Fix this build error:
drivers/md/raid1.c: In function 'raid1_congested':
drivers/md/raid1.c:589: error: 'BDI_write_congested' undeclared
BDI_write_congested was changed in commit 1faa16d228 ("block: change the
request allocation/congestion logic to be sync/async based")
Signed-off-by: Alexander Beregalov <[email protected]>
Cc: Neil Brown <[email protected]>
Cc: Jens Axboe <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>