Hi all, this small series adds cgroup writeback support to XFS. Unlike the previous iteration of the support a few years ago it also ensures that that trailing bios in an ioend inherit the right cgroup. It has been tested with the shared/011 xfstests test that was written to test this functionality in all file systems, and manually by Stefan Priebe. This work was funded by Profihost AG. Note that the first patch was also in my series to move the xfs writepage code to iomap.c and the second one will conflict with it. We'll need to sort out which series to merge first, but given how simple this one I would suggest to go for this one.
