Lines Matching full:fs
177 static void vm_fault_dontneed(const struct faultstate *fs, vm_offset_t vaddr,
179 static void vm_fault_prefault(const struct faultstate *fs, vm_offset_t addra,
244 vm_fault_unlock_map(struct faultstate *fs) in vm_fault_unlock_map() argument
247 if (fs->lookup_still_valid) { in vm_fault_unlock_map()
248 vm_map_lookup_done(fs->map, fs->entry); in vm_fault_unlock_map()
249 fs->lookup_still_valid = false; in vm_fault_unlock_map()
254 vm_fault_unlock_vp(struct faultstate *fs) in vm_fault_unlock_vp() argument
257 if (fs->vp != NULL) { in vm_fault_unlock_vp()
258 vput(fs->vp); in vm_fault_unlock_vp()
259 fs->vp = NULL; in vm_fault_unlock_vp()
264 vm_fault_deallocate(struct faultstate *fs) in vm_fault_deallocate() argument
267 vm_fault_page_release(&fs->m_cow); in vm_fault_deallocate()
268 vm_fault_page_release(&fs->m); in vm_fault_deallocate()
269 vm_object_pip_wakeup(fs->object); in vm_fault_deallocate()
270 if (fs->object != fs->first_object) { in vm_fault_deallocate()
271 VM_OBJECT_WLOCK(fs->first_object); in vm_fault_deallocate()
272 vm_fault_page_free(&fs->first_m); in vm_fault_deallocate()
273 VM_OBJECT_WUNLOCK(fs->first_object); in vm_fault_deallocate()
274 vm_object_pip_wakeup(fs->first_object); in vm_fault_deallocate()
276 vm_object_deallocate(fs->first_object); in vm_fault_deallocate()
277 vm_fault_unlock_map(fs); in vm_fault_deallocate()
278 vm_fault_unlock_vp(fs); in vm_fault_deallocate()
282 vm_fault_unlock_and_deallocate(struct faultstate *fs) in vm_fault_unlock_and_deallocate() argument
285 VM_OBJECT_UNLOCK(fs->object); in vm_fault_unlock_and_deallocate()
286 vm_fault_deallocate(fs); in vm_fault_unlock_and_deallocate()
290 vm_fault_dirty(struct faultstate *fs, vm_page_t m) in vm_fault_dirty() argument
294 if (((fs->prot & VM_PROT_WRITE) == 0 && in vm_fault_dirty()
295 (fs->fault_flags & VM_FAULT_DIRTY) == 0) || in vm_fault_dirty()
301 need_dirty = ((fs->fault_type & VM_PROT_WRITE) != 0 && in vm_fault_dirty()
302 (fs->fault_flags & VM_FAULT_WIRE) == 0) || in vm_fault_dirty()
303 (fs->fault_flags & VM_FAULT_DIRTY) != 0; in vm_fault_dirty()
324 if ((fs->entry->eflags & MAP_ENTRY_NOSYNC) != 0) in vm_fault_dirty()
333 * Unlocks fs.first_object and fs.map on success.
336 vm_fault_soft_fast(struct faultstate *fs) in vm_fault_soft_fast() argument
346 MPASS(fs->vp == NULL); in vm_fault_soft_fast()
355 m = vm_page_lookup_unlocked(fs->first_object, fs->first_pindex); in vm_fault_soft_fast()
357 ((fs->prot & VM_PROT_WRITE) != 0 && vm_page_busied(m))) { in vm_fault_soft_fast()
358 VM_OBJECT_WLOCK(fs->first_object); in vm_fault_soft_fast()
362 vaddr = fs->vaddr; in vm_fault_soft_fast()
364 VM_OBJECT_RLOCK(fs->first_object); in vm_fault_soft_fast()
371 if (m->object != fs->first_object || m->pindex != fs->first_pindex) in vm_fault_soft_fast()
374 vm_object_busy(fs->first_object); in vm_fault_soft_fast()
377 ((fs->prot & VM_PROT_WRITE) != 0 && vm_page_busied(m))) in vm_fault_soft_fast()
389 if ((fs->prot & VM_PROT_WRITE) != 0) { in vm_fault_soft_fast()
397 if ((fs->first_object->flags & OBJ_UNMANAGED) == 0) in vm_fault_soft_fast()
400 while (rounddown2(vaddr, pagesizes[psind]) < fs->entry->start || in vm_fault_soft_fast()
401 roundup2(vaddr + 1, pagesizes[psind]) > fs->entry->end || in vm_fault_soft_fast()
405 !pmap_ps_enabled(fs->map->pmap)) { in vm_fault_soft_fast()
420 fs->fault_type |= VM_PROT_WRITE; in vm_fault_soft_fast()
424 if (pmap_enter(fs->map->pmap, vaddr, m_map, fs->prot, fs->fault_type | in vm_fault_soft_fast()
425 PMAP_ENTER_NOSLEEP | (fs->wired ? PMAP_ENTER_WIRED : 0), psind) != in vm_fault_soft_fast()
428 if (fs->m_hold != NULL) { in vm_fault_soft_fast()
429 (*fs->m_hold) = m; in vm_fault_soft_fast()
432 if (psind == 0 && !fs->wired) in vm_fault_soft_fast()
433 vm_fault_prefault(fs, vaddr, PFBAK, PFFOR, true); in vm_fault_soft_fast()
434 VM_OBJECT_RUNLOCK(fs->first_object); in vm_fault_soft_fast()
435 vm_fault_dirty(fs, m); in vm_fault_soft_fast()
436 vm_object_unbusy(fs->first_object); in vm_fault_soft_fast()
437 vm_map_lookup_done(fs->map, fs->entry); in vm_fault_soft_fast()
441 vm_object_unbusy(fs->first_object); in vm_fault_soft_fast()
443 if (!VM_OBJECT_TRYUPGRADE(fs->first_object)) { in vm_fault_soft_fast()
444 VM_OBJECT_RUNLOCK(fs->first_object); in vm_fault_soft_fast()
445 VM_OBJECT_WLOCK(fs->first_object); in vm_fault_soft_fast()
451 vm_fault_restore_map_lock(struct faultstate *fs) in vm_fault_restore_map_lock() argument
454 VM_OBJECT_ASSERT_WLOCKED(fs->first_object); in vm_fault_restore_map_lock()
455 MPASS(blockcount_read(&fs->first_object->paging_in_progress) > 0); in vm_fault_restore_map_lock()
457 if (!vm_map_trylock_read(fs->map)) { in vm_fault_restore_map_lock()
458 VM_OBJECT_WUNLOCK(fs->first_object); in vm_fault_restore_map_lock()
459 vm_map_lock_read(fs->map); in vm_fault_restore_map_lock()
460 VM_OBJECT_WLOCK(fs->first_object); in vm_fault_restore_map_lock()
462 fs->lookup_still_valid = true; in vm_fault_restore_map_lock()
498 vm_fault_populate(struct faultstate *fs) in vm_fault_populate() argument
506 MPASS(fs->object == fs->first_object); in vm_fault_populate()
507 VM_OBJECT_ASSERT_WLOCKED(fs->first_object); in vm_fault_populate()
508 MPASS(blockcount_read(&fs->first_object->paging_in_progress) > 0); in vm_fault_populate()
509 MPASS(fs->first_object->backing_object == NULL); in vm_fault_populate()
510 MPASS(fs->lookup_still_valid); in vm_fault_populate()
512 pager_first = OFF_TO_IDX(fs->entry->offset); in vm_fault_populate()
513 pager_last = pager_first + atop(fs->entry->end - fs->entry->start) - 1; in vm_fault_populate()
514 vm_fault_unlock_map(fs); in vm_fault_populate()
515 vm_fault_unlock_vp(fs); in vm_fault_populate()
527 rv = vm_pager_populate(fs->first_object, fs->first_pindex, in vm_fault_populate()
528 fs->fault_type, fs->entry->max_protection, &pager_first, in vm_fault_populate()
531 VM_OBJECT_ASSERT_WLOCKED(fs->first_object); in vm_fault_populate()
537 vm_fault_restore_map_lock(fs); in vm_fault_populate()
538 if (fs->map->timestamp != fs->map_generation) in vm_fault_populate()
547 MPASS(fs->first_pindex <= pager_last); in vm_fault_populate()
548 MPASS(fs->first_pindex >= pager_first); in vm_fault_populate()
549 MPASS(pager_last < fs->first_object->size); in vm_fault_populate()
551 vm_fault_restore_map_lock(fs); in vm_fault_populate()
552 bdry_idx = MAP_ENTRY_SPLIT_BOUNDARY_INDEX(fs->entry); in vm_fault_populate()
553 if (fs->map->timestamp != fs->map_generation) { in vm_fault_populate()
555 vm_fault_populate_cleanup(fs->first_object, pager_first, in vm_fault_populate()
558 m = vm_page_lookup(fs->first_object, pager_first); in vm_fault_populate()
559 if (m != fs->m) in vm_fault_populate()
574 m = vm_page_lookup(fs->first_object, pager_first); in vm_fault_populate()
576 VM_OBJECT_WUNLOCK(fs->first_object); in vm_fault_populate()
577 vaddr = fs->entry->start + IDX_TO_OFF(pager_first) - in vm_fault_populate()
578 fs->entry->offset; in vm_fault_populate()
582 (uintmax_t)fs->entry->start, (uintmax_t)pager_first, in vm_fault_populate()
583 (uintmax_t)fs->entry->offset, (uintmax_t)vaddr)); in vm_fault_populate()
587 rv = pmap_enter(fs->map->pmap, vaddr, m, fs->prot, in vm_fault_populate()
588 fs->fault_type | (fs->wired ? PMAP_ENTER_WIRED : 0) | in vm_fault_populate()
590 VM_OBJECT_WLOCK(fs->first_object); in vm_fault_populate()
596 if ((fs->fault_flags & VM_FAULT_WIRE) != 0) { in vm_fault_populate()
600 if (fs->m_hold != NULL) { in vm_fault_populate()
601 *fs->m_hold = m + (fs->first_pindex - pager_first); in vm_fault_populate()
602 vm_page_wire(*fs->m_hold); in vm_fault_populate()
614 map_first = OFF_TO_IDX(fs->entry->offset); in vm_fault_populate()
616 vm_fault_populate_cleanup(fs->first_object, pager_first, in vm_fault_populate()
620 map_last = map_first + atop(fs->entry->end - fs->entry->start) - 1; in vm_fault_populate()
622 vm_fault_populate_cleanup(fs->first_object, map_last + 1, in vm_fault_populate()
627 m = vm_page_lookup(fs->first_object, pidx); in vm_fault_populate()
628 vaddr = fs->entry->start + IDX_TO_OFF(pidx) - fs->entry->offset; in vm_fault_populate()
634 !pmap_ps_enabled(fs->map->pmap))) in vm_fault_populate()
640 vm_fault_dirty(fs, &m[i]); in vm_fault_populate()
642 VM_OBJECT_WUNLOCK(fs->first_object); in vm_fault_populate()
643 rv = pmap_enter(fs->map->pmap, vaddr, m, fs->prot, fs->fault_type | in vm_fault_populate()
644 (fs->wired ? PMAP_ENTER_WIRED : 0), psind); in vm_fault_populate()
657 MPASS(!fs->wired); in vm_fault_populate()
659 rv = pmap_enter(fs->map->pmap, vaddr + ptoa(i), in vm_fault_populate()
660 &m[i], fs->prot, fs->fault_type, 0); in vm_fault_populate()
665 VM_OBJECT_WLOCK(fs->first_object); in vm_fault_populate()
667 if ((fs->fault_flags & VM_FAULT_WIRE) != 0 && in vm_fault_populate()
668 m[i].pindex == fs->first_pindex) in vm_fault_populate()
672 if (fs->m_hold != NULL && in vm_fault_populate()
673 m[i].pindex == fs->first_pindex) { in vm_fault_populate()
674 (*fs->m_hold) = &m[i]; in vm_fault_populate()
786 vm_fault_object_ensure_wlocked(struct faultstate *fs) in vm_fault_object_ensure_wlocked() argument
788 if (fs->object == fs->first_object) in vm_fault_object_ensure_wlocked()
789 VM_OBJECT_ASSERT_WLOCKED(fs->object); in vm_fault_object_ensure_wlocked()
791 if (!fs->can_read_lock) { in vm_fault_object_ensure_wlocked()
792 VM_OBJECT_ASSERT_WLOCKED(fs->object); in vm_fault_object_ensure_wlocked()
796 if (VM_OBJECT_WOWNED(fs->object)) in vm_fault_object_ensure_wlocked()
799 if (VM_OBJECT_TRYUPGRADE(fs->object)) in vm_fault_object_ensure_wlocked()
806 vm_fault_lock_vnode(struct faultstate *fs, bool objlocked) in vm_fault_lock_vnode() argument
811 if (fs->object->type != OBJT_VNODE) in vm_fault_lock_vnode()
813 vp = fs->object->handle; in vm_fault_lock_vnode()
814 if (vp == fs->vp) { in vm_fault_lock_vnode()
823 vm_fault_unlock_vp(fs); in vm_fault_lock_vnode()
837 fs->vp = vp; in vm_fault_lock_vnode()
843 vm_fault_unlock_and_deallocate(fs); in vm_fault_lock_vnode()
845 vm_fault_deallocate(fs); in vm_fault_lock_vnode()
848 fs->vp = vp; in vm_fault_lock_vnode()
859 vm_fault_readahead(struct faultstate *fs) in vm_fault_readahead() argument
864 KASSERT(fs->lookup_still_valid, ("map unlocked")); in vm_fault_readahead()
865 era = fs->entry->read_ahead; in vm_fault_readahead()
866 behavior = vm_map_entry_behavior(fs->entry); in vm_fault_readahead()
871 if (fs->vaddr == fs->entry->next_read) in vm_fault_readahead()
872 vm_fault_dontneed(fs, fs->vaddr, nera); in vm_fault_readahead()
873 } else if (fs->vaddr == fs->entry->next_read) { in vm_fault_readahead()
888 vm_fault_dontneed(fs, fs->vaddr, nera); in vm_fault_readahead()
900 fs->entry->read_ahead = nera; in vm_fault_readahead()
907 vm_fault_lookup(struct faultstate *fs) in vm_fault_lookup() argument
911 KASSERT(!fs->lookup_still_valid, in vm_fault_lookup()
913 result = vm_map_lookup(&fs->map, fs->vaddr, fs->fault_type | in vm_fault_lookup()
914 VM_PROT_FAULT_LOOKUP, &fs->entry, &fs->first_object, in vm_fault_lookup()
915 &fs->first_pindex, &fs->prot, &fs->wired); in vm_fault_lookup()
917 vm_fault_unlock_vp(fs); in vm_fault_lookup()
921 fs->map_generation = fs->map->timestamp; in vm_fault_lookup()
923 if (fs->entry->eflags & MAP_ENTRY_NOFAULT) { in vm_fault_lookup()
925 __func__, (u_long)fs->vaddr); in vm_fault_lookup()
928 if (fs->entry->eflags & MAP_ENTRY_IN_TRANSITION && in vm_fault_lookup()
929 fs->entry->wiring_thread != curthread) { in vm_fault_lookup()
930 vm_map_unlock_read(fs->map); in vm_fault_lookup()
931 vm_map_lock(fs->map); in vm_fault_lookup()
932 if (vm_map_lookup_entry(fs->map, fs->vaddr, &fs->entry) && in vm_fault_lookup()
933 (fs->entry->eflags & MAP_ENTRY_IN_TRANSITION)) { in vm_fault_lookup()
934 vm_fault_unlock_vp(fs); in vm_fault_lookup()
935 fs->entry->eflags |= MAP_ENTRY_NEEDS_WAKEUP; in vm_fault_lookup()
936 vm_map_unlock_and_wait(fs->map, 0); in vm_fault_lookup()
938 vm_map_unlock(fs->map); in vm_fault_lookup()
942 MPASS((fs->entry->eflags & MAP_ENTRY_GUARD) == 0); in vm_fault_lookup()
944 if (fs->wired) in vm_fault_lookup()
945 fs->fault_type = fs->prot | (fs->fault_type & VM_PROT_COPY); in vm_fault_lookup()
947 KASSERT((fs->fault_flags & VM_FAULT_WIRE) == 0, in vm_fault_lookup()
948 ("!fs->wired && VM_FAULT_WIRE")); in vm_fault_lookup()
949 fs->lookup_still_valid = true; in vm_fault_lookup()
955 vm_fault_relookup(struct faultstate *fs) in vm_fault_relookup() argument
962 if (!vm_map_trylock_read(fs->map)) in vm_fault_relookup()
965 fs->lookup_still_valid = true; in vm_fault_relookup()
966 if (fs->map->timestamp == fs->map_generation) in vm_fault_relookup()
969 result = vm_map_lookup_locked(&fs->map, fs->vaddr, fs->fault_type, in vm_fault_relookup()
970 &fs->entry, &retry_object, &retry_pindex, &retry_prot, in vm_fault_relookup()
971 &fs->wired); in vm_fault_relookup()
981 if (retry_object != fs->first_object || in vm_fault_relookup()
982 retry_pindex != fs->first_pindex) in vm_fault_relookup()
993 fs->prot &= retry_prot; in vm_fault_relookup()
994 fs->fault_type &= retry_prot; in vm_fault_relookup()
995 if (fs->prot == 0) in vm_fault_relookup()
999 KASSERT(fs->wired || (fs->fault_flags & VM_FAULT_WIRE) == 0, in vm_fault_relookup()
1006 vm_fault_cow(struct faultstate *fs) in vm_fault_cow() argument
1010 KASSERT(fs->object != fs->first_object, in vm_fault_cow()
1026 fs->object->shadow_count == 1 && fs->object->ref_count == 1 && in vm_fault_cow()
1030 fs->object->handle == NULL && (fs->object->flags & OBJ_ANON) != 0 && in vm_fault_cow()
1034 (is_first_object_locked = VM_OBJECT_TRYWLOCK(fs->first_object)) && in vm_fault_cow()
1035 fs->object == fs->first_object->backing_object && in vm_fault_cow()
1036 VM_OBJECT_TRYWLOCK(fs->object)) { in vm_fault_cow()
1038 * Remove but keep xbusy for replace. fs->m is moved into in vm_fault_cow()
1039 * fs->first_object and left busy while fs->first_m is in vm_fault_cow()
1042 vm_page_remove_xbusy(fs->m); in vm_fault_cow()
1043 vm_page_replace(fs->m, fs->first_object, fs->first_pindex, in vm_fault_cow()
1044 fs->first_m); in vm_fault_cow()
1045 vm_page_dirty(fs->m); in vm_fault_cow()
1050 vm_reserv_rename(fs->m, fs->first_object, fs->object, in vm_fault_cow()
1051 OFF_TO_IDX(fs->first_object->backing_object_offset)); in vm_fault_cow()
1053 VM_OBJECT_WUNLOCK(fs->object); in vm_fault_cow()
1054 VM_OBJECT_WUNLOCK(fs->first_object); in vm_fault_cow()
1055 fs->first_m = fs->m; in vm_fault_cow()
1056 fs->m = NULL; in vm_fault_cow()
1060 VM_OBJECT_WUNLOCK(fs->first_object); in vm_fault_cow()
1064 pmap_copy_page(fs->m, fs->first_m); in vm_fault_cow()
1065 if (fs->wired && (fs->fault_flags & VM_FAULT_WIRE) == 0) { in vm_fault_cow()
1066 vm_page_wire(fs->first_m); in vm_fault_cow()
1067 vm_page_unwire(fs->m, PQ_INACTIVE); in vm_fault_cow()
1074 fs->m_cow = fs->m; in vm_fault_cow()
1075 fs->m = NULL; in vm_fault_cow()
1094 vm_page_assert_xbusied(fs->m_cow); in vm_fault_cow()
1095 if ((fs->first_object->flags & OBJ_ONEMAPPING) == 0) in vm_fault_cow()
1096 pmap_remove_all(fs->m_cow); in vm_fault_cow()
1099 vm_object_pip_wakeup(fs->object); in vm_fault_cow()
1104 fs->object = fs->first_object; in vm_fault_cow()
1105 fs->pindex = fs->first_pindex; in vm_fault_cow()
1106 fs->m = fs->first_m; in vm_fault_cow()
1112 vm_fault_next(struct faultstate *fs) in vm_fault_next() argument
1116 if (fs->object == fs->first_object || !fs->can_read_lock) in vm_fault_next()
1117 VM_OBJECT_ASSERT_WLOCKED(fs->object); in vm_fault_next()
1119 VM_OBJECT_ASSERT_LOCKED(fs->object); in vm_fault_next()
1131 if (fs->object == fs->first_object) { in vm_fault_next()
1132 fs->first_m = fs->m; in vm_fault_next()
1133 fs->m = NULL; in vm_fault_next()
1134 } else if (fs->m != NULL) { in vm_fault_next()
1135 if (!vm_fault_object_ensure_wlocked(fs)) { in vm_fault_next()
1136 fs->can_read_lock = false; in vm_fault_next()
1137 vm_fault_unlock_and_deallocate(fs); in vm_fault_next()
1140 vm_fault_page_free(&fs->m); in vm_fault_next()
1147 next_object = fs->object->backing_object; in vm_fault_next()
1150 MPASS(fs->first_m != NULL); in vm_fault_next()
1151 KASSERT(fs->object != next_object, ("object loop %p", next_object)); in vm_fault_next()
1152 if (fs->can_read_lock) in vm_fault_next()
1157 if (fs->object != fs->first_object) in vm_fault_next()
1158 vm_object_pip_wakeup(fs->object); in vm_fault_next()
1159 fs->pindex += OFF_TO_IDX(fs->object->backing_object_offset); in vm_fault_next()
1160 VM_OBJECT_UNLOCK(fs->object); in vm_fault_next()
1161 fs->object = next_object; in vm_fault_next()
1167 vm_fault_zerofill(struct faultstate *fs) in vm_fault_zerofill() argument
1174 if (fs->object != fs->first_object) { in vm_fault_zerofill()
1175 vm_object_pip_wakeup(fs->object); in vm_fault_zerofill()
1176 fs->object = fs->first_object; in vm_fault_zerofill()
1177 fs->pindex = fs->first_pindex; in vm_fault_zerofill()
1179 MPASS(fs->first_m != NULL); in vm_fault_zerofill()
1180 MPASS(fs->m == NULL); in vm_fault_zerofill()
1181 fs->m = fs->first_m; in vm_fault_zerofill()
1182 fs->first_m = NULL; in vm_fault_zerofill()
1187 if ((fs->m->flags & PG_ZERO) == 0) { in vm_fault_zerofill()
1188 pmap_zero_page(fs->m); in vm_fault_zerofill()
1193 vm_page_valid(fs->m); in vm_fault_zerofill()
1201 vm_fault_allocate_oom(struct faultstate *fs) in vm_fault_allocate_oom() argument
1205 vm_fault_unlock_and_deallocate(fs); in vm_fault_allocate_oom()
1208 if (!fs->oom_started) { in vm_fault_allocate_oom()
1209 fs->oom_started = true; in vm_fault_allocate_oom()
1210 getmicrotime(&fs->oom_start_time); in vm_fault_allocate_oom()
1215 timevalsub(&now, &fs->oom_start_time); in vm_fault_allocate_oom()
1224 fs->oom_started = false; in vm_fault_allocate_oom()
1232 vm_fault_allocate(struct faultstate *fs, struct pctrie_iter *pages) in vm_fault_allocate() argument
1237 if ((fs->object->flags & OBJ_SIZEVNLOCK) != 0) { in vm_fault_allocate()
1238 res = vm_fault_lock_vnode(fs, true); in vm_fault_allocate()
1244 if (fs->pindex >= fs->object->size) { in vm_fault_allocate()
1245 vm_fault_unlock_and_deallocate(fs); in vm_fault_allocate()
1249 if (fs->object == fs->first_object && in vm_fault_allocate()
1250 (fs->first_object->flags & OBJ_POPULATE) != 0 && in vm_fault_allocate()
1251 fs->first_object->shadow_count == 0) { in vm_fault_allocate()
1252 res = vm_fault_populate(fs); in vm_fault_allocate()
1257 vm_fault_unlock_and_deallocate(fs); in vm_fault_allocate()
1283 dset = fs->object->domain.dr_policy; in vm_fault_allocate()
1288 vm_object_color(fs->object, atop(fs->vaddr) - fs->pindex); in vm_fault_allocate()
1290 if (!vm_pager_can_alloc_page(fs->object, fs->pindex)) { in vm_fault_allocate()
1291 vm_fault_unlock_and_deallocate(fs); in vm_fault_allocate()
1294 fs->m = vm_page_alloc_iter(fs->object, fs->pindex, in vm_fault_allocate()
1297 if (fs->m == NULL) { in vm_fault_allocate()
1298 if (vm_fault_allocate_oom(fs)) in vm_fault_allocate()
1302 fs->oom_started = false; in vm_fault_allocate()
1313 vm_fault_getpages(struct faultstate *fs, int *behindp, int *aheadp) in vm_fault_getpages() argument
1328 e_start = fs->entry->start; in vm_fault_getpages()
1329 e_end = fs->entry->end; in vm_fault_getpages()
1330 behavior = vm_map_entry_behavior(fs->entry); in vm_fault_getpages()
1343 if (fs->nera == -1 && !P_KILLED(curproc)) in vm_fault_getpages()
1344 fs->nera = vm_fault_readahead(fs); in vm_fault_getpages()
1352 vm_fault_unlock_map(fs); in vm_fault_getpages()
1354 status = vm_fault_lock_vnode(fs, false); in vm_fault_getpages()
1358 KASSERT(fs->vp == NULL || !vm_map_is_system(fs->map), in vm_fault_getpages()
1365 if (fs->nera == -1 || behavior == MAP_ENTRY_BEHAV_RANDOM || in vm_fault_getpages()
1371 if (fs->nera > 0) { in vm_fault_getpages()
1373 ahead = fs->nera; in vm_fault_getpages()
1385 cluster_offset = fs->pindex % VM_FAULT_READ_DEFAULT; in vm_fault_getpages()
1387 atop(fs->vaddr - e_start)); in vm_fault_getpages()
1390 ahead = ulmin(ahead, atop(e_end - fs->vaddr) - 1); in vm_fault_getpages()
1394 rv = vm_pager_get_pages(fs->object, &fs->m, 1, behindp, aheadp); in vm_fault_getpages()
1406 VM_OBJECT_WLOCK(fs->object); in vm_fault_getpages()
1407 vm_fault_page_free(&fs->m); in vm_fault_getpages()
1408 vm_fault_unlock_and_deallocate(fs); in vm_fault_getpages()
1430 vm_fault_busy_sleep(struct faultstate *fs) in vm_fault_busy_sleep() argument
1437 vm_page_aflag_set(fs->m, PGA_REFERENCED); in vm_fault_busy_sleep()
1438 if (fs->object != fs->first_object) { in vm_fault_busy_sleep()
1439 vm_fault_page_release(&fs->first_m); in vm_fault_busy_sleep()
1440 vm_object_pip_wakeup(fs->first_object); in vm_fault_busy_sleep()
1442 vm_object_pip_wakeup(fs->object); in vm_fault_busy_sleep()
1443 vm_fault_unlock_map(fs); in vm_fault_busy_sleep()
1444 if (!vm_page_busy_sleep(fs->m, "vmpfw", 0)) in vm_fault_busy_sleep()
1445 VM_OBJECT_UNLOCK(fs->object); in vm_fault_busy_sleep()
1447 vm_object_deallocate(fs->first_object); in vm_fault_busy_sleep()
1459 vm_fault_object(struct faultstate *fs, int *behindp, int *aheadp) in vm_fault_object() argument
1465 if (fs->object == fs->first_object || !fs->can_read_lock) in vm_fault_object()
1466 VM_OBJECT_ASSERT_WLOCKED(fs->object); in vm_fault_object()
1468 VM_OBJECT_ASSERT_LOCKED(fs->object); in vm_fault_object()
1475 if ((fs->object->flags & OBJ_DEAD) != 0) { in vm_fault_object()
1476 dead = fs->object->type == OBJT_DEAD; in vm_fault_object()
1477 vm_fault_unlock_and_deallocate(fs); in vm_fault_object()
1487 vm_page_iter_init(&pages, fs->object); in vm_fault_object()
1488 fs->m = vm_radix_iter_lookup(&pages, fs->pindex); in vm_fault_object()
1489 if (fs->m != NULL) { in vm_fault_object()
1490 if (!vm_page_tryxbusy(fs->m)) { in vm_fault_object()
1491 vm_fault_busy_sleep(fs); in vm_fault_object()
1500 if (vm_page_all_valid(fs->m)) { in vm_fault_object()
1501 VM_OBJECT_UNLOCK(fs->object); in vm_fault_object()
1511 if (fs->m == NULL && (vm_fault_object_needs_getpages(fs->object) || in vm_fault_object()
1512 fs->object == fs->first_object)) { in vm_fault_object()
1513 if (!vm_fault_object_ensure_wlocked(fs)) { in vm_fault_object()
1514 fs->can_read_lock = false; in vm_fault_object()
1515 vm_fault_unlock_and_deallocate(fs); in vm_fault_object()
1518 res = vm_fault_allocate(fs, &pages); in vm_fault_object()
1528 if (vm_fault_object_needs_getpages(fs->object)) { in vm_fault_object()
1539 VM_OBJECT_UNLOCK(fs->object); in vm_fault_object()
1540 res = vm_fault_getpages(fs, behindp, aheadp); in vm_fault_object()
1542 VM_OBJECT_WLOCK(fs->object); in vm_fault_object()
1554 struct faultstate fs; in vm_fault() local
1565 fs.vp = NULL; in vm_fault()
1566 fs.vaddr = vaddr; in vm_fault()
1567 fs.m_hold = m_hold; in vm_fault()
1568 fs.fault_flags = fault_flags; in vm_fault()
1569 fs.map = map; in vm_fault()
1570 fs.lookup_still_valid = false; in vm_fault()
1571 fs.oom_started = false; in vm_fault()
1572 fs.nera = -1; in vm_fault()
1573 fs.can_read_lock = true; in vm_fault()
1578 fs.fault_type = fault_type; in vm_fault()
1584 rv = vm_fault_lookup(&fs); in vm_fault()
1598 if (fs.vp == NULL /* avoid locked vnode leak */ && in vm_fault()
1599 (fs.entry->eflags & MAP_ENTRY_SPLIT_BOUNDARY_MASK) == 0 && in vm_fault()
1600 (fs.fault_flags & (VM_FAULT_WIRE | VM_FAULT_DIRTY)) == 0) { in vm_fault()
1601 res = vm_fault_soft_fast(&fs); in vm_fault()
1603 VM_OBJECT_ASSERT_UNLOCKED(fs.first_object); in vm_fault()
1606 VM_OBJECT_ASSERT_WLOCKED(fs.first_object); in vm_fault()
1608 vm_page_iter_init(&pages, fs.first_object); in vm_fault()
1609 VM_OBJECT_WLOCK(fs.first_object); in vm_fault()
1621 vm_object_reference_locked(fs.first_object); in vm_fault()
1622 vm_object_pip_add(fs.first_object, 1); in vm_fault()
1624 fs.m_cow = fs.m = fs.first_m = NULL; in vm_fault()
1629 fs.object = fs.first_object; in vm_fault()
1630 fs.pindex = fs.first_pindex; in vm_fault()
1632 if ((fs.entry->eflags & MAP_ENTRY_SPLIT_BOUNDARY_MASK) != 0) { in vm_fault()
1633 res = vm_fault_allocate(&fs, &pages); in vm_fault()
1651 KASSERT(fs.m == NULL, in vm_fault()
1652 ("page still set %p at loop start", fs.m)); in vm_fault()
1654 res = vm_fault_object(&fs, &behind, &ahead); in vm_fault()
1683 res_next = vm_fault_next(&fs); in vm_fault()
1689 if ((fs.fault_flags & VM_FAULT_NOFILL) != 0) { in vm_fault()
1690 if (fs.first_object == fs.object) in vm_fault()
1691 vm_fault_page_free(&fs.first_m); in vm_fault()
1692 vm_fault_unlock_and_deallocate(&fs); in vm_fault()
1695 VM_OBJECT_UNLOCK(fs.object); in vm_fault()
1696 vm_fault_zerofill(&fs); in vm_fault()
1707 vm_page_assert_xbusied(fs.m); in vm_fault()
1708 VM_OBJECT_ASSERT_UNLOCKED(fs.object); in vm_fault()
1715 if (fs.object != fs.first_object) { in vm_fault()
1719 if ((fs.fault_type & (VM_PROT_COPY | VM_PROT_WRITE)) != 0) { in vm_fault()
1720 vm_fault_cow(&fs); in vm_fault()
1731 fs.prot &= ~VM_PROT_WRITE; in vm_fault()
1739 if (!fs.lookup_still_valid) { in vm_fault()
1740 rv = vm_fault_relookup(&fs); in vm_fault()
1742 vm_fault_deallocate(&fs); in vm_fault()
1748 VM_OBJECT_ASSERT_UNLOCKED(fs.object); in vm_fault()
1757 fs.entry->next_read = vaddr + ptoa(ahead) + PAGE_SIZE; in vm_fault()
1766 if (fs.m_cow != NULL) { in vm_fault()
1767 KASSERT(vm_page_none_valid(fs.m), in vm_fault()
1768 ("vm_fault: page %p is already valid", fs.m_cow)); in vm_fault()
1769 vm_page_valid(fs.m); in vm_fault()
1776 vm_page_assert_xbusied(fs.m); in vm_fault()
1777 KASSERT(vm_page_all_valid(fs.m), in vm_fault()
1778 ("vm_fault: page %p partially invalid", fs.m)); in vm_fault()
1780 vm_fault_dirty(&fs, fs.m); in vm_fault()
1788 pmap_enter(fs.map->pmap, vaddr, fs.m, fs.prot, in vm_fault()
1789 fs.fault_type | (fs.wired ? PMAP_ENTER_WIRED : 0), 0); in vm_fault()
1790 if (faultcount != 1 && (fs.fault_flags & VM_FAULT_WIRE) == 0 && in vm_fault()
1791 fs.wired == 0) in vm_fault()
1792 vm_fault_prefault(&fs, vaddr, in vm_fault()
1800 if ((fs.fault_flags & VM_FAULT_WIRE) != 0) in vm_fault()
1801 vm_page_wire(fs.m); in vm_fault()
1803 vm_page_activate(fs.m); in vm_fault()
1804 if (fs.m_hold != NULL) { in vm_fault()
1805 (*fs.m_hold) = fs.m; in vm_fault()
1806 vm_page_wire(fs.m); in vm_fault()
1808 vm_page_xunbusy(fs.m); in vm_fault()
1809 fs.m = NULL; in vm_fault()
1814 vm_fault_deallocate(&fs); in vm_fault()
1819 if (racct_enable && fs.object->type == OBJT_VNODE) { in vm_fault()
1821 if ((fs.fault_type & (VM_PROT_COPY | VM_PROT_WRITE)) != 0) { in vm_fault()
1847 * When "fs->first_object" is a shadow object, the pages in the backing object
1852 vm_fault_dontneed(const struct faultstate *fs, vm_offset_t vaddr, int ahead) in vm_fault_dontneed() argument
1861 VM_OBJECT_ASSERT_UNLOCKED(fs->object); in vm_fault_dontneed()
1862 first_object = fs->first_object; in vm_fault_dontneed()
1871 (entry = fs->entry)->start < end) { in vm_fault_dontneed()
1876 pmap_advise(fs->map->pmap, start, end, MADV_DONTNEED); in vm_fault_dontneed()
1915 vm_fault_prefault(const struct faultstate *fs, vm_offset_t addra, in vm_fault_prefault() argument
1927 pmap = fs->map->pmap; in vm_fault_prefault()
1931 entry = fs->entry; in vm_fault_prefault()
1946 if ((fs->prot & VM_PROT_WRITE) != 0) in vm_fault_prefault()