diff options
author | julian <julian@FreeBSD.org> | 1999-03-12 00:44:03 +0000 |
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committer | julian <julian@FreeBSD.org> | 1999-03-12 00:44:03 +0000 |
commit | 4726cfcda9bf1e3d68640fb7dd5cc879b69cc5ab (patch) | |
tree | 9a4885b54f387e9aa2500d74a2fed4c8a1c9e1cd /sys/ufs | |
parent | 98732386971c5984171195f55cd5ff92729bb5f5 (diff) | |
download | FreeBSD-src-4726cfcda9bf1e3d68640fb7dd5cc879b69cc5ab.zip FreeBSD-src-4726cfcda9bf1e3d68640fb7dd5cc879b69cc5ab.tar.gz |
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>
Diffstat (limited to 'sys/ufs')
-rw-r--r-- | sys/ufs/mfs/mfs_vfsops.c | 14 |
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; |