On Fri, Jul 22, 2016 at 11:13:41AM +0100, Build bot for Mark Brown wrote:
Today's -next fails to build an ARM allmodconfig due to:
arm-allmodconfig ERROR: "dax_do_io" [fs/xfs/xfs.ko] undefined!
due to 16d4d43595b47 (xfs: split direct I/O and DAX path) which added an unconditional reference to dax_do_io(). DAX is explicitly disabled on 32 bit ARM due to problems with virtual aliasing caches (it's not clear to me that it shouldn't also be disabled for arm64 for the same reason).