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Use make_dev_credf(MAKEDEV_REF) instead of make_dev() from snp clone handler.

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Drain clone events and cdev destruction from the module unload handler.

Debugging help and testing by:	Peter Holm
Approved by:	re (kensmith)
This commit is contained in:
Konstantin Belousov 2007-07-03 17:43:56 +00:00
parent 6f0281937b
commit 5977b8fee1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=171183
1 changed files with 4 additions and 3 deletions
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7
sys/dev/snp/snp.c
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@ -616,10 +616,9 @@ snp_clone(void *arg, struct ucred *cred, char *name, int namelen,
return;
i = clone_create(&snpclones, &snp_cdevsw, &u, dev, 0);
if (i)
*dev = make_dev(&snp_cdevsw, unit2minor(u),
UID_ROOT, GID_WHEEL, 0600, "snp%d", u);
*dev = make_dev_credf(MAKEDEV_REF, &snp_cdevsw, unit2minor(u),
NULL, UID_ROOT, GID_WHEEL, 0600, "snp%d", u);
if (*dev != NULL) {
dev_ref(*dev);
(*dev)->si_flags |= SI_CHEAPCLONE;
}
}
@ -640,7 +639,9 @@ snp_modevent(module_t mod, int type, void *data)
if (!LIST_EMPTY(&snp_sclist))
return (EBUSY);
EVENTHANDLER_DEREGISTER(dev_clone, eh_tag);
drain_dev_clone_events();
clone_cleanup(&snpclones);
destroy_dev_drain(&snp_cdevsw);
ldisc_deregister(snooplinedisc);
break;
default: