diff options
| author | alc <alc@FreeBSD.org> | 2003-04-30 00:43:17 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2003-04-30 00:43:17 +0000 |
| commit | 668955a3c5893b64f588c8be729010bc97bd313e (patch) | |
| tree | 93e0ea77fa19141fa9473896598771ed60405411 | |
| parent | c3c465c42ca1283892f28dc8e0d5868737c72f56 (diff) | |
| download | FreeBSD-src-668955a3c5893b64f588c8be729010bc97bd313e.zip FreeBSD-src-668955a3c5893b64f588c8be729010bc97bd313e.tar.gz | |
Add vm_object locking to vmspace_swap_count().
| -rw-r--r-- | sys/vm/vm_map.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c index 8ea43b6..38fe0e2 100644 --- a/sys/vm/vm_map.c +++ b/sys/vm/vm_map.c @@ -363,15 +363,16 @@ vmspace_swap_count(struct vmspace *vmspace) vm_object_t object; if ((cur->eflags & MAP_ENTRY_IS_SUB_MAP) == 0 && - (object = cur->object.vm_object) != NULL && - object->type == OBJT_SWAP - ) { - int n = (cur->end - cur->start) / PAGE_SIZE; + (object = cur->object.vm_object) != NULL) { + VM_OBJECT_LOCK(object); + if (object->type == OBJT_SWAP && + object->un_pager.swp.swp_bcount != 0) { + int n = (cur->end - cur->start) / PAGE_SIZE; - if (object->un_pager.swp.swp_bcount) { count += object->un_pager.swp.swp_bcount * SWAP_META_PAGES * n / object->size + 1; } + VM_OBJECT_UNLOCK(object); } } return (count); |
