[PATCH 20/29] btrfs: btrfs_recover_relocation rename ret to ret2 and err to ret

[Anand Jain <anand.jain@oracle.com>]

Fix the code style for the return variable. First, rename ret to ret2,
compile it, and then rename err to ret. This method of changing helped
confirm that there are no instances of the old ret not renamed to ret2.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
 fs/btrfs/relocation.c | 64 +++++++++++++++++++++----------------------
 1 file changed, 32 insertions(+), 32 deletions(-)

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 6f8747c907d5..ab3d3d2ed853 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -4260,8 +4260,8 @@ int btrfs_recover_relocation(struct btrfs_fs_info *fs_info)
 	struct extent_buffer *leaf;
 	struct reloc_control *rc = NULL;
 	struct btrfs_trans_handle *trans;
-	int ret;
-	int err = 0;
+	int ret2;
+	int ret = 0;
 
 	path = btrfs_alloc_path();
 	if (!path)
@@ -4273,13 +4273,13 @@ int btrfs_recover_relocation(struct btrfs_fs_info *fs_info)
 	key.offset = (u64)-1;
 
 	while (1) {
-		ret = btrfs_search_slot(NULL, fs_info->tree_root, &key,
+		ret2 = btrfs_search_slot(NULL, fs_info->tree_root, &key,
 					path, 0, 0);
-		if (ret < 0) {
-			err = ret;
+		if (ret2 < 0) {
+			ret = ret2;
 			goto out;
 		}
-		if (ret > 0) {
+		if (ret2 > 0) {
 			if (path->slots[0] == 0)
 				break;
 			path->slots[0]--;
@@ -4294,7 +4294,7 @@ int btrfs_recover_relocation(struct btrfs_fs_info *fs_info)
 
 		reloc_root = btrfs_read_tree_root(fs_info->tree_root, &key);
 		if (IS_ERR(reloc_root)) {
-			err = PTR_ERR(reloc_root);
+			ret = PTR_ERR(reloc_root);
 			goto out;
 		}
 
@@ -4305,14 +4305,14 @@ int btrfs_recover_relocation(struct btrfs_fs_info *fs_info)
 			fs_root = btrfs_get_fs_root(fs_info,
 					reloc_root->root_key.offset, false);
 			if (IS_ERR(fs_root)) {
-				ret = PTR_ERR(fs_root);
-				if (ret != -ENOENT) {
-					err = ret;
+				ret2 = PTR_ERR(fs_root);
+				if (ret2 != -ENOENT) {
+					ret = ret2;
 					goto out;
 				}
-				ret = mark_garbage_root(reloc_root);
-				if (ret < 0) {
-					err = ret;
+				ret2 = mark_garbage_root(reloc_root);
+				if (ret2 < 0) {
+					ret = ret2;
 					goto out;
 				}
 			} else {
@@ -4332,13 +4332,13 @@ int btrfs_recover_relocation(struct btrfs_fs_info *fs_info)
 
 	rc = alloc_reloc_control(fs_info);
 	if (!rc) {
-		err = -ENOMEM;
+		ret = -ENOMEM;
 		goto out;
 	}
 
-	ret = reloc_chunk_start(fs_info);
-	if (ret < 0) {
-		err = ret;
+	ret2 = reloc_chunk_start(fs_info);
+	if (ret2 < 0) {
+		ret = ret2;
 		goto out_end;
 	}
 
@@ -4348,7 +4348,7 @@ int btrfs_recover_relocation(struct btrfs_fs_info *fs_info)
 
 	trans = btrfs_join_transaction(rc->extent_root);
 	if (IS_ERR(trans)) {
-		err = PTR_ERR(trans);
+		ret = PTR_ERR(trans);
 		goto out_unset;
 	}
 
@@ -4368,15 +4368,15 @@ int btrfs_recover_relocation(struct btrfs_fs_info *fs_info)
 		fs_root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset,
 					    false);
 		if (IS_ERR(fs_root)) {
-			err = PTR_ERR(fs_root);
+			ret = PTR_ERR(fs_root);
 			list_add_tail(&reloc_root->root_list, &reloc_roots);
 			btrfs_end_transaction(trans);
 			goto out_unset;
 		}
 
-		err = __add_reloc_root(reloc_root);
-		ASSERT(err != -EEXIST);
-		if (err) {
+		ret = __add_reloc_root(reloc_root);
+		ASSERT(ret != -EEXIST);
+		if (ret) {
 			list_add_tail(&reloc_root->root_list, &reloc_roots);
 			btrfs_put_root(fs_root);
 			btrfs_end_transaction(trans);
@@ -4386,8 +4386,8 @@ int btrfs_recover_relocation(struct btrfs_fs_info *fs_info)
 		btrfs_put_root(fs_root);
 	}
 
-	err = btrfs_commit_transaction(trans);
-	if (err)
+	ret = btrfs_commit_transaction(trans);
+	if (ret)
 		goto out_unset;
 
 	merge_reloc_roots(rc);
@@ -4396,14 +4396,14 @@ int btrfs_recover_relocation(struct btrfs_fs_info *fs_info)
 
 	trans = btrfs_join_transaction(rc->extent_root);
 	if (IS_ERR(trans)) {
-		err = PTR_ERR(trans);
+		ret = PTR_ERR(trans);
 		goto out_clean;
 	}
-	err = btrfs_commit_transaction(trans);
+	ret = btrfs_commit_transaction(trans);
 out_clean:
-	ret = clean_dirty_subvols(rc);
-	if (ret < 0 && !err)
-		err = ret;
+	ret2 = clean_dirty_subvols(rc);
+	if (ret2 < 0 && !ret)
+		ret = ret2;
 out_unset:
 	unset_reloc_control(rc);
 out_end:
@@ -4414,14 +4414,14 @@ int btrfs_recover_relocation(struct btrfs_fs_info *fs_info)
 
 	btrfs_free_path(path);
 
-	if (err == 0) {
+	if (ret == 0) {
 		/* cleanup orphan inode in data relocation tree */
 		fs_root = btrfs_grab_root(fs_info->data_reloc_root);
 		ASSERT(fs_root);
-		err = btrfs_orphan_cleanup(fs_root);
+		ret = btrfs_orphan_cleanup(fs_root);
 		btrfs_put_root(fs_root);
 	}
-	return err;
+	return ret;
 }
 
 /*
-- 
2.38.1