mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 13:55:32 +00:00
![Jens Axboe](/assets/img/avatar_default.png)
This is, by definition, a per-task structure. So store it in the task context, instead of doing carrying it in each io_kiocb. We're being a bit inefficient if members have changed, as that requires an alloc and copy of a new io_identity struct. The next patch will fix that up. Signed-off-by: Jens Axboe <axboe@kernel.dk>
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
#ifndef _LINUX_IO_URING_H
|
|
#define _LINUX_IO_URING_H
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/xarray.h>
|
|
|
|
struct io_identity {
|
|
struct files_struct *files;
|
|
struct mm_struct *mm;
|
|
#ifdef CONFIG_BLK_CGROUP
|
|
struct cgroup_subsys_state *blkcg_css;
|
|
#endif
|
|
const struct cred *creds;
|
|
struct nsproxy *nsproxy;
|
|
struct fs_struct *fs;
|
|
unsigned long fsize;
|
|
refcount_t count;
|
|
};
|
|
|
|
struct io_uring_task {
|
|
/* submission side */
|
|
struct xarray xa;
|
|
struct wait_queue_head wait;
|
|
struct file *last;
|
|
atomic_long_t req_issue;
|
|
struct io_identity identity;
|
|
|
|
/* completion side */
|
|
bool in_idle ____cacheline_aligned_in_smp;
|
|
atomic_long_t req_complete;
|
|
};
|
|
|
|
#if defined(CONFIG_IO_URING)
|
|
struct sock *io_uring_get_socket(struct file *file);
|
|
void __io_uring_task_cancel(void);
|
|
void __io_uring_files_cancel(struct files_struct *files);
|
|
void __io_uring_free(struct task_struct *tsk);
|
|
|
|
static inline void io_uring_task_cancel(void)
|
|
{
|
|
if (current->io_uring && !xa_empty(¤t->io_uring->xa))
|
|
__io_uring_task_cancel();
|
|
}
|
|
static inline void io_uring_files_cancel(struct files_struct *files)
|
|
{
|
|
if (current->io_uring && !xa_empty(¤t->io_uring->xa))
|
|
__io_uring_files_cancel(files);
|
|
}
|
|
static inline void io_uring_free(struct task_struct *tsk)
|
|
{
|
|
if (tsk->io_uring)
|
|
__io_uring_free(tsk);
|
|
}
|
|
#else
|
|
static inline struct sock *io_uring_get_socket(struct file *file)
|
|
{
|
|
return NULL;
|
|
}
|
|
static inline void io_uring_task_cancel(void)
|
|
{
|
|
}
|
|
static inline void io_uring_files_cancel(struct files_struct *files)
|
|
{
|
|
}
|
|
static inline void io_uring_free(struct task_struct *tsk)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif
|