Use make_dev_credf(MAKEDEV_REF) instead of make_dev() from snp clone handler.
Drain clone events and cdev destruction from the module unload handler. Debugging help and testing by: Peter Holm Approved by: re (kensmith)
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5977b8fee1
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=171183
@ -616,10 +616,9 @@ snp_clone(void *arg, struct ucred *cred, char *name, int namelen,
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return;
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i = clone_create(&snpclones, &snp_cdevsw, &u, dev, 0);
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if (i)
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*dev = make_dev(&snp_cdevsw, unit2minor(u),
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UID_ROOT, GID_WHEEL, 0600, "snp%d", u);
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*dev = make_dev_credf(MAKEDEV_REF, &snp_cdevsw, unit2minor(u),
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NULL, UID_ROOT, GID_WHEEL, 0600, "snp%d", u);
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if (*dev != NULL) {
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dev_ref(*dev);
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(*dev)->si_flags |= SI_CHEAPCLONE;
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}
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}
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@ -640,7 +639,9 @@ snp_modevent(module_t mod, int type, void *data)
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if (!LIST_EMPTY(&snp_sclist))
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return (EBUSY);
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EVENTHANDLER_DEREGISTER(dev_clone, eh_tag);
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drain_dev_clone_events();
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clone_cleanup(&snpclones);
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destroy_dev_drain(&snp_cdevsw);
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ldisc_deregister(snooplinedisc);
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break;
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default:
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