[linux-2.6-block.git] / io_uring / tctx.h

// SPDX-License-Identifier: GPL-2.0

struct io_tctx_node {
	struct list_head	ctx_node;
	struct task_struct	*task;
	struct io_ring_ctx	*ctx;
};

int io_uring_alloc_task_context(struct task_struct *task,
				struct io_ring_ctx *ctx);
void io_uring_del_tctx_node(unsigned long index);
int __io_uring_add_tctx_node(struct io_ring_ctx *ctx, bool submitter);
void io_uring_clean_tctx(struct io_uring_task *tctx);

void io_uring_unreg_ringfd(void);
int io_ringfd_register(struct io_ring_ctx *ctx, void __user *__arg,
		       unsigned nr_args);
int io_ringfd_unregister(struct io_ring_ctx *ctx, void __user *__arg,
			 unsigned nr_args);

/*
 * Note that this task has used io_uring. We use it for cancelation purposes.
 */
static inline int io_uring_add_tctx_node(struct io_ring_ctx *ctx)
{
	struct io_uring_task *tctx = current->io_uring;

	if (likely(tctx && tctx->last == ctx))
		return 0;
	return __io_uring_add_tctx_node(ctx, true);
}
Commit	Line	Data
c9f06aa7 JA	1	// SPDX-License-Identifier: GPL-2.0
c9f06aa7 JA	2
c9f06aa7 JA	3	struct io_tctx_node {
	4	struct list_head ctx_node;
	5	struct task_struct *task;
	6	struct io_ring_ctx *ctx;
	7	};
	8
	9	int io_uring_alloc_task_context(struct task_struct *task,
	10	struct io_ring_ctx *ctx);
	11	void io_uring_del_tctx_node(unsigned long index);
97bbdc06	12	int __io_uring_add_tctx_node(struct io_ring_ctx *ctx, bool submitter);
c9f06aa7 JA	13	void io_uring_clean_tctx(struct io_uring_task *tctx);
	14
	15	void io_uring_unreg_ringfd(void);
	16	int io_ringfd_register(struct io_ring_ctx ctx, void __user __arg,
	17	unsigned nr_args);
	18	int io_ringfd_unregister(struct io_ring_ctx ctx, void __user __arg,
	19	unsigned nr_args);
	20
	21	/*
	22	* Note that this task has used io_uring. We use it for cancelation purposes.
	23	*/
	24	static inline int io_uring_add_tctx_node(struct io_ring_ctx *ctx)
	25	{
	26	struct io_uring_task *tctx = current->io_uring;
	27
	28	if (likely(tctx && tctx->last == ctx))
	29	return 0;
97bbdc06	30	return __io_uring_add_tctx_node(ctx, true);
c9f06aa7	31	}