rsrc.h | Explore in Territory

// SPDX-License-Identifier: GPL-2.0
#ifndef IOU_RSRC_H
#define IOU_RSRC_H

#define IO_NODE_ALLOC_CACHE_MAX …

#define IO_RSRC_TAG_TABLE_SHIFT …
#define IO_RSRC_TAG_TABLE_MAX …
#define IO_RSRC_TAG_TABLE_MASK …

enum { … };

struct io_rsrc_put { … };

rsrc_put_fn;

struct io_rsrc_data { … };

struct io_rsrc_node { … };

struct io_mapped_ubuf { … };

void io_rsrc_node_ref_zero(struct io_rsrc_node *node);
void io_rsrc_node_destroy(struct io_ring_ctx *ctx, struct io_rsrc_node *ref_node);
struct io_rsrc_node *io_rsrc_node_alloc(struct io_ring_ctx *ctx);
int io_queue_rsrc_removal(struct io_rsrc_data *data, unsigned idx, void *rsrc);

int io_import_fixed(int ddir, struct iov_iter *iter,
			   struct io_mapped_ubuf *imu,
			   u64 buf_addr, size_t len);

void __io_sqe_buffers_unregister(struct io_ring_ctx *ctx);
int io_sqe_buffers_unregister(struct io_ring_ctx *ctx);
int io_sqe_buffers_register(struct io_ring_ctx *ctx, void __user *arg,
			    unsigned int nr_args, u64 __user *tags);
void __io_sqe_files_unregister(struct io_ring_ctx *ctx);
int io_sqe_files_unregister(struct io_ring_ctx *ctx);
int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
			  unsigned nr_args, u64 __user *tags);

int io_register_files_update(struct io_ring_ctx *ctx, void __user *arg,
			     unsigned nr_args);
int io_register_rsrc_update(struct io_ring_ctx *ctx, void __user *arg,
			    unsigned size, unsigned type);
int io_register_rsrc(struct io_ring_ctx *ctx, void __user *arg,
			unsigned int size, unsigned int type);

static inline void io_put_rsrc_node(struct io_ring_ctx *ctx, struct io_rsrc_node *node)
{ … }

static inline void io_charge_rsrc_node(struct io_ring_ctx *ctx,
				       struct io_rsrc_node *node)
{ … }

static inline void __io_req_set_rsrc_node(struct io_kiocb *req,
					  struct io_ring_ctx *ctx)
{ … }

static inline void io_req_set_rsrc_node(struct io_kiocb *req,
					struct io_ring_ctx *ctx,
					unsigned int issue_flags)
{ … }

static inline u64 *io_get_tag_slot(struct io_rsrc_data *data, unsigned int idx)
{ … }

static inline int io_rsrc_init(struct io_ring_ctx *ctx)
{ … }

int io_files_update(struct io_kiocb *req, unsigned int issue_flags);
int io_files_update_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);

int __io_account_mem(struct user_struct *user, unsigned long nr_pages);

static inline void __io_unaccount_mem(struct user_struct *user,
				      unsigned long nr_pages)
{ … }

#endif
linux/io_uring/rsrc.h
