bcache: style fixes for lines over 80 characters

This patch fixes the lines over 80 characters into more lines, to minimize
warnings by checkpatch.pl. There are still some lines exceed 80 characters,
but it is better to be a single line and I don't change them.

Signed-off-by: Coly Li <[email protected]>
Reviewed-by: Shenghui Wang <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index 0bd505c..031a75a 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -614,8 +614,8 @@ struct cache_set {
 	uint16_t		min_prio;
 
 	/*
-	 * max(gen - last_gc) for all buckets. When it gets too big we have to gc
-	 * to keep gens from wrapping around.
+	 * max(gen - last_gc) for all buckets. When it gets too big we have to
+	 * gc to keep gens from wrapping around.
 	 */
 	uint8_t			need_gc;
 	struct gc_stat		gc_stats;