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The code really means to mask off the high bits, not assign 0xff.
Signed-off-by: Jens Axboe <axboe@suse.de>
Cc: Marcus Meissner <meissner@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>