Add two helpers for checking if map/unmap is needed, since we may have
passthrough request which needs map or unmap in future, such as for
supporting report zones.
Meantime don't mark ublk_copy_user_pages as inline since this function
is a bit fat now.
Reviewed-by: Ziyang Zhang <ZiyangZhang@linux.alibaba.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
-static inline int ublk_copy_user_pages(struct ublk_map_data *data,
- bool to_vm)
+static int ublk_copy_user_pages(struct ublk_map_data *data, bool to_vm)
{
const unsigned int gup_flags = to_vm ? FOLL_WRITE : 0;
const unsigned long start_vm = data->io->addr;
{
const unsigned int gup_flags = to_vm ? FOLL_WRITE : 0;
const unsigned long start_vm = data->io->addr;
+static inline bool ublk_need_map_req(const struct request *req)
+{
+ return ublk_rq_has_data(req) && req_op(req) == REQ_OP_WRITE;
+}
+
+static inline bool ublk_need_unmap_req(const struct request *req)
+{
+ return ublk_rq_has_data(req) && req_op(req) == REQ_OP_READ;
+}
+
static int ublk_map_io(const struct ublk_queue *ubq, const struct request *req,
struct ublk_io *io)
{
static int ublk_map_io(const struct ublk_queue *ubq, const struct request *req,
struct ublk_io *io)
{
* context and the big benefit is that pinning pages in current
* context is pretty fast, see ublk_pin_user_pages
*/
* context and the big benefit is that pinning pages in current
* context is pretty fast, see ublk_pin_user_pages
*/
- if (ublk_rq_has_data(req) && req_op(req) == REQ_OP_WRITE) {
+ if (ublk_need_map_req(req)) {
struct ublk_map_data data = {
.ubq = ubq,
.rq = req,
struct ublk_map_data data = {
.ubq = ubq,
.rq = req,
{
const unsigned int rq_bytes = blk_rq_bytes(req);
{
const unsigned int rq_bytes = blk_rq_bytes(req);
- if (req_op(req) == REQ_OP_READ && ublk_rq_has_data(req)) {
+ if (ublk_need_unmap_req(req)) {
struct ublk_map_data data = {
.ubq = ubq,
.rq = req,
struct ublk_map_data data = {
.ubq = ubq,
.rq = req,
- if (ublk_need_get_data(ubq) && (req_op(req) == REQ_OP_WRITE)) {
+ if (ublk_need_get_data(ubq) && ublk_need_map_req(req)) {
/*
* We have not handled UBLK_IO_NEED_GET_DATA command yet,
* so immepdately pass UBLK_IO_RES_NEED_GET_DATA to ublksrv
/*
* We have not handled UBLK_IO_NEED_GET_DATA command yet,
* so immepdately pass UBLK_IO_RES_NEED_GET_DATA to ublksrv