[PATCH 4.19 21/23] btrfs: check return value of btrfs_commit_transaction in relocation

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From: Josef Bacik <josef@xxxxxxxxxxxxxx>

commit fb686c6824dd6294ca772b92424b8fba666e7d00 upstream.

There are a few places where we don't check the return value of
btrfs_commit_transaction in relocation.c.  Thankfully all these places
have straightforward error handling, so simply change all of the sites
at once.

Reviewed-by: Qu Wenruo <wqu@xxxxxxxx>
Signed-off-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Stefan Ghinea <stefan.ghinea@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 fs/btrfs/relocation.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2341,7 +2341,7 @@ again:
 	list_splice(&reloc_roots, &rc->reloc_roots);
 
 	if (!err)
-		btrfs_commit_transaction(trans);
+		err = btrfs_commit_transaction(trans);
 	else
 		btrfs_end_transaction(trans);
 	return err;
@@ -3930,8 +3930,7 @@ int prepare_to_relocate(struct reloc_con
 		 */
 		return PTR_ERR(trans);
 	}
-	btrfs_commit_transaction(trans);
-	return 0;
+	return btrfs_commit_transaction(trans);
 }
 
 static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
@@ -4097,7 +4096,9 @@ restart:
 		err = PTR_ERR(trans);
 		goto out_free;
 	}
-	btrfs_commit_transaction(trans);
+	ret = btrfs_commit_transaction(trans);
+	if (ret && !err)
+		err = ret;
 out_free:
 	btrfs_free_block_rsv(fs_info, rc->block_rsv);
 	btrfs_free_path(path);





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