overlayfs update for 4.2

Hi Linus,

Please pull from:

git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git overlayfs-next

This relaxes the requirements on the lower layer filesystem: now ones that implement .d_revalidate, such as NFS, can be used. Upper layer filesystems still has the "no .d_revalidate" requirement. Also a bad interaction with jffs2 locking has been fixed.

Thanks,
Miklos

---
Miklos Szeredi (3):
ovl: don't traverse automount points
ovl: allow distributed fs as lower layer
ovl: lookup whiteouts outside iterate_dir()

---
 fs/overlayfs/readdir.c |  77 +++++++++++++++++++++------------
 fs/overlayfs/super.c   | 113 +++++++++++++++++++++++++++++++++++++++----------
 2 files changed, 139 insertions(+), 51 deletions(-)