btrfs: zoned: re-flow prepare_allocation_zoned()

Re-flow prepare allocation zoned to make it a bit more readable by
returning early and removing unnecessary indentations.

This patch does not change any functionality.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 24 insertions, 17 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 3b840a4fdf1c..1dcd69fe97ed 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4284,36 +4284,43 @@ static int prepare_allocation_zoned(struct btrfs_fs_info *fs_info,
 				    struct find_free_extent_ctl *ffe_ctl,
 				    struct btrfs_space_info *space_info)
 {
+	struct btrfs_block_group *block_group;
+
 	if (ffe_ctl->for_treelog) {
 		spin_lock(&fs_info->treelog_bg_lock);
 		if (fs_info->treelog_bg)
 			ffe_ctl->hint_byte = fs_info->treelog_bg;
 		spin_unlock(&fs_info->treelog_bg_lock);
-	} else if (ffe_ctl->for_data_reloc) {
+		return 0;
+	}
+
+	if (ffe_ctl->for_data_reloc) {
 		spin_lock(&fs_info->relocation_bg_lock);
 		if (fs_info->data_reloc_bg)
 			ffe_ctl->hint_byte = fs_info->data_reloc_bg;
 		spin_unlock(&fs_info->relocation_bg_lock);
-	} else if (ffe_ctl->flags & BTRFS_BLOCK_GROUP_DATA) {
-		struct btrfs_block_group *block_group;
+		return 0;
+	}
 
-		spin_lock(&fs_info->zone_active_bgs_lock);
-		list_for_each_entry(block_group, &fs_info->zone_active_bgs, active_bg_list) {
-			/*
-			 * No lock is OK here because avail is monotonically
-			 * decreasing, and this is just a hint.
-			 */
-			u64 avail = block_group->zone_capacity - block_group->alloc_offset;
+	if (!(ffe_ctl->flags & BTRFS_BLOCK_GROUP_DATA))
+		return 0;
 
-			if (block_group_bits(block_group, ffe_ctl->flags) &&
-			    block_group->space_info == space_info &&
-			    avail >= ffe_ctl->num_bytes) {
-				ffe_ctl->hint_byte = block_group->start;
-				break;
-			}
+	spin_lock(&fs_info->zone_active_bgs_lock);
+	list_for_each_entry(block_group, &fs_info->zone_active_bgs, active_bg_list) {
+		/*
+		 * No lock is OK here because avail is monotonically
+		 * decreasing, and this is just a hint.
+		 */
+		u64 avail = block_group->zone_capacity - block_group->alloc_offset;
+
+		if (block_group_bits(block_group, ffe_ctl->flags) &&
+		    block_group->space_info == space_info &&
+		    avail >= ffe_ctl->num_bytes) {
+			ffe_ctl->hint_byte = block_group->start;
+			break;
 		}
-		spin_unlock(&fs_info->zone_active_bgs_lock);
 	}
+	spin_unlock(&fs_info->zone_active_bgs_lock);
 
 	return 0;
 }