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fix previous, list ends in NULL, and don't open-code

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This commit is contained in:
christos 2013-11-23 23:34:04 +00:00
parent d2c05345c3
commit 2ff9a720d1
1 changed files with 8 additions and 7 deletions
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15
sys/compat/ultrix/ultrix_fs.c
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@ -1,4 +1,4 @@
/* $NetBSD: ultrix_fs.c,v 1.52 2013/11/23 16:15:25 riz Exp $ */
/* $NetBSD: ultrix_fs.c,v 1.53 2013/11/23 23:34:04 christos Exp $ */
/*
* Copyright (c) 1995, 1997 Jonathan Stone
@ -33,7 +33,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ultrix_fs.c,v 1.52 2013/11/23 16:15:25 riz Exp $");
__KERNEL_RCSID(0, "$NetBSD: ultrix_fs.c,v 1.53 2013/11/23 23:34:04 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -248,15 +248,16 @@ ultrix_sys_getmnt(struct lwp *l, const struct ultrix_sys_getmnt_args *uap, regis
sizeof(*SCARG(uap, start)))) != 0)
goto bad;
mutex_enter(&mountlist_lock);
for (skip = start, mp = mountlist.tqh_first;
mp != (void*)&mountlist && skip-- > 0; mp = nmp)
nmp = mp->mnt_list.tqe_next;
for (skip = start, mp = TAILQ_FIRST(&mountlist);
mp != TAILQ_END(&mountlist) && skip-- > 0;
mp = TAILQ_NEXT(mp, mnt_list))
continue;
mutex_exit(&mountlist_lock);
}
mutex_enter(&mountlist_lock);
for (count = 0, mp = mountlist.tqh_first;
mp != (void*)&mountlist && count < maxcount; mp = nmp) {
for (count = 0, mp = TAILQ_FIRST(&mountlist);
mp != TAILQ_END(&mountlist) && count < maxcount; mp = nmp) {
if (vfs_busy(mp, &nmp)) {
continue;
}