btrfs: Small cleanup for get index_srcdev loop

1: Adjust condition in loop to make less TAB
2: Move btrfs_put_bbio()'s line for combine, and makes logic clean.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 91bd948..7a769ca 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5379,35 +5379,33 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
                 * target drive.
                 */
                for (i = 0; i < tmp_num_stripes; i++) {
-                       if (tmp_bbio->stripes[i].dev->devid == srcdev_devid) {
-                               /*
-                                * In case of DUP, in order to keep it
-                                * simple, only add the mirror with the
-                                * lowest physical address
-                                */
-                               if (found &&
-                                   physical_of_found <=
-                                    tmp_bbio->stripes[i].physical)
-                                       continue;
-                               index_srcdev = i;
-                               found = 1;
-                               physical_of_found =
-                                       tmp_bbio->stripes[i].physical;
-                       }
+                       if (tmp_bbio->stripes[i].dev->devid != srcdev_devid)
+                               continue;
+
+                       /*
+                        * In case of DUP, in order to keep it simple, only add
+                        * the mirror with the lowest physical address
+                        */
+                       if (found &&
+                           physical_of_found <= tmp_bbio->stripes[i].physical)
+                               continue;
+
+                       index_srcdev = i;
+                       found = 1;
+                       physical_of_found = tmp_bbio->stripes[i].physical;
                }
 
-               if (found) {
-                       mirror_num = index_srcdev + 1;
-                       patch_the_first_stripe_for_dev_replace = 1;
-                       physical_to_patch_in_first_stripe = physical_of_found;
-               } else {
+               btrfs_put_bbio(tmp_bbio);
+
+               if (!found) {
                        WARN_ON(1);
                        ret = -EIO;
-                       btrfs_put_bbio(tmp_bbio);
                        goto out;
                }
 
-               btrfs_put_bbio(tmp_bbio);
+               mirror_num = index_srcdev + 1;
+               patch_the_first_stripe_for_dev_replace = 1;
+               physical_to_patch_in_first_stripe = physical_of_found;
        } else if (mirror_num > map->num_stripes) {
                mirror_num = 0;
        }