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Fix hangs on 'biolock' when creating a directory under / with softdep.

This commit is contained in:
ad 2008-01-09 18:20:54 +00:00
parent f5f76a59f0
commit dd68496f43
1 changed files with 17 additions and 4 deletions
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21
sys/ufs/ffs/ffs_vfsops.c
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@ -1,4 +1,4 @@
/* $NetBSD: ffs_vfsops.c,v 1.217 2008/01/07 16:56:27 ad Exp $ */
/* $NetBSD: ffs_vfsops.c,v 1.218 2008/01/09 18:20:54 ad Exp $ */
/*
* Copyright (c) 1989, 1991, 1993, 1994
@ -32,7 +32,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ffs_vfsops.c,v 1.217 2008/01/07 16:56:27 ad Exp $");
__KERNEL_RCSID(0, "$NetBSD: ffs_vfsops.c,v 1.218 2008/01/09 18:20:54 ad Exp $");
#if defined(_KERNEL_OPT)
#include "opt_ffs.h"
@ -189,7 +189,7 @@ ffs_mount(struct mount *mp, const char *path, void *data, size_t *data_len)
{
struct lwp *l = curlwp;
struct nameidata nd;
struct vnode *devvp = NULL;
struct vnode *vp, *devvp = NULL;
struct ufs_args *args = data;
struct ufsmount *ump = NULL;
struct fs *fs;
@ -259,8 +259,21 @@ ffs_mount(struct mount *mp, const char *path, void *data, size_t *data_len)
vref(devvp);
}
}
if ((mp->mnt_flag & MNT_SOFTDEP) != 0)
/*
* Mark the device and any existing vnodes as involved in
* softdep processing.
*/
if ((mp->mnt_flag & MNT_SOFTDEP) != 0) {
devvp->v_uflag |= VU_SOFTDEP;
mutex_enter(&mntvnode_lock);
TAILQ_FOREACH(vp, &mp->mnt_vnodelist, v_mntvnodes) {
if (vp->v_mount != mp || vismarker(vp))
continue;
vp->v_uflag |= VU_SOFTDEP;
}
mutex_exit(&mntvnode_lock);
}
/*
* If mount by non-root, then verify that user has necessary