On 03/14/2014 11:14 PM, Benjamin LaHaise wrote:
..
What about the following patch? It adds additional reference to protect the page
avoid being freed when we reading it.
ps.It is applied on linux-next(3-13).
I think that's even worse than the spinlock approach since we'll end up
bouncing ar
Hi Ben,
Sorry for late.
On 03/14/2014 11:14 PM, Benjamin LaHaise wrote:
> Hi Gu,
>
> On Fri, Mar 14, 2014 at 06:25:16PM +0800, Gu Zheng wrote:
>> Hi Ben,
>> On 03/13/2014 06:17 AM, Benjamin LaHaise wrote:
>>
>>> Hello Tang,
>>>
>>> On Wed, Mar 12, 2014 at 01:25:26PM +0800, Tang Chen wrote:
>>> ..
Hi Gu,
On Fri, Mar 14, 2014 at 06:25:16PM +0800, Gu Zheng wrote:
> Hi Ben,
> On 03/13/2014 06:17 AM, Benjamin LaHaise wrote:
>
> > Hello Tang,
> >
> > On Wed, Mar 12, 2014 at 01:25:26PM +0800, Tang Chen wrote:
> > ... ...
> >
> >>> Another spot is in
> >>> aio_read_events_ring() where head and
Hi Ben,
On 03/13/2014 06:17 AM, Benjamin LaHaise wrote:
> Hello Tang,
>
> On Wed, Mar 12, 2014 at 01:25:26PM +0800, Tang Chen wrote:
> ... ...
>
>>> Another spot is in
>>> aio_read_events_ring() where head and tail are fetched from the ring
>>> without
>>> any locking. I also fear we'll be in
Hello Tang,
On Wed, Mar 12, 2014 at 01:25:26PM +0800, Tang Chen wrote:
... ...
> >Another spot is in
> >aio_read_events_ring() where head and tail are fetched from the ring
> >without
> >any locking. I also fear we'll be introducing new performance issues with
> >all the additonal spinlock bou
Hi Ben,
Sorry for the delay.
On 03/12/2014 02:46 AM, Benjamin LaHaise wrote:
On Mon, Mar 10, 2014 at 04:15:33PM +0800, Tang Chen wrote:
IO ring page migration has been implemented by the following patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/aio.
On Mon, Mar 10, 2014 at 04:15:33PM +0800, Tang Chen wrote:
> IO ring page migration has been implemented by the following patch:
>
>
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/aio.c?id=36bc08cc01709b4a9bb563b35aa530241ddc63e3
>
> In this patch, ctx->compl
IO ring page migration has been implemented by the following patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/aio.c?id=36bc08cc01709b4a9bb563b35aa530241ddc63e3
In this patch, ctx->completion_lock is used to prevent other processes
from accessing the ring p
AIO ring page migration has been implemented by the following patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/aio.c?id=36bc08cc01709b4a9bb563b35aa530241ddc63e3
In this patch, ctx->completion_lock is used to prevent other processes
from accessing the ring page be
9 matches
Mail list logo
