Hello,

this patch exports the clear_queue_congested()
and set_queue_congested() functions located in ll_rw_blk.c

The functions are renamed to blk_clear_queue_congested()
and blk_set_queue_congested().

(needed in the pktcdvd driver's bio write congestion control)

(have the bits set with set_queue_congested() any use?
seems they are never used by anyone....)

Signed-off-by: Thomas Maier <balagi@justmail.de>