79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
#ifndef IOU_CORE_H
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#define IOU_CORE_H
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#include <linux/errno.h>
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#include <linux/lockdep.h>
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#include "io_uring_types.h"
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enum {
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IOU_OK = 0,
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IOU_ISSUE_SKIP_COMPLETE = -EIOCBQUEUED,
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};
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static inline void req_set_fail(struct io_kiocb *req)
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{
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req->flags |= REQ_F_FAIL;
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if (req->flags & REQ_F_CQE_SKIP) {
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req->flags &= ~REQ_F_CQE_SKIP;
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req->flags |= REQ_F_SKIP_LINK_CQES;
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}
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}
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static inline void io_req_set_res(struct io_kiocb *req, s32 res, u32 cflags)
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{
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req->cqe.res = res;
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req->cqe.flags = cflags;
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}
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static inline bool req_has_async_data(struct io_kiocb *req)
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{
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return req->flags & REQ_F_ASYNC_DATA;
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}
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static inline void io_put_file(struct file *file)
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{
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if (file)
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fput(file);
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}
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static inline void io_ring_submit_unlock(struct io_ring_ctx *ctx,
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unsigned issue_flags)
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{
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lockdep_assert_held(&ctx->uring_lock);
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if (issue_flags & IO_URING_F_UNLOCKED)
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mutex_unlock(&ctx->uring_lock);
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}
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static inline void io_ring_submit_lock(struct io_ring_ctx *ctx,
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unsigned issue_flags)
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{
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/*
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* "Normal" inline submissions always hold the uring_lock, since we
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* grab it from the system call. Same is true for the SQPOLL offload.
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* The only exception is when we've detached the request and issue it
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* from an async worker thread, grab the lock for that case.
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*/
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if (issue_flags & IO_URING_F_UNLOCKED)
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mutex_lock(&ctx->uring_lock);
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lockdep_assert_held(&ctx->uring_lock);
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}
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void __io_req_complete(struct io_kiocb *req, unsigned issue_flags);
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struct file *io_file_get_normal(struct io_kiocb *req, int fd);
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struct file *io_file_get_fixed(struct io_kiocb *req, int fd,
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unsigned issue_flags);
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int io_fixed_fd_install(struct io_kiocb *req, unsigned int issue_flags,
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struct file *file, unsigned int file_slot);
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int io_rsrc_node_switch_start(struct io_ring_ctx *ctx);
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int io_queue_rsrc_removal(struct io_rsrc_data *data, unsigned idx,
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struct io_rsrc_node *node, void *rsrc);
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void io_rsrc_node_switch(struct io_ring_ctx *ctx,
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struct io_rsrc_data *data_to_kill);
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bool io_is_uring_fops(struct file *file);
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bool io_alloc_async_data(struct io_kiocb *req);
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void io_req_task_work_add(struct io_kiocb *req);
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#endif
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