Hi Josef,

FYI, kernel build failed on

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next.git master
head:   df147c57b7b79624c977ffc4c763018a5426e6d8
commit: b17d706f8458bd6a0f42d5de2f3b7dca26ea8029 [62/66] Btrfs: use vfree instead of kfree
config: s390-allmodconfig

All related error/warning messages:

fs/btrfs/backref.c: In function 'init_data_container':
fs/btrfs/backref.c:1586:2: error: implicit declaration of function 'vmalloc' [-Werror=implicit-function-declaration]
fs/btrfs/backref.c:1586:7: warning: assignment makes pointer from integer without a cast [enabled by default]
fs/btrfs/backref.c: In function 'free_ipath':
fs/btrfs/backref.c:1637:2: error: implicit declaration of function 'vfree' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors

vim +1637 fs/btrfs/backref.c
  1632	
  1633	void free_ipath(struct inode_fs_paths *ipath)
  1634	{
  1635		if (!ipath)
  1636			return;

1637		vfree(ipath->fspath);

  1638		kfree(ipath);
  1639	}

---
0-DAY kernel build testing backend         Open Source Technology Centre
Fengguang Wu, Yuanhan Liu                              Intel Corporation