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
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 flag accessors to test, set and clear the new
page->dma_pinned_flags field.
The
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 flag accessors to test, set and clear the new
page->dma_pinned_flags field.
The
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