| vm_object.c (60755) | vm_object.c (61081) |
|---|---|
| 1/* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * The Mach Operating System project at Carnegie-Mellon University. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 47 unchanged lines hidden (view full) --- 56 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 57 * School of Computer Science 58 * Carnegie Mellon University 59 * Pittsburgh PA 15213-3890 60 * 61 * any improvements or extensions that they make and grant Carnegie the 62 * rights to redistribute these changes. 63 * | 1/* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * The Mach Operating System project at Carnegie-Mellon University. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 47 unchanged lines hidden (view full) --- 56 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 57 * School of Computer Science 58 * Carnegie Mellon University 59 * Pittsburgh PA 15213-3890 60 * 61 * any improvements or extensions that they make and grant Carnegie the 62 * rights to redistribute these changes. 63 * |
| 64 * $FreeBSD: head/sys/vm/vm_object.c 60755 2000-05-21 12:50:18Z peter $ | 64 * $FreeBSD: head/sys/vm/vm_object.c 61081 2000-05-29 22:40:54Z dillon $ |
| 65 */ 66 67/* 68 * Virtual memory object module. 69 */ 70 71#include <sys/param.h> 72#include <sys/systm.h> --- 755 unchanged lines hidden (view full) --- 828 if (tobject == NULL) 829 continue; 830 tpindex += OFF_TO_IDX(tobject->backing_object_offset); 831 goto shadowlookup; 832 } 833 834 /* 835 * If the page is busy or not in a normal active state, | 65 */ 66 67/* 68 * Virtual memory object module. 69 */ 70 71#include <sys/param.h> 72#include <sys/systm.h> --- 755 unchanged lines hidden (view full) --- 828 if (tobject == NULL) 829 continue; 830 tpindex += OFF_TO_IDX(tobject->backing_object_offset); 831 goto shadowlookup; 832 } 833 834 /* 835 * If the page is busy or not in a normal active state, |
| 836 * we skip it. Things can break if we mess with pages 837 * in any of the below states. | 836 * we skip it. If the page is not managed there are no 837 * page queues to mess with. Things can break if we mess 838 * with pages in any of the below states. |
| 838 */ 839 if ( 840 m->hold_count || 841 m->wire_count || | 839 */ 840 if ( 841 m->hold_count || 842 m->wire_count || |
| 843 (m->flags & PG_UNMANAGED) || |
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| 842 m->valid != VM_PAGE_BITS_ALL 843 ) { 844 continue; 845 } 846 847 if (vm_page_sleep_busy(m, TRUE, "madvpo")) 848 goto relookup; 849 --- 539 unchanged lines hidden (view full) --- 1389 int all; 1390 1391 if (object == NULL || 1392 object->resident_page_count == 0) 1393 return; 1394 1395 all = ((end == 0) && (start == 0)); 1396 | 844 m->valid != VM_PAGE_BITS_ALL 845 ) { 846 continue; 847 } 848 849 if (vm_page_sleep_busy(m, TRUE, "madvpo")) 850 goto relookup; 851 --- 539 unchanged lines hidden (view full) --- 1391 int all; 1392 1393 if (object == NULL || 1394 object->resident_page_count == 0) 1395 return; 1396 1397 all = ((end == 0) && (start == 0)); 1398 |
| 1399 /* 1400 * Since physically-backed objects do not use managed pages, we can't 1401 * remove pages from the object (we must instead remove the page 1402 * references, and then destroy the object). 1403 */ 1404 KASSERT(object->type != OBJT_PHYS, ("attempt to remove pages from a physical object")); 1405 |
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| 1397 vm_object_pip_add(object, 1); 1398again: 1399 size = end - start; 1400 if (all || size > object->resident_page_count / 4) { 1401 for (p = TAILQ_FIRST(&object->memq); p != NULL; p = next) { 1402 next = TAILQ_NEXT(p, listq); 1403 if (all || ((start <= p->pindex) && (p->pindex < end))) { 1404 if (p->wire_count != 0) { --- 415 unchanged lines hidden --- | 1406 vm_object_pip_add(object, 1); 1407again: 1408 size = end - start; 1409 if (all || size > object->resident_page_count / 4) { 1410 for (p = TAILQ_FIRST(&object->memq); p != NULL; p = next) { 1411 next = TAILQ_NEXT(p, listq); 1412 if (all || ((start <= p->pindex) && (p->pindex < end))) { 1413 if (p->wire_count != 0) { --- 415 unchanged lines hidden --- |