On Fri, May 24, 2019 at 09:07:11AM -0700, Larry Bassel wrote:
> Again, I don't think this can happen in DAX. The only sharing allowed
> is for FS/DAX/2MiB pagesize.
Hm. I still don't follow. How do you guarantee that DAX actually allocated
continues space for the file on backing storage and you
On Fri, May 24, 2019 at 9:07 AM Larry Bassel wrote:
> On 14 May 19 16:01, Kirill A. Shutemov wrote:
> > On Thu, May 09, 2019 at 09:05:33AM -0700, Larry Bassel wrote:
[..]
> > > diff --git a/mm/memory.c b/mm/memory.c
> > > index f7d962d..4c1814c 100644
> > > --- a/mm/memory.c
> > > +++
On 14 May 19 16:01, Kirill A. Shutemov wrote:
> On Thu, May 09, 2019 at 09:05:33AM -0700, Larry Bassel wrote:
[trim]
> > --- a/mm/huge_memory.c
> > +++ b/mm/huge_memory.c
> > @@ -1747,6 +1747,33 @@ static inline void zap_deposited_table(struct
> > mm_struct *mm, pmd_t *pmd)
> >
On Thu, May 09, 2019 at 09:05:33AM -0700, Larry Bassel wrote:
> This is based on (but somewhat different from) what hugetlbfs
> does to share/unshare page tables.
>
> Signed-off-by: Larry Bassel
> ---
> include/linux/hugetlb.h | 4 ++
> mm/huge_memory.c| 32 ++
>
On 5/10/19 9:16 AM, Larry Bassel wrote:
> On 09 May 19 09:49, Matthew Wilcox wrote:
>> On Thu, May 09, 2019 at 09:05:33AM -0700, Larry Bassel wrote:
>>> This is based on (but somewhat different from) what hugetlbfs
>>> does to share/unshare page tables.
>>
>> Wow, that worked out far more cleanly
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