src/sys/uvm/uvm_pager.h - diff

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Diff for /src/sys/uvm/uvm_pager.h between version 1.28 and 1.28.16.3

version 1.28, 2004/03/24 07:55:01

version 1.28.16.3, 2007/10/27 11:36:55

Line 137 struct uvm_pagerops {

/* special non-standard fault processing */

int (*pgo_fault)(struct uvm_faultinfo *, vaddr_t, struct vm_page **,

int, int, vm_fault_t, vm_prot_t, int);

int, int, vm_prot_t, int);

/* get/read pages */

int (*pgo_get)(struct uvm_object *, voff_t, struct vm_page **,

Line 150 struct uvm_pagerops {

/* pager flags [mostly for flush] */

#define PGO_CLEANIT 0x001 /* write dirty pages to backing store */

#define PGO_SYNCIO 0x002 /* if PGO_CLEANIT: use sync I/O? */

#define PGO_SYNCIO 0x002 /* use sync I/O */

#define PGO_DEACTIVATE 0x004 /* deactivate flushed pages */

#define PGO_FREE 0x008 /* free flushed pages */

/* if PGO_FREE is not set then the pages stay where they are. */

Line 160 struct uvm_pagerops {

#define PGO_BUSYFAIL 0x080 /* fail if a page is busy [put] */

#define PGO_OVERWRITE 0x200 /* pages will be overwritten before unlocked */

#define PGO_PASTEOF 0x400 /* allow allocation of pages past EOF */

#define PGO_NOBLOCKALLOC 0x800 /* backing block allocation is not needed */

#define PGO_NOTIMESTAMP 0x1000 /* don't mark object accessed/modified */

#define PGO_RECLAIM 0x2000 /* object is being reclaimed */

/* page we are not interested in getting */

#define PGO_DONTCARE ((struct vm_page *) -1L) /* [get only] */

Line 167 struct uvm_pagerops {

Line 170 struct uvm_pagerops {

#ifdef _KERNEL

* handle inline options

#ifdef UVM_PAGER_INLINE

#define PAGER_INLINE static __inline

#else

#define PAGER_INLINE /* nothing */

#endif /* UVM_PAGER_INLINE */

* prototypes

void uvm_pager_init(void);

PAGER_INLINE struct vm_page *uvm_pageratop(vaddr_t);

struct vm_page *uvm_pageratop(vaddr_t);

vaddr_t uvm_pagermapin(struct vm_page **, int, int);

void uvm_pagermapout(vaddr_t, int);

extern size_t pager_map_size;

/* Flags to uvm_pagermapin() */

#define UVMPAGER_MAPIN_WAITOK 0x01 /* it's okay to wait */

#define UVMPAGER_MAPIN_READ 0x02 /* device -> host */

#define UVMPAGER_MAPIN_WRITE 0x00 /* host -> device (pseudo flag) */

* XXX

* this is needed until the device strategy interface

* is changed to do physically-addressed i/o.

#ifndef PAGER_MAP_SIZE

#define PAGER_MAP_SIZE (16 * 1024 * 1024)

#endif

#endif /* _KERNEL */

#endif /* _UVM_UVM_PAGER_H_ */

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