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Don't put objects that have no parent on the reverse_shadow_list. Problem

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identified and explained by Gene Stark (thanks Gene!).

Submitted by:	John Dyson
This commit is contained in:
David Greenman 1994-12-11 01:36:53 +00:00
parent 3339606d9a
commit 7b18a71899
1 changed files with 3 additions and 2 deletions
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5
sys/vm/vm_object.c
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@ -61,7 +61,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: vm_object.c,v 1.10 1994/11/06 05:07:50 davidg Exp $
* $Id: vm_object.c,v 1.11 1994/11/25 07:58:27 davidg Exp $
*/
/*
@ -985,7 +985,8 @@ vm_object_shadow(object, offset, length)
* count.
*/
result->shadow = source;
TAILQ_INSERT_TAIL(&result->shadow->reverse_shadow_head, result, reverse_shadow_list);
if (source)
TAILQ_INSERT_TAIL(&result->shadow->reverse_shadow_head, result, reverse_shadow_list);
/*
* Store the offset into the source object,