cvs commit: src/sys/kern vfs_subr.c

Marcel Moolenaar xcllnt at
Tue Mar 27 16:37:48 UTC 2007

On Mar 27, 2007, at 12:43 AM, Kris Kennaway wrote:

> On Tue, Mar 27, 2007 at 05:29:41AM +0000, Marcel Moolenaar wrote:
>> marcel      2007-03-27 05:29:41 UTC
>>   FreeBSD src repository
>>   Modified files:
>>     sys/kern             vfs_subr.c
>>   Log:
>>   PowerPC is the only architecture with mpsafe_vfs=0. This is now
>>   broken. Rudimentary tests show that PowerPC can run with
>>   mpsafe_vfs=1. Make it so...
> If this is the vget panic via soft updates then a fix is pending for
> that.  Nevertheless mpsafevfs=1 is a good thing :)

Maybe. I don't have the backtrace handy. It had to do with S/U, so it
probably is then. I didn't see it on my amd64 box, so I assumed it was
specific to PowerPC. Setting mpsave_vfs=1 solved it for me (or
should I say avoided it for me? :-) I figured it's better to hunt down
bugs in the mpsafe_vfs=1 case then it is in the mpsafe_vfs=0 case.
This is not to say that mpsafe_vfs=0 can be broken, but rather that
I prefer to work on improving the mpsafe_vfs=1 case...

Hmmm, maybe I don't have S/U on amd64 box (I don't bother to partition
my development boxes, so I typically only have a / mount that has S/U.
Everything is basically over NFS...)

Marcel Moolenaar
xcllnt at

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