vfs: export symbol d_find_any_alias()

Ceph needs this.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sage Weil <sage@newdream.net>
vfs: new helper - d_make_root()

d_alloc_root() with iput() in case of allocation failure...

Change-Id: I5996f7e1e53e68d5cdf2107da2c51d99147e3f63
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
f2fs: fixups for the 3.0 backport

Change-Id: Ieab4996db6d07ea7d94ca04f3c01442271ae6adb
config: tenderloin: enable f2fs

Change-Id: Ia6d1226981c9b3741288b7eba0e91483e5e655d6