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ublk: add parameter struct io_uring_cmd * to ublk_prep_auto_buf_reg()

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Add parameter `struct io_uring_cmd *` to ublk_prep_auto_buf_reg() and
prepare for reusing this helper for the coming UBLK_BATCH_IO feature,
which can fetch & commit one batch of io commands via single uring_cmd.

Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei
2025-11-21 09:58:24 +08:00
committed by Jens Axboe
parent 9574b21e95
commit 3035b9b46b
1 changed files with 7 additions and 5 deletions
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12
drivers/block/ublk_drv.c
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@@ -1176,11 +1176,12 @@ ublk_auto_buf_reg_fallback(const struct ublk_queue *ubq, struct ublk_io *io)
}
static bool ublk_auto_buf_reg(const struct ublk_queue *ubq, struct request *req,
struct ublk_io *io, unsigned int issue_flags)
struct ublk_io *io, struct io_uring_cmd *cmd,
unsigned int issue_flags)
{
int ret;
ret = io_buffer_register_bvec(io->cmd, req, ublk_io_release,
ret = io_buffer_register_bvec(cmd, req, ublk_io_release,
io->buf.index, issue_flags);
if (ret) {
if (io->buf.flags & UBLK_AUTO_BUF_REG_FALLBACK) {
@@ -1192,18 +1193,19 @@ static bool ublk_auto_buf_reg(const struct ublk_queue *ubq, struct request *req,
}
io->task_registered_buffers = 1;
io->buf_ctx_handle = io_uring_cmd_ctx_handle(io->cmd);
io->buf_ctx_handle = io_uring_cmd_ctx_handle(cmd);
io->flags |= UBLK_IO_FLAG_AUTO_BUF_REG;
return true;
}
static bool ublk_prep_auto_buf_reg(struct ublk_queue *ubq,
struct request *req, struct ublk_io *io,
struct io_uring_cmd *cmd,
unsigned int issue_flags)
{
ublk_init_req_ref(ubq, io);
if (ublk_support_auto_buf_reg(ubq) && ublk_rq_has_data(req))
return ublk_auto_buf_reg(ubq, req, io, issue_flags);
return ublk_auto_buf_reg(ubq, req, io, cmd, issue_flags);
return true;
}
@@ -1278,7 +1280,7 @@ static void ublk_dispatch_req(struct ublk_queue *ubq,
if (!ublk_start_io(ubq, req, io))
return;
if (ublk_prep_auto_buf_reg(ubq, req, io, issue_flags))
if (ublk_prep_auto_buf_reg(ubq, req, io, io->cmd, issue_flags))
ublk_complete_io_cmd(io, req, UBLK_IO_RES_OK, issue_flags);
}