ZONE_DEVICE struct pages have an extra reference count that complicates the
code for put_page() and several places in the kernel that need to check the
reference count to see that a page is not being used (gup, compaction,
migration, etc.). Clean up the code so the reference count doesn't need to
There are several places where ZONE_DEVICE struct pages assume a reference
count == 1 means the page is idle and free. Instead of open coding this,
add a helper function to hide this detail.
Signed-off-by: Ralph Campbell
---
fs/dax.c| 4 ++--
fs/ext4/inode.c | 5 +
This is still an RFC because after looking at the pmem/dax code some
more, I realized that the ZONE_DEVICE struct pages are being inserted
into the process' page tables with vmf_insert_mixed() and a zero
refcount on the ZONE_DEVICE struct page. This is sort of OK because
insert_pfn() increments
On Thu, Oct 1, 2020 at 7:53 PM Sam Ravnborg wrote:
>
> Hi Karol.
>
> On Thu, Oct 01, 2020 at 01:36:52PM +0200, Karol Herbst wrote:
> > On Fri, Sep 25, 2020 at 11:27 PM Karol Herbst wrote:
> > >
> > > Hi everybody,
> > >
> > > I think it's time to finally move our wiki from the old infrastructure
Hi Karol.
On Thu, Oct 01, 2020 at 01:36:52PM +0200, Karol Herbst wrote:
> On Fri, Sep 25, 2020 at 11:27 PM Karol Herbst wrote:
> >
> > Hi everybody,
> >
> > I think it's time to finally move our wiki from the old infrastructure
> > over to gitlab pages.
> >
> > This comes with several benefits:
On Fri, Sep 25, 2020 at 11:27 PM Karol Herbst wrote:
>
> Hi everybody,
>
> I think it's time to finally move our wiki from the old infrastructure
> over to gitlab pages.
>
> This comes with several benefits:
> * full control through git over the ikiwiki pipeline (setup files,
> plugins, system
On Wed, Sep 30, 2020 at 01:31:47PM -0400, Lyude wrote:
> From: Lyude Paul
>
> Like igt_assert_fd(), but using igt_require() instead
>
> Changes since v1:
> * Fix documentation error in igt_require_fd() - Petri Latvala
>
> Signed-off-by: Lyude Paul
Reviewed-by: Petri Latvala
> ---
>
On Wed, Sep 30, 2020 at 01:31:46PM -0400, Lyude wrote:
> From: Lyude Paul
>
> As Petri Latvala pointed out, some of the documentation in this macro is
> mistakenly copied from the other igt_assert*() macros. Let's fix that.
>
> Signed-off-by: Lyude Paul
Reviewed-by: Petri Latvala
> ---
>
