Hi Jaegeuk, After merging the f2fs tree, today's linux-next build (x86_64 allmodconfig) failed like this: /home/sfr/next/next/fs/f2fs/super.c: In function 'f2fs_fill_super': /home/sfr/next/next/fs/f2fs/super.c:2563:18: error: 'SB_I_CGROUPWB' undeclared (first use in this function); did you mean 'S_CGROUPWB'? sb->s_iflags |= SB_I_CGROUPWB; ^~~~~~~~~~~~~ S_CGROUPWB Caused by commit 578c647879f7 ("f2fs: implement cgroup writeback support") interacting with commit 34934189a3dd ("cgroup, writeback: replace SB_I_CGROUPWB with per-inode S_CGROUPWB" from the btrfs tree. I have reverted the f2fs tree commit for today, but a better resolution would be appreciated. -- Cheers, Stephen Rothwell -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html