md: use mddev_suspend/resume instead of ->quiesce()

commit 9e1cc0a5 upstream.

mddev_suspend() is a more general interface than
calling ->quiesce() and is so more extensible.  A
future patch will make use of this.
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/md/md.c

@@ -4870,8 +4870,8 @@ suspend_lo_store(struct mddev *mddev, const char *buf, size_t len)
 		mddev->pers->quiesce(mddev, 2);
 	} else {
 		/* Expanding suspended region - need to wait */
-		mddev->pers->quiesce(mddev, 1);
-		mddev->pers->quiesce(mddev, 0);
+		mddev_suspend(mddev);
+		mddev_resume(mddev);
 	}
 	err = 0;
 unlock:
@@ -4914,8 +4914,8 @@ suspend_hi_store(struct mddev *mddev, const char *buf, size_t len)
 		mddev->pers->quiesce(mddev, 2);
 	} else {
 		/* Expanding suspended region - need to wait */
-		mddev->pers->quiesce(mddev, 1);
-		mddev->pers->quiesce(mddev, 0);
+		mddev_suspend(mddev);
+		mddev_resume(mddev);
 	}
 	err = 0;
 unlock:
@@ -6666,7 +6666,7 @@ static int set_bitmap_file(struct mddev *mddev, int fd)
 			struct bitmap *bitmap;
 
 			bitmap = bitmap_create(mddev, -1);
-			mddev->pers->quiesce(mddev, 1);
+			mddev_suspend(mddev);
 			if (!IS_ERR(bitmap)) {
 				mddev->bitmap = bitmap;
 				err = bitmap_load(mddev);
@@ -6676,11 +6676,11 @@ static int set_bitmap_file(struct mddev *mddev, int fd)
 				bitmap_destroy(mddev);
 				fd = -1;
 			}
-			mddev->pers->quiesce(mddev, 0);
+			mddev_resume(mddev);
 		} else if (fd < 0) {
-			mddev->pers->quiesce(mddev, 1);
+			mddev_suspend(mddev);
 			bitmap_destroy(mddev);
-			mddev->pers->quiesce(mddev, 0);
+			mddev_resume(mddev);
 		}
 	}
 	if (fd < 0) {
@@ -6966,7 +6966,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
 			mddev->bitmap_info.space =
 				mddev->bitmap_info.default_space;
 			bitmap = bitmap_create(mddev, -1);
-			mddev->pers->quiesce(mddev, 1);
+			mddev_suspend(mddev);
 			if (!IS_ERR(bitmap)) {
 				mddev->bitmap = bitmap;
 				rv = bitmap_load(mddev);
@@ -6974,7 +6974,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
 				rv = PTR_ERR(bitmap);
 			if (rv)
 				bitmap_destroy(mddev);
-			mddev->pers->quiesce(mddev, 0);
+			mddev_resume(mddev);
 		} else {
 			/* remove the bitmap */
 			if (!mddev->bitmap) {
@@ -6997,9 +6997,9 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
 				mddev->bitmap_info.nodes = 0;
 				md_cluster_ops->leave(mddev);
 			}
-			mddev->pers->quiesce(mddev, 1);
+			mddev_suspend(mddev);
 			bitmap_destroy(mddev);
-			mddev->pers->quiesce(mddev, 0);
+			mddev_resume(mddev);
 			mddev->bitmap_info.offset = 0;
 		}
 	}