Btrfs: return error code to caller when btrfs_del_item fails

The error code is returned instead of calling BUG_ON when
btrfs_del_item returns the error.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index a6a9d4e..6e7556a 100644 (file)
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -551,10 +551,10 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans,
                ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
                if (ret > 0) {
                        if (path->slots[0] == 0)
-                               goto out;
+                               break;
                        path->slots[0]--;
                } else if (ret < 0) {
-                       goto out;
+                       break;
                }
 
                leaf = path->nodes[0];
@@ -579,7 +579,8 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans,
                /* delete the entire item, it is inside our range */
                if (key.offset >= bytenr && csum_end <= end_byte) {
                        ret = btrfs_del_item(trans, root, path);
-                       BUG_ON(ret);
+                       if (ret)
+                               goto out;
                        if (key.offset == bytenr)
                                break;
                } else if (key.offset < bytenr && csum_end > end_byte) {
@@ -633,9 +634,10 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans,
                }
                btrfs_release_path(root, path);
        }
+       ret = 0;
 out:
        btrfs_free_path(path);
-       return 0;
+       return ret;
 }
 
 int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,

diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 6928bff..2cf5f51 100644 (file)
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -385,7 +385,10 @@ again:
                *sequence = btrfs_root_ref_sequence(leaf, ref);
 
                ret = btrfs_del_item(trans, tree_root, path);
-               BUG_ON(ret);
+               if (ret) {
+                       err = ret;
+                       goto out;
+               }
        } else
                err = -ENOENT;
 
@@ -397,6 +400,7 @@ again:
                goto again;
        }
 
+out:
        btrfs_free_path(path);
        return err;
 }

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index f997ec0..cf2baeb 100644 (file)
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -1050,7 +1050,8 @@ static noinline int fixup_inode_link_counts(struct btrfs_trans_handle *trans,
                        break;
 
                ret = btrfs_del_item(trans, root, path);
-               BUG_ON(ret);
+               if (ret)
+                       goto out;
 
                btrfs_release_path(root, path);
                inode = read_one_inode(root, key.offset);
@@ -1068,8 +1069,10 @@ static noinline int fixup_inode_link_counts(struct btrfs_trans_handle *trans,
                 */
                key.offset = (u64)-1;
        }
+       ret = 0;
+out:
        btrfs_release_path(root, path);
-       return 0;
+       return ret;
 }
 
 
@@ -2587,7 +2590,8 @@ static int drop_objectid_items(struct btrfs_trans_handle *trans,
                        break;
 
                ret = btrfs_del_item(trans, log, path);
-               BUG_ON(ret);
+               if (ret)
+                       break;
                btrfs_release_path(log, path);
        }
        btrfs_release_path(log, path);

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index e40cdd5..deca1a0 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -967,7 +967,6 @@ static int btrfs_free_dev_extent(struct btrfs_trans_handle *trans,
        if (device->bytes_used > 0)
                device->bytes_used -= btrfs_dev_extent_length(leaf, extent);
        ret = btrfs_del_item(trans, root, path);
-       BUG_ON(ret);
 
 out:
        btrfs_free_path(path);
@@ -1770,10 +1769,9 @@ static int btrfs_free_chunk(struct btrfs_trans_handle *trans,
        BUG_ON(ret);
 
        ret = btrfs_del_item(trans, root, path);
-       BUG_ON(ret);
 
        btrfs_free_path(path);
-       return 0;
+       return ret;
 }
 
 static int btrfs_del_sys_chunk(struct btrfs_root *root, u64 chunk_objectid, u64