swap_pager.h File Reference

#include <sys/_types.h>

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Data Structures
struct	swdevt

Macros
#define	SW_UNMAPPED   0x01
#define	SW_CLOSING   0x04

Typedefs
typedef void	sw_strategy_t(struct buf *, struct swdevt *)
typedef void	sw_close_t(struct thread *, struct swdevt *)

Functions
int	swap_dev_info (int name, struct xswdev *xs, char *devname, size_t len)
void	swap_pager_copy (vm_object_t, vm_object_t, vm_pindex_t, int)
vm_pindex_t	swap_pager_find_least (vm_object_t object, vm_pindex_t pindex)
void	swap_pager_swap_init (void)
int	swap_pager_nswapdev (void)
int	swap_pager_reserve (vm_object_t, vm_pindex_t, vm_pindex_t)
void	swap_pager_status (int *total, int *used)
u_long	swap_pager_swapped_pages (vm_object_t object)
void	swapoff_all (void)
bool	swap_pager_init_object (vm_object_t object, void *handle, struct ucred *cred, vm_ooffset_t size, vm_ooffset_t offset)

Variables
int	swap_pager_avail
int	nsw_cluster_max

Macro Definition Documentation

SW_CLOSING

#define SW_CLOSING   0x04

Definition at line 70 of file swap_pager.h.

SW_UNMAPPED

#define SW_UNMAPPED   0x01

Definition at line 69 of file swap_pager.h.

Typedef Documentation

sw_close_t

typedef void sw_close_t(struct thread *, struct swdevt *)

Definition at line 49 of file swap_pager.h.

sw_strategy_t

typedef void sw_strategy_t(struct buf *, struct swdevt *)

Definition at line 48 of file swap_pager.h.

Function Documentation

swap_dev_info()

int swap_dev_info	(	int	name,
		struct xswdev *	xs,
		char *	devname,
		size_t	len
	)

Definition at line 2640 of file swap_pager.c.

References swdevt::sw_dev, sw_dev_mtx, swdevt::sw_flags, swdevt::sw_nblks, swdevt::sw_used, swdevt::sw_vp, xswdev::xsw_dev, xswdev::xsw_flags, xswdev::xsw_nblks, xswdev::xsw_used, xswdev::xsw_version, and XSWDEV_VERSION.

Referenced by sysctl_vm_swap_info().

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swap_pager_copy()

void swap_pager_copy	(	vm_object_t	srcobject,
		vm_object_t	dstobject,
		vm_pindex_t	offset,
		int	destroysource
	)

Definition at line 1060 of file swap_pager.c.

References vm_object::flags, vm_object::handle, NOBJLIST, OBJ_ANON, OBJ_SWAP, OBJT_DEFAULT, vm_object::size, sw_alloc_sx, swp_pager_meta_free_all(), swp_pager_meta_transfer(), vm_object::type, VM_OBJECT_ASSERT_WLOCKED, vm_object_clear_flag(), VM_OBJECT_WLOCK, and VM_OBJECT_WUNLOCK.

Referenced by vm_object_collapse(), and vm_object_split().

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swap_pager_find_least()

vm_pindex_t swap_pager_find_least	(	vm_object_t	object,
		vm_pindex_t	pindex
	)

Definition at line 2293 of file swap_pager.c.

References swblk::d, vm_object::flags, OBJ_SWAP, swblk::p, vm_object::size, SWAP_META_PAGES, vm_object::swp, vm_object::swp_blks, vm_object::un_pager, and VM_OBJECT_ASSERT_LOCKED.

Referenced by vm_object_scan_all_shadowed().

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swap_pager_init_object()

bool swap_pager_init_object	(	vm_object_t	object,
		void *	handle,
		struct ucred *	cred,
		vm_ooffset_t	size,
		vm_ooffset_t	offset
	)

Definition at line 668 of file swap_pager.c.

References swap_reserve_by_cred().

Referenced by swap_pager_alloc_init().

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swap_pager_nswapdev()

int swap_pager_nswapdev

(

void

)

Definition at line 1774 of file swap_pager.c.

Referenced by vm_pageout_swapoff().

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swap_pager_reserve()

int swap_pager_reserve	(	vm_object_t	object,
		vm_pindex_t	start,
		vm_pindex_t	size
	)

Definition at line 985 of file swap_pager.c.

References swp_pager_freeswapspace(), swp_pager_getswapspace(), swp_pager_init_freerange(), swp_pager_meta_build(), swp_pager_meta_free(), swp_pager_update_freerange(), VM_OBJECT_WLOCK, and VM_OBJECT_WUNLOCK.

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swap_pager_status()

void swap_pager_status	(	int *	total,
		int *	used
	)

Definition at line 2631 of file swap_pager.c.

References swap_pager_avail.

swap_pager_swap_init()

void swap_pager_swap_init

(

void

)

Definition at line 596 of file swap_pager.c.

References nsw_wcount_async, nsw_wcount_async_max, pbuf_zsecond_create(), SWAP_META_PAGES, swblk_zone, swbuf_mtx, swpctrie_zone, swrbuf_zone, swwbuf_zone, uma_zcreate(), uma_zone_get_max(), uma_zone_reserve_kva(), and vm_cnt.

Referenced by vm_pageout().

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swap_pager_swapped_pages()

u_long swap_pager_swapped_pages

(

vm_object_t

object

)

Definition at line 1790 of file swap_pager.c.

References swblk::d, vm_object::flags, OBJ_SWAP, swblk::p, SWAP_META_PAGES, vm_object::swp, vm_object::swp_blks, vm_object::un_pager, and VM_OBJECT_ASSERT_LOCKED.

Referenced by vm_object_list_handler().

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swapoff_all()

void swapoff_all

(

void

)

Definition at line 2601 of file swap_pager.c.

References sw_dev_mtx, swdevt::sw_vp, and swapoff_one().

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Variable Documentation

nsw_cluster_max

int nsw_cluster_max

extern

Definition at line 387 of file swap_pager.c.

Referenced by swap_pager_init(), and swap_pager_putpages().

swap_pager_avail

int swap_pager_avail

extern

Referenced by swap_pager_status(), swapoff_one(), swaponsomething(), swp_pager_freeswapspace(), swp_pager_getswapspace(), swp_sizecheck(), and vm_pageout_oom().