bcache: Make gc wakeup sane, remove set_task_state()

commit be628be09563f8f6e81929efbd7cf3f45c344416 upstream.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Coly Li <colyli@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 40ffe5e..a37c177 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -196,10 +196,8 @@
 	struct data_insert_op *op = container_of(cl, struct data_insert_op, cl);
 	struct bio *bio = op->bio, *n;
 
-	if (atomic_sub_return(bio_sectors(bio), &op->c->sectors_to_gc) < 0) {
-		set_gc_sectors(op->c);
+	if (atomic_sub_return(bio_sectors(bio), &op->c->sectors_to_gc) < 0)
 		wake_up_gc(op->c);
-	}
 
 	if (op->bypass)
 		return bch_data_invalidate(cl);