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Lock accesses to the vm_object's ref_count and resident_page_count.

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This commit is contained in:
Alan Cox 2003-05-01 03:10:38 +00:00
parent b05deb9bc1
commit ebba1b25f9
1 changed files with 9 additions and 5 deletions
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14
sys/kern/vfs_subr.c
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@ -829,11 +829,15 @@ vcanrecycle(struct vnode *vp, struct mount **vnmpp)
/*
* Don't recycle if we still have cached pages.
*/
if (VOP_GETVOBJECT(vp, &object) == 0 &&
(object->resident_page_count ||
object->ref_count)) {
error = EBUSY;
goto done;
if (VOP_GETVOBJECT(vp, &object) == 0) {
VM_OBJECT_LOCK(object);
if (object->resident_page_count ||
object->ref_count) {
VM_OBJECT_UNLOCK(object);
error = EBUSY;
goto done;
}
VM_OBJECT_UNLOCK(object);
}
if (LIST_FIRST(&vp->v_cache_src)) {
/*