From 6a684ecf05fc7da0e405e81cd2b425d7436d1ee4 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Sun, 28 Jul 2002 19:01:38 +0000 Subject: [PATCH] o Lock page queue accesses by vm_page_free(). --- sys/vm/vm_object.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c index 25c53ec7e4f3..9dd3df7027db 100644 --- a/sys/vm/vm_object.c +++ b/sys/vm/vm_object.c @@ -1435,8 +1435,10 @@ vm_object_backing_scan(vm_object_t object, int op) * Page is out of the parent object's range, we * can simply destroy it. */ + vm_page_lock_queues(); vm_page_protect(p, VM_PROT_NONE); vm_page_free(p); + vm_page_unlock_queues(); p = next; continue; } @@ -1453,8 +1455,10 @@ vm_object_backing_scan(vm_object_t object, int op) * * Leave the parent's page alone */ + vm_page_lock_queues(); vm_page_protect(p, VM_PROT_NONE); vm_page_free(p); + vm_page_unlock_queues(); p = next; continue; } @@ -1756,10 +1760,11 @@ again: if (p->valid & p->dirty) continue; } - + vm_page_lock_queues(); vm_page_busy(p); vm_page_protect(p, VM_PROT_NONE); vm_page_free(p); + vm_page_unlock_queues(); } } } else { @@ -1790,10 +1795,11 @@ again: continue; } } - + vm_page_lock_queues(); vm_page_busy(p); vm_page_protect(p, VM_PROT_NONE); vm_page_free(p); + vm_page_unlock_queues(); } start += 1; size -= 1;