md/raid10: simplify/reindent some loops.

When a loop ends with a large if, it can be neater to change the
if to invert the condition and just 'continue'.
Then the body of the if can be indented to a lower level.
Signed-off-by: NeilBrown <neilb@suse.de>

drivers/md/raid10.c

@@ -1533,8 +1533,10 @@ static void fix_read_error(conf_t *conf, mddev_t *mddev, r10bio_t *r10_bio)
 			sl--;
 			d = r10_bio->devs[sl].devnum;
 			rdev = rcu_dereference(conf->mirrors[d].rdev);
-			if (rdev &&
-			    test_bit(In_sync, &rdev->flags)) {
+			if (!rdev ||
+			    !test_bit(In_sync, &rdev->flags))
+				continue;
+
 			atomic_inc(&rdev->nr_pending);
 			rcu_read_unlock();
 			if (sync_page_io(rdev,
@@ -1560,18 +1562,19 @@ static void fix_read_error(conf_t *conf, mddev_t *mddev, r10bio_t *r10_bio)
 			rdev_dec_pending(rdev, mddev);
 			rcu_read_lock();
 		}
-		}
 		sl = start;
 		while (sl != r10_bio->read_slot) {
+			char b[BDEVNAME_SIZE];
 
 			if (sl==0)
 				sl = conf->copies;
 			sl--;
 			d = r10_bio->devs[sl].devnum;
 			rdev = rcu_dereference(conf->mirrors[d].rdev);
-			if (rdev &&
-			    test_bit(In_sync, &rdev->flags)) {
-				char b[BDEVNAME_SIZE];
+			if (!rdev ||
+			    !test_bit(In_sync, &rdev->flags))
+				continue;
+
 			atomic_inc(&rdev->nr_pending);
 			rcu_read_unlock();
 			if (sync_page_io(rdev,
@@ -1588,7 +1591,8 @@ static void fix_read_error(conf_t *conf, mddev_t *mddev, r10bio_t *r10_bio)
 				       (unsigned long long)(
 					       sect + rdev->data_offset),
 				       bdevname(rdev->bdev, b));
-					printk(KERN_NOTICE "md/raid10:%s: %s: failing drive\n",
+				printk(KERN_NOTICE "md/raid10:%s: %s: failing "
+				       "drive\n",
 				       mdname(mddev),
 				       bdevname(rdev->bdev, b));
 
@@ -1607,7 +1611,6 @@ static void fix_read_error(conf_t *conf, mddev_t *mddev, r10bio_t *r10_bio)
 			rdev_dec_pending(rdev, mddev);
 			rcu_read_lock();
 		}
-		}
 		rcu_read_unlock();
 
 		sectors -= s;