This is a debug entry that isn't of much use to the generic user or on a
production system. Additionally it can also easy overflow the sysfs
PAGE_SIZE limitation, if you have many processes doing io. So kill the
entry.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>