[PATCH 5/7] md/raid10: replace wait loop with wait_event_idle()

[Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>]

The wait loop is equivalent to wait_event_idle() and can be simplified
by usaing it for improving readability.

Signed-off-by: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
---
 drivers/md/raid10.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 4bc1d5553ec7..7085fd97b98a 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1368,22 +1368,17 @@ static bool raid10_write_request(struct mddev *mddev, struct bio *bio,
 	     mddev->cluster_ops->area_resyncing(mddev, WRITE,
 						bio->bi_iter.bi_sector,
 						bio_end_sector(bio)))) {
-		DEFINE_WAIT(w);
 		/* Bail out if REQ_NOWAIT is set for the bio */
 		if (bio->bi_opf & REQ_NOWAIT) {
 			bio_wouldblock_error(bio);
 			free_r10bio(r10_bio);
 			return false;
 		}
-		for (;;) {
-			prepare_to_wait(&conf->wait_barrier,
-					&w, TASK_IDLE);
-			if (!mddev->cluster_ops->area_resyncing(mddev, WRITE,
-				 bio->bi_iter.bi_sector, bio_end_sector(bio)))
-				break;
-			schedule();
-		}
-		finish_wait(&conf->wait_barrier, &w);
+
+		wait_event_idle(conf->wait_barrier,
+				!mddev->cluster_ops->area_resyncing(mddev, WRITE,
+								    bio->bi_iter.bi_sector,
+								    bio_end_sector(bio)));
 	}
 
 	sectors = r10_bio->sectors;
-- 
2.43.0