[PATCH 0/4] xfs fixes for Linux 3.2-rc3

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

These are the patches that I think should still go into Linux 3.2.

The first two are fairly trivial fixes for crashes that can be reproduced
by users action or filesystem corruption.  The third is a a fix for the
hang reported by Simon, and although he hasn't tested the final variant
yet I'm fairly confident it should fix it given we use the same pattern
for dquots.  The last one is the biggest and fixes the log space hang
first reported by Alex and then debugged by Chandra.