Stop the mfs from trying to swap out crucial bits of the mfs

as this can lead to deadlock.
Submitted by: Mat dillon <dillon@freebsd.org>

1 files changed, 7 insertions, 7 deletions

diff --git a/sys/ufs/mfs/mfs_vfsops.c b/sys/ufs/mfs/mfs_vfsops.c
index 2bbacd9..9e470f0 100644
--- a/sys/ufs/mfs/mfs_vfsops.c
+++ b/sys/ufs/mfs/mfs_vfsops.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)mfs_vfsops.c	8.11 (Berkeley) 6/19/95
- * $Id: mfs_vfsops.c,v 1.55 1999/01/21 09:24:46 dillon Exp $
+ * $Id: mfs_vfsops.c,v 1.56 1999/01/28 00:57:54 dillon Exp $
  */
 
 
@@ -396,13 +396,13 @@ mfs_start(mp, flags, p)
 	register int gotsig = 0;
 
 	/*
-	 * Must set P_SYSTEM to prevent system from trying to kill
-	 * this process.  What happens is that the process is unkillable,
-	 * and the swapper loops trying to continuously kill it.  Nor
-	 * can we swap out this process - not unless you want a deadlock,
-	 * anyway.
+	 * We must set P_NOSWAP to prevent the system from trying to swap
+	 * out or kill ( when swap space is low, see vm/pageout.c ) the
+	 * process.  A deadlock can occur if the process is swapped out,
+	 * and the system can loop trying to kill the unkillable ( while
+	 * references exist ) MFS process when swap space is low.
 	 */
-	curproc->p_flag |= P_SYSTEM;
+	curproc->p_flag |= P_NOSWAP;
 
 	while (mfsp->mfs_active) {
 		int s;