VT locking patch #2

[Benjamin Herrenschmidt]

Hi Andrew !

Here's a new version of the patch, against 2.6.1 bk.

I went more in depth into some of the calls in vt_ioctl and I think
fixed a few more races along with a possible false-positive. I added
the check for oops in progress too.

There are matching bits that have to go to fbdev as well, they'll be
part of the fbdev merge.

James: Do no include this patch with your big fbdev patches please,
it makes things more confusing. I'll send you separately the patches
to apply to fbdev to add locking in the right place.

Ben.


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