Hi Chris, After merging the btrfs tree, today's linux-next build (powerpc ppc64_defconfig) failed like this: fs/btrfs/disk-io.c:34:28: fatal error: asm/cpufeature.h: No such file or directory Caused by commit 2fcfff234500 ("Btrfs: do not async metadata csumming in certain situations"). Only x86 has asm/cupfeature.h I have dropped the btrfs tree for today. This is exactly why your tree should have been in linux-next some time ago ... :-( -- Cheers, Stephen Rothwell sfr@canb.auug.org.au