the call vm_page_seg_pull_cache_page() return an vm_page (src) with his
object being locked, as we don’t unlock before doing the vm_page_insert,
it is still lock there, and so trying to relock it cause a deadlock.
Replace this lock by an assert.
This case was not seen as for non-smp locking is a no-op.
---
vm/vm_page.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/vm/vm_page.c b/vm/vm_page.c
index 286fe62f..e329354f 100644
--- a/vm/vm_page.c
+++ b/vm/vm_page.c
@@ -1036,7 +1036,8 @@ vm_page_seg_balance_page(struct vm_page_seg *seg,
simple_unlock(&seg->lock);
simple_unlock(&vm_page_queue_free_lock);
- vm_object_lock(object);
+ // object is already locked as vm_page_seg_alloc_from_buddy return it
locked
+ assert(vm_object_lock_taken(src->object) != 0);
vm_page_insert(dest, object, offset);
vm_object_unlock(object);
--
2.47.0
