On Tue, Nov 12, 2019 at 08:26:55PM -0800, John Hubbard wrote:
> As it says in the updated comment in gup.c: current FOLL_LONGTERM
> behavior is incompatible with FAULT_FLAG_ALLOW_RETRY because of the
> FS DAX check requirement on vmas.
>
> However, the corresponding restriction in
On 11/13/19 11:17 AM, Ira Weiny wrote:
...
@@ -348,33 +347,13 @@ static int vaddr_get_pfn(struct mm_struct *mm, unsigned
long vaddr,
flags |= FOLL_WRITE;
down_read(>mmap_sem);
- if (mm == current->mm) {
- ret = get_user_pages(vaddr, 1, flags |
On Wed, Nov 13, 2019 at 09:02:02AM -0400, Jason Gunthorpe wrote:
> On Tue, Nov 12, 2019 at 08:26:55PM -0800, John Hubbard wrote:
> > As it says in the updated comment in gup.c: current FOLL_LONGTERM
> > behavior is incompatible with FAULT_FLAG_ALLOW_RETRY because of the
> > FS DAX check
On Tue, Nov 12, 2019 at 08:26:55PM -0800, John Hubbard wrote:
> As it says in the updated comment in gup.c: current FOLL_LONGTERM
> behavior is incompatible with FAULT_FLAG_ALLOW_RETRY because of the
> FS DAX check requirement on vmas.
>
> However, the corresponding restriction in
As it says in the updated comment in gup.c: current FOLL_LONGTERM
behavior is incompatible with FAULT_FLAG_ALLOW_RETRY because of the
FS DAX check requirement on vmas.
However, the corresponding restriction in get_user_pages_remote() was
slightly stricter than is actually required: it forbade all
