diff options
| author | Stefan Hajnoczi <stefanha@redhat.com> | 2020-08-20 01:19:46 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-09-10 12:39:22 +0300 |
| commit | 22f3787e9d95e72d1f09795f294fb010e2998f43 (patch) | |
| tree | 3480623aa1da15cb0839b126d8fab736643b9d2b /include/uapi/linux/virtio_fs.h | |
| parent | f4fd4ae354ba23c948afb0ee3386182acb96d481 (diff) | |
| download | linux-22f3787e9d95e72d1f09795f294fb010e2998f43.tar.xz | |
virtiofs: set up virtio_fs dax_device
Setup a dax device.
Use the shm capability to find the cache entry and map it.
The DAX window is accessed by the fs/dax.c infrastructure and must have
struct pages (at least on x86). Use devm_memremap_pages() to map the
DAX window PCI BAR and allocate struct page.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'include/uapi/linux/virtio_fs.h')
| -rw-r--r-- | include/uapi/linux/virtio_fs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/virtio_fs.h b/include/uapi/linux/virtio_fs.h index 3056b6e9f8ce..bea38291421b 100644 --- a/include/uapi/linux/virtio_fs.h +++ b/include/uapi/linux/virtio_fs.h @@ -16,4 +16,7 @@ struct virtio_fs_config { __le32 num_request_queues; } __attribute__((packed)); +/* For the id field in virtio_pci_shm_cap */ +#define VIRTIO_FS_SHMCAP_ID_CACHE 0 + #endif /* _UAPI_LINUX_VIRTIO_FS_H */ |