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Fix a reference problem with maps. Only appears to manifest itself when

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sharing address spaces.
This commit is contained in:
John Dyson 1997-06-15 23:33:52 +00:00
parent c88fdb1d1d
commit dbc806e731
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=26667
1 changed files with 5 additions and 1 deletions
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6
sys/vm/vm_map.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_map.c,v 1.75 1997/04/07 07:16:05 peter Exp $
* $Id: vm_map.c,v 1.76 1997/04/13 01:48:35 dyson Exp $
*/
/*
@ -2454,8 +2454,12 @@ RetryLookup:;
if (lockmgr(&share_map->lock, LK_EXCLUPGRADE,
(void *)0, curproc)) {
vm_map_unlock_read(map);
if (share_map != map)
vm_map_unlock_read(map);
goto RetryLookup;
}
vm_object_shadow(