| Message ID | 20240605192934.742369-4-martin.oliveira@eideticom.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Enable P2PDMA in Userspace RDMA | expand |
On Wed, Jun 05, 2024 at 01:29:31PM -0600, Martin Oliveira wrote: > The P2PDMA code does not need (or want) a page_mkwrite() operator on its > VMA. > > Furthermore, having the page_mkwrite() operator causes > writable_file_mapping_allowed() to fail due to > vma_needs_dirty_tracking() on the gup flow, which is a pre-requisite for > enabling P2PDMA with FOLL_LONGTERM use cases. > > Co-developed-by: Logan Gunthorpe <logang@deltatee.com> > Signed-off-by: Logan Gunthorpe <logang@deltatee.com> > Signed-off-by: Martin Oliveira <martin.oliveira@eideticom.com> Fine with me, but please s/create/Create/ in the subject to match history of the file. Acked-by: Bjorn Helgaas <bhelgaas@google.com> > --- > drivers/pci/p2pdma.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c > index 4f47a13cb500..ac07053abfea 100644 > --- a/drivers/pci/p2pdma.c > +++ b/drivers/pci/p2pdma.c > @@ -171,6 +171,7 @@ static struct bin_attribute p2pmem_alloc_attr = { > * to be very large. > */ > .size = SZ_1T, > + .mmap_allocates = true, > }; > > static struct attribute *p2pmem_attrs[] = { > -- > 2.34.1 >
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index 4f47a13cb500..ac07053abfea 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -171,6 +171,7 @@ static struct bin_attribute p2pmem_alloc_attr = { * to be very large. */ .size = SZ_1T, + .mmap_allocates = true, }; static struct attribute *p2pmem_attrs[] = {