sys/vm/vm_object.h

64  *	Virtual memory object module definitions.
80  *	vm_object_t		Virtual memory object.
82  *	The root of cached pages pool is protected by both the per-object lock
84  *	On insert in the cache radix trie, the per-object lock is expected
90  *	pages with only the per-object lock held, thereby reducing contention
95  *	(o)	per-object lock
117 	struct vm_object *backing_object; /* object that I'm a shadow of */
118 	vm_ooffset_t backing_object_offset;/* Offset in backing object */
158 		 *		     if any, which uses the vm object
186 #define	OBJ_NOSPLIT	0x0010		/* dont split this object */
188 #define OBJ_MIGHTBEDIRTY 0x0100		/* object might be dirty, only for vnode */
213 extern struct mtx vm_object_list_mtx;	/* lock for object list and count */
221 #define	VM_OBJECT_ASSERT_LOCKED(object)					\
222 	rw_assert(&(object)->lock, RA_LOCKED)
223 #define	VM_OBJECT_ASSERT_RLOCKED(object)				\
224 	rw_assert(&(object)->lock, RA_RLOCKED)
225 #define	VM_OBJECT_ASSERT_WLOCKED(object)				\
226 	rw_assert(&(object)->lock, RA_WLOCKED)
227 #define	VM_OBJECT_LOCK_DOWNGRADE(object)				\
228 	rw_downgrade(&(object)->lock)
229 #define	VM_OBJECT_RLOCK(object)						\
230 	rw_rlock(&(object)->lock)
231 #define	VM_OBJECT_RUNLOCK(object)					\
232 	rw_runlock(&(object)->lock)
233 #define	VM_OBJECT_SLEEP(object, wchan, pri, wmesg, timo)		\
234 	rw_sleep((wchan), &(object)->lock, (pri), (wmesg), (timo))
235 #define	VM_OBJECT_TRYRLOCK(object)					\
236 	rw_try_rlock(&(object)->lock)
237 #define	VM_OBJECT_TRYWLOCK(object)					\
238 	rw_try_wlock(&(object)->lock)
239 #define	VM_OBJECT_WLOCK(object)						\
240 	rw_wlock(&(object)->lock)
241 #define	VM_OBJECT_WUNLOCK(object)					\
242 	rw_wunlock(&(object)->lock)
245  *	The object must be locked or thread private.
248 vm_object_set_flag(vm_object_t object, u_short bits)
251 	object->flags |= bits;
254 void vm_object_clear_flag(vm_object_t object, u_short bits);
255 void vm_object_pip_add(vm_object_t object, short i);
256 void vm_object_pip_subtract(vm_object_t object, short i);
257 void vm_object_pip_wakeup(vm_object_t object);
258 void vm_object_pip_wakeupn(vm_object_t object, short i);
259 void vm_object_pip_wait(vm_object_t object, char *waitid);
262 vm_object_cache_is_empty(vm_object_t object)
265 	return (vm_radix_is_empty(&object->cache));
278 void vm_object_page_cache(vm_object_t object, vm_pindex_t start,
280 boolean_t vm_object_page_clean(vm_object_t object, vm_ooffset_t start,
282 void vm_object_page_remove(vm_object_t object, vm_pindex_t start,
288 int  vm_object_set_memattr(vm_object_t object, vm_memattr_t memattr);