[mirror_spl-debian.git] / include / sys / vmsystm.h

#ifndef _SPL_VMSYSTM_H
#define _SPL_VMSYSTM_H

#include <linux/mm.h>
#include <sys/types.h>

extern vmem_t *zio_alloc_arena;		/* arena for zio caches */

#define physmem				num_physpages
#define ptob(pages)			(pages * PAGE_SIZE)
#define membar_producer()		smp_wmb()

#define copyin(from, to, size)		copy_from_user(to, from, size)
#define copyout(from, to, size)		copy_to_user(to, from, size)

#if 0
/* The approximate total number of free pages */
#define freemem				0

/* The average number of free pages over the last 5 seconds */
#define avefree				0

/* The average number of free pages over the last 30 seconds */
#define avefree30			0

/* A guess as to how much memory has been promised to
 * processes but not yet allocated */
#define deficit				0

/* A guess as to how many page are needed to satisfy
 * stalled page creation requests */
#define needfree			0

/* A bootlean the controls the setting of deficit */
#define desperate

/* When free memory is above this limit, no paging or swapping is done */
#define lotsfree			0

/* When free memory is above this limit, swapping is not performed */
#define desfree				0

/* Threshold for many low memory tests, e.g. swapping is
 * more active below this limit */
#define minfree				0
#endif

#endif /* SPL_VMSYSTM_H */
Commit	Line	Data
a713518f	1	#ifndef _SPL_VMSYSTM_H
	2	#define _SPL_VMSYSTM_H
	3
	4	#include <linux/mm.h>
af828292	5	#include <sys/types.h>
	6
	7	extern vmem_t zio_alloc_arena; / arena for zio caches */
a713518f	8
a713518f	9	#define physmem num_physpages
77b1fe8f	10	#define ptob(pages) (pages * PAGE_SIZE)
	11	#define membar_producer() smp_wmb()
	12
2f5d55aa	13	#define copyin(from, to, size) copy_from_user(to, from, size)
	14	#define copyout(from, to, size) copy_to_user(to, from, size)
	15
77b1fe8f	16	#if 0
	17	/* The approximate total number of free pages */
	18	#define freemem 0
	19
	20	/* The average number of free pages over the last 5 seconds */
	21	#define avefree 0
	22
	23	/* The average number of free pages over the last 30 seconds */
	24	#define avefree30 0
	25
	26	/* A guess as to how much memory has been promised to
	27	* processes but not yet allocated */
	28	#define deficit 0
	29
	30	/* A guess as to how many page are needed to satisfy
	31	* stalled page creation requests */
	32	#define needfree 0
	33
	34	/* A bootlean the controls the setting of deficit */
	35	#define desperate
	36
	37	/* When free memory is above this limit, no paging or swapping is done */
	38	#define lotsfree 0
	39
	40	/* When free memory is above this limit, swapping is not performed */
	41	#define desfree 0
	42
	43	/* Threshold for many low memory tests, e.g. swapping is
	44	* more active below this limit */
	45	#define minfree 0
	46	#endif
a713518f	47
a713518f	48	#endif /* SPL_VMSYSTM_H */