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Fix the umount problems for DEVFS.

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PR:		3276 & 3469 (the fixes), 2738, 2033 (reports)
Submitted by:	Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
This commit is contained in:
Joerg Wunsch 1997-05-03 21:19:54 +00:00
parent a912e453bc
commit ce34628b4b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=25436
2 changed files with 17 additions and 4 deletions
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8
sys/miscfs/devfs/devfs_tree.c
View File

@ -2,7 +2,7 @@
/*
* Written by Julian Elischer (julian@DIALix.oz.au)
*
* $Header: /home/ncvs/src/sys/miscfs/devfs/devfs_tree.c,v 1.34 1997/02/12 16:19:04 mpp Exp $
* $Header: /home/ncvs/src/sys/miscfs/devfs/devfs_tree.c,v 1.35 1997/04/10 14:35:18 bde Exp $
*/
#include "opt_devfs.h"
@ -496,6 +496,12 @@ devfs_dn_free(dn_p dnp)
if(--dnp->links <= 0 ) /* can be -1 for initial free, on error */
{
/*probably need to do other cleanups XXX */
if (dnp->nextsibling != dnp) {
dn_p* prevp = dnp->prevsiblingp;
*prevp = dnp->nextsibling;
dnp->nextsibling->prevsiblingp = prevp;
}
if(dnp->type == DEV_SLNK) {
free(dnp->by.Slnk.name,M_DEVFSNODE);
}

13
sys/miscfs/devfs/devfs_vfsops.c
View File

@ -1,7 +1,7 @@
/*
* Written by Julian Elischer (julian@DIALix.oz.au)
*
* $Header: /home/ncvs/src/sys/miscfs/devfs/devfs_vfsops.c,v 1.15 1996/11/21 07:18:58 julian Exp $
* $Header: /home/ncvs/src/sys/miscfs/devfs/devfs_vfsops.c,v 1.16 1997/02/12 16:19:08 mpp Exp $
*
*
*/
@ -139,13 +139,20 @@ DBPRINT(("start "));
/*
* Unmount the filesystem described by mp.
* Note: vnodes from this FS may hang around if being used..
* This should not be a problem, they should be self contained.
*/
static int
devfs_unmount( struct mount *mp, int mntflags, struct proc *p)
{
struct devfsmount *devfs_mp_p = (struct devfsmount *)mp->mnt_data;
int flags = 0;
int error;
if (mntflags & MNT_FORCE) {
flags |= FORCECLOSE;
}
error = vflush(mp, NULLVP, flags);
if (error)
return error;
DBPRINT(("unmount "));
devfs_free_plane(devfs_mp_p);