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io_uring: introduce type alias for io_tw_state

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In preparation for changing how io_tw_state is passed, introduce a type
alias io_tw_token_t for struct io_tw_state *. This allows for changing
the representation in one place, without having to update the many
functions that just forward their struct io_tw_state * argument.

Also add a comment to struct io_tw_state to explain its purpose.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Link: https://lore.kernel.org/r/20250217022511.1150145-1-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Caleb Sander Mateos
2025-02-16 19:25:04 -07:00
committed by Jens Axboe
parent 496f56bf9f
commit bcf8a0293a
13 changed files with 66 additions and 56 deletions
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8
io_uring/io_uring.h
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@@ -90,9 +90,9 @@ void io_req_task_work_add_remote(struct io_kiocb *req, struct io_ring_ctx *ctx,
unsigned flags);
bool io_alloc_async_data(struct io_kiocb *req);
void io_req_task_queue(struct io_kiocb *req);
void io_req_task_complete(struct io_kiocb *req, struct io_tw_state *ts);
void io_req_task_complete(struct io_kiocb *req, io_tw_token_t tw);
void io_req_task_queue_fail(struct io_kiocb *req, int ret);
void io_req_task_submit(struct io_kiocb *req, struct io_tw_state *ts);
void io_req_task_submit(struct io_kiocb *req, io_tw_token_t tw);
struct llist_node *io_handle_tw_list(struct llist_node *node, unsigned int *count, unsigned int max_entries);
struct llist_node *tctx_task_work_run(struct io_uring_task *tctx, unsigned int max_entries, unsigned int *count);
void tctx_task_work(struct callback_head *cb);
@@ -104,7 +104,7 @@ int io_ring_add_registered_file(struct io_uring_task *tctx, struct file *file,
int start, int end);
void io_req_queue_iowq(struct io_kiocb *req);
int io_poll_issue(struct io_kiocb *req, struct io_tw_state *ts);
int io_poll_issue(struct io_kiocb *req, io_tw_token_t tw);
int io_submit_sqes(struct io_ring_ctx *ctx, unsigned int nr);
int io_do_iopoll(struct io_ring_ctx *ctx, bool force_nonspin);
void __io_submit_flush_completions(struct io_ring_ctx *ctx);
@@ -376,7 +376,7 @@ static inline bool io_task_work_pending(struct io_ring_ctx *ctx)
return task_work_pending(current) || io_local_work_pending(ctx);
}
static inline void io_tw_lock(struct io_ring_ctx *ctx, struct io_tw_state *ts)
static inline void io_tw_lock(struct io_ring_ctx *ctx, io_tw_token_t tw)
{
lockdep_assert_held(&ctx->uring_lock);
}