logfs: get rid of magical inodes

ordering problems at ->kill_sb() time are solved by doing iput()
of these suckers in ->put_super()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --cc fs/logfs/inode.c
Simple merge

diff --cc fs/logfs/journal.c
Simple merge

diff --cc fs/logfs/logfs.h
Simple merge

diff --cc fs/logfs/readwrite.c
Simple merge

diff --cc fs/logfs/segment.c
Simple merge

diff --cc fs/logfs/super.c
Simple merge