None of the callers of this function does actually take the BKL as far as I
can see.  So remove the comment refering to the BKL.
Signed-off-by: NAndi Kleen <ak@suse.de>
Cc: <linux-ext4@vger.kernel.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>