bcachefs-tools/include/linux/preempt.h

#ifndef __LINUX_PREEMPT_H
#define __LINUX_PREEMPT_H

extern void preempt_disable(void);
extern void preempt_enable(void);

#define sched_preempt_enable_no_resched()	preempt_enable()
#define preempt_enable_no_resched()		preempt_enable()
#define preempt_check_resched()			do { } while (0)

#define preempt_disable_notrace()		preempt_disable()
#define preempt_enable_no_resched_notrace()	preempt_enable()
#define preempt_enable_notrace()		preempt_enable()
#define preemptible()				0

#endif /* __LINUX_PREEMPT_H */
bcache in userspace; userspace fsck 2017-01-08 12:13:18 +03:00			`#ifndef __LINUX_PREEMPT_H`
			`#define __LINUX_PREEMPT_H`

Change preempt_disable() etc. to use a recursive mutex. This is part of the userspace implementation of the kernel APIs for bcachefs-tools. The previous implementation just provided a barrier, but this isn't sufficient to make the associated percpu implementation safe. Signed-off-by: Justin Husted <sigstop@gmail.com> 2019-10-10 05:27:22 +03:00			`extern void preempt_disable(void);`
			`extern void preempt_enable(void);`

			`#define sched_preempt_enable_no_resched() preempt_enable()`
			`#define preempt_enable_no_resched() preempt_enable()`
bcache in userspace; userspace fsck 2017-01-08 12:13:18 +03:00			`#define preempt_check_resched() do { } while (0)`

Change preempt_disable() etc. to use a recursive mutex. This is part of the userspace implementation of the kernel APIs for bcachefs-tools. The previous implementation just provided a barrier, but this isn't sufficient to make the associated percpu implementation safe. Signed-off-by: Justin Husted <sigstop@gmail.com> 2019-10-10 05:27:22 +03:00			`#define preempt_disable_notrace() preempt_disable()`
			`#define preempt_enable_no_resched_notrace() preempt_enable()`
			`#define preempt_enable_notrace() preempt_enable()`
bcache in userspace; userspace fsck 2017-01-08 12:13:18 +03:00			`#define preemptible() 0`

			`#endif /* __LINUX_PREEMPT_H */`