On 11/6/18 12:41 PM, Dave Chinner wrote:
> On Tue, Nov 06, 2018 at 12:00:06PM +0100, Jan Kara wrote:
>> On Tue 06-11-18 13:47:15, Dave Chinner wrote:
>>> On Mon, Nov 05, 2018 at 04:26:04PM -0800, John Hubbard wrote:
On 11/5/18 1:54 AM, Jan Kara wrote:
> Hmm, have you tried larger buffer
On 11/6/18 12:41 PM, Dave Chinner wrote:
> On Tue, Nov 06, 2018 at 12:00:06PM +0100, Jan Kara wrote:
>> On Tue 06-11-18 13:47:15, Dave Chinner wrote:
>>> On Mon, Nov 05, 2018 at 04:26:04PM -0800, John Hubbard wrote:
On 11/5/18 1:54 AM, Jan Kara wrote:
> Hmm, have you tried larger buffer
On Tue, Nov 06, 2018 at 12:00:06PM +0100, Jan Kara wrote:
> On Tue 06-11-18 13:47:15, Dave Chinner wrote:
> > On Mon, Nov 05, 2018 at 04:26:04PM -0800, John Hubbard wrote:
> > > On 11/5/18 1:54 AM, Jan Kara wrote:
> > > > Hmm, have you tried larger buffer sizes? Because synchronous 8k IO isn't
> >
On Tue, Nov 06, 2018 at 12:00:06PM +0100, Jan Kara wrote:
> On Tue 06-11-18 13:47:15, Dave Chinner wrote:
> > On Mon, Nov 05, 2018 at 04:26:04PM -0800, John Hubbard wrote:
> > > On 11/5/18 1:54 AM, Jan Kara wrote:
> > > > Hmm, have you tried larger buffer sizes? Because synchronous 8k IO isn't
> >
On Tue 06-11-18 13:47:15, Dave Chinner wrote:
> On Mon, Nov 05, 2018 at 04:26:04PM -0800, John Hubbard wrote:
> > On 11/5/18 1:54 AM, Jan Kara wrote:
> > > Hmm, have you tried larger buffer sizes? Because synchronous 8k IO isn't
> > > going to max-out NVME iops by far. Can I suggest you install
On Tue 06-11-18 13:47:15, Dave Chinner wrote:
> On Mon, Nov 05, 2018 at 04:26:04PM -0800, John Hubbard wrote:
> > On 11/5/18 1:54 AM, Jan Kara wrote:
> > > Hmm, have you tried larger buffer sizes? Because synchronous 8k IO isn't
> > > going to max-out NVME iops by far. Can I suggest you install
On Mon, Nov 05, 2018 at 04:26:04PM -0800, John Hubbard wrote:
> On 11/5/18 1:54 AM, Jan Kara wrote:
> > Hmm, have you tried larger buffer sizes? Because synchronous 8k IO isn't
> > going to max-out NVME iops by far. Can I suggest you install fio [1] (it
> > has the advantage that it is pretty much
On Mon, Nov 05, 2018 at 04:26:04PM -0800, John Hubbard wrote:
> On 11/5/18 1:54 AM, Jan Kara wrote:
> > Hmm, have you tried larger buffer sizes? Because synchronous 8k IO isn't
> > going to max-out NVME iops by far. Can I suggest you install fio [1] (it
> > has the advantage that it is pretty much
On 11/5/18 1:54 AM, Jan Kara wrote:
> On Sun 04-11-18 23:10:12, John Hubbard wrote:
>> On 10/13/18 9:47 AM, Christoph Hellwig wrote:
>>> On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
In patch 6/6, pin_page_for_dma(), which is called at the end of
get_user_pages(),
On 11/5/18 1:54 AM, Jan Kara wrote:
> On Sun 04-11-18 23:10:12, John Hubbard wrote:
>> On 10/13/18 9:47 AM, Christoph Hellwig wrote:
>>> On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
In patch 6/6, pin_page_for_dma(), which is called at the end of
get_user_pages(),
On Sun 04-11-18 23:10:12, John Hubbard wrote:
> On 10/13/18 9:47 AM, Christoph Hellwig wrote:
> > On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
> >> In patch 6/6, pin_page_for_dma(), which is called at the end of
> >> get_user_pages(),
> >> unceremoniously rips the pages out of
On Sun 04-11-18 23:10:12, John Hubbard wrote:
> On 10/13/18 9:47 AM, Christoph Hellwig wrote:
> > On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
> >> In patch 6/6, pin_page_for_dma(), which is called at the end of
> >> get_user_pages(),
> >> unceremoniously rips the pages out of
On 10/13/18 9:47 AM, Christoph Hellwig wrote:
> On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
>> In patch 6/6, pin_page_for_dma(), which is called at the end of
>> get_user_pages(),
>> unceremoniously rips the pages out of the LRU, as a prerequisite to using
>> either of the
On 10/13/18 9:47 AM, Christoph Hellwig wrote:
> On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
>> In patch 6/6, pin_page_for_dma(), which is called at the end of
>> get_user_pages(),
>> unceremoniously rips the pages out of the LRU, as a prerequisite to using
>> either of the
On 10/24/18 4:00 AM, Balbir Singh wrote:
> On Fri, Oct 12, 2018 at 05:15:51PM -0700, John Hubbard wrote:
>> On 10/12/18 3:56 AM, Balbir Singh wrote:
>>> On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
From: John Hubbard
>> [...]
+ * Because page->dma_pinned_flags
On 10/24/18 4:00 AM, Balbir Singh wrote:
> On Fri, Oct 12, 2018 at 05:15:51PM -0700, John Hubbard wrote:
>> On 10/12/18 3:56 AM, Balbir Singh wrote:
>>> On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
From: John Hubbard
>> [...]
+ * Because page->dma_pinned_flags
On Fri, Oct 12, 2018 at 05:15:51PM -0700, John Hubbard wrote:
> On 10/12/18 3:56 AM, Balbir Singh wrote:
> > On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> >> From: John Hubbard
> [...]
> >> + * Because page->dma_pinned_flags is unioned with page->lru, any page that
>
On Fri, Oct 12, 2018 at 05:15:51PM -0700, John Hubbard wrote:
> On 10/12/18 3:56 AM, Balbir Singh wrote:
> > On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> >> From: John Hubbard
> [...]
> >> + * Because page->dma_pinned_flags is unioned with page->lru, any page that
>
On Wed 17-10-18 17:03:03, John Hubbard wrote:
> On 10/17/18 4:09 AM, Michal Hocko wrote:
> > On Tue 16-10-18 18:48:23, John Hubbard wrote:
> > [...]
> >> It's hard to say exactly what the active/inactive/unevictable list should
> >> be when DMA is done and put_user_page*() is called, because we
On Wed 17-10-18 17:03:03, John Hubbard wrote:
> On 10/17/18 4:09 AM, Michal Hocko wrote:
> > On Tue 16-10-18 18:48:23, John Hubbard wrote:
> > [...]
> >> It's hard to say exactly what the active/inactive/unevictable list should
> >> be when DMA is done and put_user_page*() is called, because we
On 10/17/18 4:09 AM, Michal Hocko wrote:
> On Tue 16-10-18 18:48:23, John Hubbard wrote:
> [...]
>> It's hard to say exactly what the active/inactive/unevictable list should
>> be when DMA is done and put_user_page*() is called, because we don't know
>> if some device read, wrote, or ignored any
On 10/17/18 4:09 AM, Michal Hocko wrote:
> On Tue 16-10-18 18:48:23, John Hubbard wrote:
> [...]
>> It's hard to say exactly what the active/inactive/unevictable list should
>> be when DMA is done and put_user_page*() is called, because we don't know
>> if some device read, wrote, or ignored any
On Tue 16-10-18 18:48:23, John Hubbard wrote:
[...]
> It's hard to say exactly what the active/inactive/unevictable list should
> be when DMA is done and put_user_page*() is called, because we don't know
> if some device read, wrote, or ignored any of those pages. Although if
>
On Tue 16-10-18 18:48:23, John Hubbard wrote:
[...]
> It's hard to say exactly what the active/inactive/unevictable list should
> be when DMA is done and put_user_page*() is called, because we don't know
> if some device read, wrote, or ignored any of those pages. Although if
>
On 10/16/18 1:51 AM, Jan Kara wrote:
> On Sun 14-10-18 10:01:24, Dave Chinner wrote:
>> On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
>>> On 10/12/18 8:55 PM, Dave Chinner wrote:
On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> From: John Hubbard
On 10/16/18 1:51 AM, Jan Kara wrote:
> On Sun 14-10-18 10:01:24, Dave Chinner wrote:
>> On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
>>> On 10/12/18 8:55 PM, Dave Chinner wrote:
On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> From: John Hubbard
On Sun 14-10-18 10:01:24, Dave Chinner wrote:
> On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
> > On 10/12/18 8:55 PM, Dave Chinner wrote:
> > > On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> > >> From: John Hubbard
> > [...]
> > >> diff --git
On Sun 14-10-18 10:01:24, Dave Chinner wrote:
> On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
> > On 10/12/18 8:55 PM, Dave Chinner wrote:
> > > On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> > >> From: John Hubbard
> > [...]
> > >> diff --git
On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
> On 10/12/18 8:55 PM, Dave Chinner wrote:
> > On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> >> From: John Hubbard
> [...]
> >> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
> >> index
On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
> On 10/12/18 8:55 PM, Dave Chinner wrote:
> > On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> >> From: John Hubbard
> [...]
> >> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
> >> index
On 10/13/18 9:47 AM, Christoph Hellwig wrote:
> On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
>> In patch 6/6, pin_page_for_dma(), which is called at the end of
>> get_user_pages(),
>> unceremoniously rips the pages out of the LRU, as a prerequisite to using
>> either of the
On 10/13/18 9:47 AM, Christoph Hellwig wrote:
> On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
>> In patch 6/6, pin_page_for_dma(), which is called at the end of
>> get_user_pages(),
>> unceremoniously rips the pages out of the LRU, as a prerequisite to using
>> either of the
On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
> In patch 6/6, pin_page_for_dma(), which is called at the end of
> get_user_pages(),
> unceremoniously rips the pages out of the LRU, as a prerequisite to using
> either of the page->dma_pinned_* fields.
>
> The idea is that LRU is
On Sat, Oct 13, 2018 at 12:34:12AM -0700, John Hubbard wrote:
> In patch 6/6, pin_page_for_dma(), which is called at the end of
> get_user_pages(),
> unceremoniously rips the pages out of the LRU, as a prerequisite to using
> either of the page->dma_pinned_* fields.
>
> The idea is that LRU is
On 10/12/18 8:55 PM, Dave Chinner wrote:
> On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
>> From: John Hubbard
[...]
>> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
>> index 5ed8f6292a53..017ab82e36ca 100644
>> --- a/include/linux/mm_types.h
>> +++
On 10/12/18 8:55 PM, Dave Chinner wrote:
> On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
>> From: John Hubbard
[...]
>> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
>> index 5ed8f6292a53..017ab82e36ca 100644
>> --- a/include/linux/mm_types.h
>> +++
On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> From: John Hubbard
>
> Add two struct page fields that, combined, are unioned with
> struct page->lru. There is no change in the size of
> struct page. These new fields are for type safety and clarity.
>
> Also add page
On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> From: John Hubbard
>
> Add two struct page fields that, combined, are unioned with
> struct page->lru. There is no change in the size of
> struct page. These new fields are for type safety and clarity.
>
> Also add page
On 10/12/18 3:56 AM, Balbir Singh wrote:
> On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
>> From: John Hubbard
[...]
>> + * Because page->dma_pinned_flags is unioned with page->lru, any page that
>> + * uses these flags must NOT be on an LRU. That's partly enforced by
>>
On 10/12/18 3:56 AM, Balbir Singh wrote:
> On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
>> From: John Hubbard
[...]
>> + * Because page->dma_pinned_flags is unioned with page->lru, any page that
>> + * uses these flags must NOT be on an LRU. That's partly enforced by
>>
On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> From: John Hubbard
>
> Add two struct page fields that, combined, are unioned with
> struct page->lru. There is no change in the size of
> struct page. These new fields are for type safety and clarity.
>
> Also add page
On Thu, Oct 11, 2018 at 11:00:12PM -0700, john.hubb...@gmail.com wrote:
> From: John Hubbard
>
> Add two struct page fields that, combined, are unioned with
> struct page->lru. There is no change in the size of
> struct page. These new fields are for type safety and clarity.
>
> Also add page
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