On Tue, Mar 15, 2022 at 4:50 AM Dan Williams wrote:
>
> On Fri, Mar 11, 2022 at 1:06 AM Muchun Song wrote:
> >
> > On Thu, Mar 10, 2022 at 8:59 AM Dan Williams
> > wrote:
> > >
> > > On Wed, Mar 2, 2022 at 12:30 AM Muchun Song
> > > wrote:
> > > >
> > > > Currently
On Fri, Mar 11, 2022 at 1:06 AM Muchun Song wrote:
>
> On Thu, Mar 10, 2022 at 8:59 AM Dan Williams wrote:
> >
> > On Wed, Mar 2, 2022 at 12:30 AM Muchun Song
> > wrote:
> > >
> > > Currently dax_mapping_entry_mkclean() fails to clean and write protect
> > > the pte entry within a DAX PMD
On Thu, Mar 10, 2022 at 8:59 AM Dan Williams wrote:
>
> On Wed, Mar 2, 2022 at 12:30 AM Muchun Song wrote:
> >
> > Currently dax_mapping_entry_mkclean() fails to clean and write protect
> > the pte entry within a DAX PMD entry during an *sync operation. This
> > can result in data loss in the
On Wed, Mar 2, 2022 at 12:30 AM Muchun Song wrote:
>
> Currently dax_mapping_entry_mkclean() fails to clean and write protect
> the pte entry within a DAX PMD entry during an *sync operation. This
> can result in data loss in the following sequence:
>
> 1) process A mmap write to DAX PMD,
Currently dax_mapping_entry_mkclean() fails to clean and write protect
the pte entry within a DAX PMD entry during an *sync operation. This
can result in data loss in the following sequence:
1) process A mmap write to DAX PMD, dirtying PMD radix tree entry and
making the pmd entry dirty
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