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Use the reference-counted PHOLD()/PRELE() rather than P_NOSWAP.

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This commit is contained in:
Peter Wemm 1999-04-06 03:03:34 +00:00
parent 88b4f4ee55
commit af8ad83e5c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=45357
1 changed files with 3 additions and 3 deletions
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6
sys/kern/kern_fork.c
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@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)kern_fork.c 8.6 (Berkeley) 4/8/94
* $Id: kern_fork.c,v 1.55 1999/01/26 02:38:10 julian Exp $
* $Id: kern_fork.c,v 1.56 1999/03/02 00:28:08 julian Exp $
*/
#include "opt_ktrace.h"
@ -439,7 +439,7 @@ fork1(p1, flags)
* This begins the section where we must prevent the parent
* from being swapped.
*/
p1->p_flag |= P_NOSWAP;
PHOLD(p1);
/*
* Finish creating the child process. It will return via a different
@ -470,7 +470,7 @@ fork1(p1, flags)
/*
* Now can be swapped.
*/
p1->p_flag &= ~P_NOSWAP;
PRELE(p1);
/*
* Preserve synchronization semantics of vfork. If waiting for