ffs_fsync: dirty

[Kirk McKusick]

> Date: Mon, 24 Feb 2014 16:56:37 -0500 (EST)
> From: Benjamin Kaduk <kaduk at MIT.EDU>
> To: mikej <mikej at mikej.com>
> Subject: Re: ffs_fsync: dirty
> Cc: freebsd-fs at freebsd.org
> 
> On Sun, 23 Feb 2014, mikej wrote:
> 
>> FreeBSD custom 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r261885: Fri Feb 14 
>> 08:51:48 EST 2014     mikej at custom:/usr/obj/usr/src/sys/GENERIC  amd64
>>
>> I get a bunch of these while running poudriere.
>>
>> ffs_fsync: dirty
>> 0xfffff808e200e3b0: tag ufs, type VDIR
>>    usecount 1, writecount 0, refcount 8 mountedhere 0
>>    flags (VI_ACTIVE)
>>    v_object 0xfffff8039e934300 ref 0 pages 38 cleanbuf 1 dirtybuf 4
>>    lock type ufs: EXCL by thread 0xfffff8021bf72920 (pid 48820, cpdup, tid 
>> 100292)
>>        ino 1527731, on dev mfid0p2
> 
> That is a potentially interesting violation caught by INVARIANTS.  I don't 
> think I have time to investigate right now, though.
> 
> -Ben

The above output is rather vexing, but its only bad effect is to waste
a bit of memory. Several of us (kib, jeff, and myself) have tried to
track it down without success. Hopefully we will get it sorted out before
too much longer. But other more pressing problems keep this one on the
back burner.

	Kirk McKusick