Remove @trans in check_chunks_and_extents_lowmem().

After this patch, lowmem repair works again.

Signed-off-by: Su Yue <suy.f...@cn.fujitsu.com>
---
 check/mode-lowmem.c | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/check/mode-lowmem.c b/check/mode-lowmem.c
index 3e81fc16e564..24fb8f09a1f0 100644
--- a/check/mode-lowmem.c
+++ b/check/mode-lowmem.c
@@ -4933,7 +4933,6 @@ out:
  */
 int check_chunks_and_extents_lowmem(struct btrfs_fs_info *fs_info)
 {
-       struct btrfs_trans_handle *trans = NULL;
        struct btrfs_path path;
        struct btrfs_key old_key;
        struct btrfs_key key;
@@ -4945,14 +4944,6 @@ int check_chunks_and_extents_lowmem(struct btrfs_fs_info 
*fs_info)
 
        root = fs_info->fs_root;
 
-       if (repair) {
-               trans = btrfs_start_transaction(fs_info->extent_root, 1);
-               if (IS_ERR(trans)) {
-                       error("failed to start transaction before check");
-                       return PTR_ERR(trans);
-               }
-       }
-
        root1 = root->fs_info->chunk_root;
        ret = check_btrfs_root(root1, 0, 1);
        err |= ret;
@@ -5022,10 +5013,6 @@ out:
                        err &= ~BG_ACCOUNTING_ERROR;
        }
 
-       if (trans)
-               btrfs_commit_transaction(trans, root->fs_info->extent_root);
-
        btrfs_release_path(&path);
-
        return err;
 }
-- 
2.17.0



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