On Mon, Oct 26, 2020 at 11:15 PM Tomasz Figa wrote:
>
> Hi Daniel,
>
> On Mon, Oct 26, 2020 at 11:58:08AM +0100, Daniel Vetter wrote:
> > This is used by media/videbuf2 for persistent dma mappings, not just
> > for a single dma operation and then freed again, so needs
> > FOLL_LONGTERM.
> >
> >
Hi Daniel,
On Mon, Oct 26, 2020 at 11:58:08AM +0100, Daniel Vetter wrote:
> This is used by media/videbuf2 for persistent dma mappings, not just
> for a single dma operation and then freed again, so needs
> FOLL_LONGTERM.
>
> Unfortunately current pup_locked doesn't support FOLL_LONGTERM due to
This is used by media/videbuf2 for persistent dma mappings, not just
for a single dma operation and then freed again, so needs
FOLL_LONGTERM.
Unfortunately current pup_locked doesn't support FOLL_LONGTERM due to
locking issues. Rework the code to pull the pup path out from the
mmap_sem critical
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