include/linux/io_uring.h

File Facts

System

Linux kernel

Corpus path

include/linux/io_uring.h

Extension

.h

Size

1342 bytes

Lines

64

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/sched.h
• linux/xarray.h
• uapi/linux/io_uring.h

Detected Declarations

• function io_uring_files_cancel
• function io_uring_task_cancel
• function io_uring_free
• function io_uring_fork
• function io_uring_task_cancel
• function io_is_uring_fops
• function io_uring_fork

Annotated Snippet

#ifndef _LINUX_IO_URING_H
#define _LINUX_IO_URING_H

#include <linux/sched.h>
#include <linux/xarray.h>
#include <uapi/linux/io_uring.h>

#if defined(CONFIG_IO_URING)
void __io_uring_cancel(bool cancel_all);
void __io_uring_free(struct task_struct *tsk);
void io_uring_unreg_ringfd(void);
const char *io_uring_get_opcode(u8 opcode);
bool io_is_uring_fops(struct file *file);
int __io_uring_fork(struct task_struct *tsk);

static inline void io_uring_files_cancel(void)
{
	if (current->io_uring)
		__io_uring_cancel(false);
}
static inline void io_uring_task_cancel(void)
{
	if (current->io_uring)
		__io_uring_cancel(true);
}
static inline void io_uring_free(struct task_struct *tsk)
{
	if (tsk->io_uring || tsk->io_uring_restrict)
		__io_uring_free(tsk);
}
static inline int io_uring_fork(struct task_struct *tsk)
{
	if (tsk->io_uring_restrict)
		return __io_uring_fork(tsk);

	return 0;
}
#else
static inline void io_uring_task_cancel(void)
{
}
static inline void io_uring_files_cancel(void)
{
}
static inline void io_uring_free(struct task_struct *tsk)
{
}
static inline const char *io_uring_get_opcode(u8 opcode)
{
	return "";
}
static inline bool io_is_uring_fops(struct file *file)
{
	return false;
}
static inline int io_uring_fork(struct task_struct *tsk)
{
	return 0;
}
#endif

#endif

Annotation

• Immediate include surface: `linux/sched.h`, `linux/xarray.h`, `uapi/linux/io_uring.h`.
• Detected declarations: `function io_uring_files_cancel`, `function io_uring_task_cancel`, `function io_uring_free`, `function io_uring_fork`, `function io_uring_task_cancel`, `function io_is_uring_fops`, `function io_uring_fork`.
• Atlas domain: Core OS / Core Kernel Interface.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.