4 #include <linux/errno.h>
5 #include <linux/lockdep.h>
6 #include "io_uring_types.h"
10 IOU_ISSUE_SKIP_COMPLETE = -EIOCBQUEUED,
13 static inline void req_set_fail(struct io_kiocb *req)
15 req->flags |= REQ_F_FAIL;
16 if (req->flags & REQ_F_CQE_SKIP) {
17 req->flags &= ~REQ_F_CQE_SKIP;
18 req->flags |= REQ_F_SKIP_LINK_CQES;
22 static inline void io_req_set_res(struct io_kiocb *req, s32 res, u32 cflags)
25 req->cqe.flags = cflags;
28 static inline bool req_has_async_data(struct io_kiocb *req)
30 return req->flags & REQ_F_ASYNC_DATA;
33 static inline void io_put_file(struct file *file)
39 static inline void io_ring_submit_unlock(struct io_ring_ctx *ctx,
42 lockdep_assert_held(&ctx->uring_lock);
43 if (issue_flags & IO_URING_F_UNLOCKED)
44 mutex_unlock(&ctx->uring_lock);
47 static inline void io_ring_submit_lock(struct io_ring_ctx *ctx,
51 * "Normal" inline submissions always hold the uring_lock, since we
52 * grab it from the system call. Same is true for the SQPOLL offload.
53 * The only exception is when we've detached the request and issue it
54 * from an async worker thread, grab the lock for that case.
56 if (issue_flags & IO_URING_F_UNLOCKED)
57 mutex_lock(&ctx->uring_lock);
58 lockdep_assert_held(&ctx->uring_lock);
61 static inline void io_commit_cqring(struct io_ring_ctx *ctx)
63 /* order cqe stores with ring update */
64 smp_store_release(&ctx->rings->cq.tail, ctx->cached_cq_tail);
67 void __io_req_complete(struct io_kiocb *req, unsigned issue_flags);
69 bool io_fill_cqe_aux(struct io_ring_ctx *ctx, u64 user_data, s32 res,
71 void io_cqring_ev_posted(struct io_ring_ctx *ctx);
72 void __user *io_buffer_select(struct io_kiocb *req, size_t *len,
73 unsigned int issue_flags);
74 unsigned int io_put_kbuf(struct io_kiocb *req, unsigned issue_flags);
76 static inline bool io_do_buffer_select(struct io_kiocb *req)
78 if (!(req->flags & REQ_F_BUFFER_SELECT))
80 return !(req->flags & (REQ_F_BUFFER_SELECTED|REQ_F_BUFFER_RING));
83 struct file *io_file_get_normal(struct io_kiocb *req, int fd);
84 struct file *io_file_get_fixed(struct io_kiocb *req, int fd,
85 unsigned issue_flags);
86 int io_fixed_fd_install(struct io_kiocb *req, unsigned int issue_flags,
87 struct file *file, unsigned int file_slot);
88 int io_install_fixed_file(struct io_kiocb *req, struct file *file,
89 unsigned int issue_flags, u32 slot_index);
91 int io_rsrc_node_switch_start(struct io_ring_ctx *ctx);
92 int io_queue_rsrc_removal(struct io_rsrc_data *data, unsigned idx,
93 struct io_rsrc_node *node, void *rsrc);
94 void io_rsrc_node_switch(struct io_ring_ctx *ctx,
95 struct io_rsrc_data *data_to_kill);
96 bool io_is_uring_fops(struct file *file);
97 bool io_alloc_async_data(struct io_kiocb *req);
98 void io_req_task_work_add(struct io_kiocb *req);