On Thu, Jan 29, 2009 at 12:09:13PM -0500, John Baldwin wrote: > On Thursday 29 January 2009 11:47:15 am Edward Tomasz Napierala wrote: > > Author: trasz > > Date: Thu Jan 29 16:47:15 2009 > > New Revision: 187894 > > URL: http://svn.freebsd.org/changeset/base/187894 > > > > Log: > > Make sure the cdev doesn't go away while the filesystem is still mounted. > > Otherwise dev2udev() could return garbage. > > > > Reviewed by: kib > > Approved by: rwatson (mentor) > > Sponsored by: FreeBSD Foundation > > Is this applicable to all filesystems? I'm curious why the VREF() on the > vnode associated with the cdev entry (um_devvp) is not sufficient to prevent > this? I would have thought that the vnode would have held a reference on the > cdev.
The point of this commit is that devvp vnode may be reclaimed.
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