On 22 Nov 2020, Darrick J. Wong stated: > On Sun, Nov 22, 2020 at 06:38:28PM +0000, Nick Alcock wrote: >> So I just tried to reboot my x86 server box from 5.9.6 to 5.9.10 and my > > Sorry about that, there was a bad patch in -rc4 that got sucked into > 5.9.9 because it had a fixes tag. The revert is already upstream: > > https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/?id=eb8409071a1d47e3593cfe077107ac46853182ab Thanks! Will give it a try soon :) (Solved in a couple of hours on a Sunday and all I had to do was mail off a photo. As I always say about free software, especially while feeling guilty about my own response times... you can't pay for service like this!) ... and no I don't know why I didn't think to check the master branch for obvious related reversions in fs/xfs. I'll do that next time before bothering other people.