On Mon, Feb 11, 2019 at 04:25:10PM -0700, Jason Gunthorpe wrote:
> On Mon, Feb 11, 2019 at 02:55:10PM -0800, Dan Williams wrote:
>
> > > I also wonder if someone should think about making fast into a flag
> > > too..
> > >
> > > But I'm not sure when fast should be used vs when it shouldn't :(
> >
On Mon, Feb 11, 2019 at 02:55:10PM -0800, Dan Williams wrote:
> > I also wonder if someone should think about making fast into a flag
> > too..
> >
> > But I'm not sure when fast should be used vs when it shouldn't :(
>
> Effectively fast should always be used just in case the user cares
> about
>
> On Mon, Feb 11, 2019 at 2:07 PM Jason Gunthorpe wrote:
> >
> > On Mon, Feb 11, 2019 at 01:52:38PM -0800, Ira Weiny wrote:
> > > On Mon, Feb 11, 2019 at 01:39:12PM -0800, John Hubbard wrote:
> > > > On 2/11/19 1:26 PM, Ira Weiny wrote:
> > > > > On Mon, Feb 11, 2019 at 01:13:56PM -0800, John H
On Mon, Feb 11, 2019 at 2:07 PM Jason Gunthorpe wrote:
>
> On Mon, Feb 11, 2019 at 01:52:38PM -0800, Ira Weiny wrote:
> > On Mon, Feb 11, 2019 at 01:39:12PM -0800, John Hubbard wrote:
> > > On 2/11/19 1:26 PM, Ira Weiny wrote:
> > > > On Mon, Feb 11, 2019 at 01:13:56PM -0800, John Hubbard wrote:
>
On Mon, Feb 11, 2019 at 01:52:38PM -0800, Ira Weiny wrote:
> On Mon, Feb 11, 2019 at 01:39:12PM -0800, John Hubbard wrote:
> > On 2/11/19 1:26 PM, Ira Weiny wrote:
> > > On Mon, Feb 11, 2019 at 01:13:56PM -0800, John Hubbard wrote:
> > >> On 2/11/19 12:39 PM, Jason Gunthorpe wrote:
> > >>> On Mon,
On 2/11/19 1:52 PM, Ira Weiny wrote:
> On Mon, Feb 11, 2019 at 01:39:12PM -0800, John Hubbard wrote:
>> On 2/11/19 1:26 PM, Ira Weiny wrote:
>>> On Mon, Feb 11, 2019 at 01:13:56PM -0800, John Hubbard wrote:
On 2/11/19 12:39 PM, Jason Gunthorpe wrote:
> On Mon, Feb 11, 2019 at 12:16:42PM -0
On Mon, Feb 11, 2019 at 01:39:12PM -0800, John Hubbard wrote:
> On 2/11/19 1:26 PM, Ira Weiny wrote:
> > On Mon, Feb 11, 2019 at 01:13:56PM -0800, John Hubbard wrote:
> >> On 2/11/19 12:39 PM, Jason Gunthorpe wrote:
> >>> On Mon, Feb 11, 2019 at 12:16:42PM -0800, ira.we...@intel.com wrote:
> F
On Mon, Feb 11, 2019 at 1:39 PM John Hubbard wrote:
>
> On 2/11/19 1:26 PM, Ira Weiny wrote:
> > On Mon, Feb 11, 2019 at 01:13:56PM -0800, John Hubbard wrote:
> >> On 2/11/19 12:39 PM, Jason Gunthorpe wrote:
> >>> On Mon, Feb 11, 2019 at 12:16:42PM -0800, ira.we...@intel.com wrote:
> From: Ir
On 2/11/19 1:26 PM, Ira Weiny wrote:
> On Mon, Feb 11, 2019 at 01:13:56PM -0800, John Hubbard wrote:
>> On 2/11/19 12:39 PM, Jason Gunthorpe wrote:
>>> On Mon, Feb 11, 2019 at 12:16:42PM -0800, ira.we...@intel.com wrote:
From: Ira Weiny
>> [...]
>> It seems to me that the longterm vs. short-t
On Mon, Feb 11, 2019 at 01:13:56PM -0800, John Hubbard wrote:
> On 2/11/19 12:39 PM, Jason Gunthorpe wrote:
> > On Mon, Feb 11, 2019 at 12:16:42PM -0800, ira.we...@intel.com wrote:
> >> From: Ira Weiny
> [...]
> >> +static inline int get_user_pages_fast_longterm(unsigned long start, int
> >> nr_p
On 2/11/19 12:39 PM, Jason Gunthorpe wrote:
> On Mon, Feb 11, 2019 at 12:16:42PM -0800, ira.we...@intel.com wrote:
>> From: Ira Weiny
[...]
>> +static inline int get_user_pages_fast_longterm(unsigned long start, int
>> nr_pages,
>> + bool write, struct pa
On Mon, Feb 11, 2019 at 12:16:42PM -0800, ira.we...@intel.com wrote:
> From: Ira Weiny
>
> Users of get_user_pages_fast are not protected against mapping
> pages within FS DAX. Introduce a call which protects them.
>
> We do this by checking for DEVMAP pages during the fast walk and
> falling b
From: Ira Weiny
Users of get_user_pages_fast are not protected against mapping
pages within FS DAX. Introduce a call which protects them.
We do this by checking for DEVMAP pages during the fast walk and
falling back to the longterm gup call to check for FS DAX if needed.
Signed-off-by: Ira Wei
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