fuse: Get rid of bdi_initialized

It is not needed anymore since bdi is initialized whenever superblock
exists.

CC: Miklos Szeredi <miklos@szeredi.hu>
CC: linux-fsdevel@vger.kernel.org
Suggested-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 78887f6..c2d7f3a 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -382,7 +382,7 @@
 			wake_up(&fc->blocked_waitq);
 
 		if (fc->num_background == fc->congestion_threshold &&
-		    fc->connected && fc->bdi_initialized) {
+		    fc->connected && fc->sb) {
 			clear_bdi_congested(fc->sb->s_bdi, BLK_RW_SYNC);
 			clear_bdi_congested(fc->sb->s_bdi, BLK_RW_ASYNC);
 		}
@@ -573,8 +573,7 @@
 	fc->num_background++;
 	if (fc->num_background == fc->max_background)
 		fc->blocked = 1;
-	if (fc->num_background == fc->congestion_threshold &&
-	    fc->bdi_initialized) {
+	if (fc->num_background == fc->congestion_threshold && fc->sb) {
 		set_bdi_congested(fc->sb->s_bdi, BLK_RW_SYNC);
 		set_bdi_congested(fc->sb->s_bdi, BLK_RW_ASYNC);
 	}