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Btrfs: fix memory leak in btrfs_quota_enable() 

We should free quota_root before returning from the error
handling code.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
This commit is contained in:
Tsutomu Itoh 2012-10-16 05:44:21 +00:00 committed by Chris Mason
parent d79e50433b
commit 5b7ff5b3c4
1 changed files with 13 additions and 4 deletions
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17
fs/btrfs/qgroup.c
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@ -790,8 +790,10 @@ int btrfs_quota_enable(struct btrfs_trans_handle *trans,
} }
path = btrfs_alloc_path(); path = btrfs_alloc_path();
if (!path) if (!path) {
return -ENOMEM; ret = -ENOMEM;
goto out_free_root;
}
key.objectid = 0; key.objectid = 0;
key.type = BTRFS_QGROUP_STATUS_KEY; key.type = BTRFS_QGROUP_STATUS_KEY;
@ -800,7 +802,7 @@ int btrfs_quota_enable(struct btrfs_trans_handle *trans,
ret = btrfs_insert_empty_item(trans, quota_root, path, &key, ret = btrfs_insert_empty_item(trans, quota_root, path, &key,
sizeof(*ptr)); sizeof(*ptr));
if (ret) if (ret)
goto out; goto out_free_path;
leaf = path->nodes[0]; leaf = path->nodes[0];
ptr = btrfs_item_ptr(leaf, path->slots[0], ptr = btrfs_item_ptr(leaf, path->slots[0],
@ -818,8 +820,15 @@ int btrfs_quota_enable(struct btrfs_trans_handle *trans,
fs_info->quota_root = quota_root; fs_info->quota_root = quota_root;
fs_info->pending_quota_state = 1; fs_info->pending_quota_state = 1;
spin_unlock(&fs_info->qgroup_lock); spin_unlock(&fs_info->qgroup_lock);
out: out_free_path:
btrfs_free_path(path); btrfs_free_path(path);
out_free_root:
if (ret) {
free_extent_buffer(quota_root->node);
free_extent_buffer(quota_root->commit_root);
kfree(quota_root);
}
out:
return ret; return ret;
} }