: Miles Chen
>
> The kbuf used by page owner is allocated by kmalloc(), which means it
> can use only normal memory and there might be a "out of memory"
> issue when we're out of normal memory.
>
> To solve this problem, use
From: Miles Chen
The kbuf used by page owner is allocated by kmalloc(), which means it
can use only normal memory and there might be a "out of memory"
issue when we're out of normal memory.
To solve this problem, use kvmalloc() to allocate kbuf
from normal/highmem. But there is one problem
From: Miles Chen
The kbuf used by page owner is allocated by kmalloc(), which means it
can use only normal memory and there might be a "out of memory"
issue when we're out of normal memory.
To solve this problem, use kvmalloc() to allocate kbuf
from normal/highmem. But there is one problem
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