On Thu, May 29, 2025 at 04:32:06PM +1000, Alistair Popple wrote: > PFN_DEV was used by callers of dax_direct_access() to figure out if the > returned PFN is associated with a page using pfn_t_has_page() or > not. However all DAX PFNs now require an assoicated ZONE_DEVICE page so can > assume a page exists. > > Other users of PFN_DEV were setting it before calling > vmf_insert_mixed(). This is unnecessary as it is no longer checked, instead > relying on pfn_valid() to determine if there is an associated page or not. > > Signed-off-by: Alistair Popple <apopple@xxxxxxxxxx> > Reviewed-by: Christoph Hellwig <hch@xxxxxx> > --- > drivers/gpu/drm/gma500/fbdev.c | 2 +- > drivers/gpu/drm/omapdrm/omap_gem.c | 5 ++--- > drivers/s390/block/dcssblk.c | 3 +-- > drivers/vfio/pci/vfio_pci_core.c | 6 ++---- > fs/cramfs/inode.c | 2 +- > include/linux/pfn_t.h | 25 ++----------------------- > mm/memory.c | 4 ++-- > 7 files changed, 11 insertions(+), 36 deletions(-) Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Jason
