Am Donnerstag, 15. November 2018, 16:45:30 CET schrieb Souptick Joarder:
> Previouly drivers have their own way of mapping range of
> kernel pages/memory into user vma and this was done by
> invoking vm_insert_page() within a loop.
>
> As this pattern is common across different drivers, it can
>
On Wed, Nov 21, 2018 at 04:19:11AM -0700, William Kucharski wrote:
> Could you add a line to the description explicitly stating that a failure
> to insert any page in the range will fail the entire routine, something
> like:
>
> > * This allows drivers to insert range of kernel pages they've
> On Nov 21, 2018, at 5:35 AM, Matthew Wilcox wrote:
>
> It's probably better to be more explicit and answer Randy's question:
>
> * If we fail to insert any page into the vma, the function will return
> * immediately leaving any previously-inserted pages present. Callers
> * from the mmap
Could you add a line to the description explicitly stating that a failure
to insert any page in the range will fail the entire routine, something
like:
> * This allows drivers to insert range of kernel pages they've allocated
> * into a user vma. This is a generic function which drivers can use
>
On Mon, Nov 19, 2018 at 11:15:15PM +0530, Souptick Joarder wrote:
> On Mon, Nov 19, 2018 at 9:56 PM Mike Rapoport wrote:
> >
> > On Mon, Nov 19, 2018 at 08:43:09PM +0530, Souptick Joarder wrote:
> > > Hi Mike,
> > >
> > > On Sat, Nov 17, 2018 at 8:07 PM Matthew Wilcox
> > > wrote:
> > > >
> > >
On Mon, Nov 19, 2018 at 9:56 PM Mike Rapoport wrote:
>
> On Mon, Nov 19, 2018 at 08:43:09PM +0530, Souptick Joarder wrote:
> > Hi Mike,
> >
> > On Sat, Nov 17, 2018 at 8:07 PM Matthew Wilcox wrote:
> > >
> > > On Sat, Nov 17, 2018 at 12:26:38PM +0530, Souptick Joarder wrote:
> > > > On Fri, Nov
On Mon, Nov 19, 2018 at 08:43:09PM +0530, Souptick Joarder wrote:
> Hi Mike,
>
> On Sat, Nov 17, 2018 at 8:07 PM Matthew Wilcox wrote:
> >
> > On Sat, Nov 17, 2018 at 12:26:38PM +0530, Souptick Joarder wrote:
> > > On Fri, Nov 16, 2018 at 11:59 PM Mike Rapoport wrote:
> > > > > + *
Hi Mike,
On Sat, Nov 17, 2018 at 8:07 PM Matthew Wilcox wrote:
>
> On Sat, Nov 17, 2018 at 12:26:38PM +0530, Souptick Joarder wrote:
> > On Fri, Nov 16, 2018 at 11:59 PM Mike Rapoport wrote:
> > > > + * vm_insert_range - insert range of kernel pages into user vma
> > > > + * @vma: user vma to
On Sat, Nov 17, 2018 at 12:26:38PM +0530, Souptick Joarder wrote:
> On Fri, Nov 16, 2018 at 11:59 PM Mike Rapoport wrote:
> > > + * vm_insert_range - insert range of kernel pages into user vma
> > > + * @vma: user vma to map to
> > > + * @addr: target user address of this page
> > > + * @pages:
On 11/16/18 12:15 AM, Souptick Joarder wrote:
> On Fri, Nov 16, 2018 at 12:11 PM Matthew Wilcox wrote:
>>
>> On Fri, Nov 16, 2018 at 11:00:30AM +0530, Souptick Joarder wrote:
>>> On Thu, Nov 15, 2018 at 11:44 PM Randy Dunlap wrote:
On 11/15/18 7:45 AM, Souptick Joarder wrote:
What is
On Thu, Nov 15, 2018 at 09:15:30PM +0530, Souptick Joarder wrote:
> Previouly drivers have their own way of mapping range of
> kernel pages/memory into user vma and this was done by
> invoking vm_insert_page() within a loop.
>
> As this pattern is common across different drivers, it can
> be
On Fri, Nov 16, 2018 at 11:59 PM Mike Rapoport wrote:
>
> On Thu, Nov 15, 2018 at 09:15:30PM +0530, Souptick Joarder wrote:
> > Previouly drivers have their own way of mapping range of
> > kernel pages/memory into user vma and this was done by
> > invoking vm_insert_page() within a loop.
> >
> >
On Fri, Nov 16, 2018 at 12:11 PM Matthew Wilcox wrote:
>
> On Fri, Nov 16, 2018 at 11:00:30AM +0530, Souptick Joarder wrote:
> > On Thu, Nov 15, 2018 at 11:44 PM Randy Dunlap wrote:
> > > On 11/15/18 7:45 AM, Souptick Joarder wrote:
> > > What is the opposite of vm_insert_range() or even of
On Thu, Nov 15, 2018 at 5:42 PM Souptick Joarder wrote:
>
> Previouly drivers have their own way of mapping range of
> kernel pages/memory into user vma and this was done by
> invoking vm_insert_page() within a loop.
>
> As this pattern is common across different drivers, it can
> be generalized
On Thu, Nov 15, 2018 at 11:44 PM Randy Dunlap wrote:
>
> On 11/15/18 7:45 AM, Souptick Joarder wrote:
> > Previouly drivers have their own way of mapping range of
> > kernel pages/memory into user vma and this was done by
> > invoking vm_insert_page() within a loop.
> >
> > As this pattern is
On Fri, Nov 16, 2018 at 11:00:30AM +0530, Souptick Joarder wrote:
> On Thu, Nov 15, 2018 at 11:44 PM Randy Dunlap wrote:
> > On 11/15/18 7:45 AM, Souptick Joarder wrote:
> > What is the opposite of vm_insert_range() or even of vm_insert_page()?
> > or is there no need for that?
>
> There is no
Previouly drivers have their own way of mapping range of
kernel pages/memory into user vma and this was done by
invoking vm_insert_page() within a loop.
As this pattern is common across different drivers, it can
be generalized by creating a new function and use it across
the drivers.
On 11/15/18 7:45 AM, Souptick Joarder wrote:
> Previouly drivers have their own way of mapping range of
> kernel pages/memory into user vma and this was done by
> invoking vm_insert_page() within a loop.
>
> As this pattern is common across different drivers, it can
> be generalized by creating a
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