On 03/29/13 14:42, Wang Shilong wrote:
> From: Wang Shilong <wangsl-f...@cn.fujitsu.com>
>
> Just remove the unnecessary check and assignment.
>
> Signed-off-by: Wang Shilong <wangsl-f...@cn.fujitsu.com>
> ---
> fs/btrfs/backref.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
> index 3ca413bb..e102b48 100644
> --- a/fs/btrfs/backref.c
> +++ b/fs/btrfs/backref.c
> @@ -1499,7 +1499,7 @@ int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
> if (ret)
> break;
> ULIST_ITER_INIT(&root_uiter);
> - while (!ret && (root_node = ulist_next(roots, &root_uiter))) {
> + while ((root_node = ulist_next(roots, &root_uiter))) {
It doesn't look unnecessary at all to me. ret is set in the loop and
only checked in the while condition.
> pr_debug("root %llu references leaf %llu, data list "
> "%#llx\n", root_node->val, ref_node->val,
> (long long)ref_node->aux);
> @@ -1510,7 +1510,6 @@ int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
> iterate, ctx);
> }
> ulist_free(roots);
> - roots = NULL;
roots gets freed again later on. If you don't set it to NULL, it will
result in a double free.
-Arne
> }
>
> free_leaf_list(refs);
>
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