Invalidate attributes on rename, since some filesystems may update
st_ctime.  Reported by Szabolcs Szakacsits
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>