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Don't try to obtain an excluive lock on the vm map, since a deadlock might

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occur if the process owning the map is wiring pages.
This commit is contained in:
tegge 1997-11-14 22:57:46 +00:00
parent e51ee7cdf9
commit 5ba8a227e1
2 changed files with 6 additions and 6 deletions
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6
sys/fs/procfs/procfs_map.c
View File

@ -36,7 +36,7 @@
*
* @(#)procfs_status.c 8.3 (Berkeley) 2/17/94
*
* $Id: procfs_map.c,v 1.11 1997/03/24 11:24:41 bde Exp $
* $Id: procfs_map.c,v 1.12 1997/08/02 14:32:12 bde Exp $
*/
#include <sys/param.h>
@ -88,7 +88,7 @@ procfs_domap(curp, p, pfs, uio)
error = 0;
if (map != &curproc->p_vmspace->vm_map)
vm_map_lock(map);
vm_map_lock_read(map);
for (entry = map->header.next;
((uio->uio_resid > 0) && (entry != &map->header));
entry = entry->next) {
@ -160,7 +160,7 @@ case OBJT_DEVICE:
break;
}
if (map != &curproc->p_vmspace->vm_map)
vm_map_unlock(map);
vm_map_unlock_read(map);
return error;
}

6
sys/miscfs/procfs/procfs_map.c
View File

@ -36,7 +36,7 @@
*
* @(#)procfs_status.c 8.3 (Berkeley) 2/17/94
*
* $Id: procfs_map.c,v 1.11 1997/03/24 11:24:41 bde Exp $
* $Id: procfs_map.c,v 1.12 1997/08/02 14:32:12 bde Exp $
*/
#include <sys/param.h>
@ -88,7 +88,7 @@ procfs_domap(curp, p, pfs, uio)
error = 0;
if (map != &curproc->p_vmspace->vm_map)
vm_map_lock(map);
vm_map_lock_read(map);
for (entry = map->header.next;
((uio->uio_resid > 0) && (entry != &map->header));
entry = entry->next) {
@ -160,7 +160,7 @@ case OBJT_DEVICE:
break;
}
if (map != &curproc->p_vmspace->vm_map)
vm_map_unlock(map);
vm_map_unlock_read(map);
return error;
}