提交 0f5053eb 编写于 作者: G Goldwyn Rodrigues 提交者: David Sterba

btrfs: parent_start initialization cleanup

Code cleanup. parent_start is initialized multiple times when it is
not necessary to do so.
Signed-off-by: NGoldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>
上级 6cea66e5
......@@ -1100,7 +1100,7 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
int level, ret;
int last_ref = 0;
int unlock_orig = 0;
u64 parent_start;
u64 parent_start = 0;
if (*cow_ret == buf)
unlock_orig = 1;
......@@ -1119,13 +1119,8 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
else
btrfs_node_key(buf, &disk_key, 0);
if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) {
if (parent)
parent_start = parent->start;
else
parent_start = 0;
} else
parent_start = 0;
if ((root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) && parent)
parent_start = parent->start;
cow = btrfs_alloc_tree_block(trans, root, parent_start,
root->root_key.objectid, &disk_key, level,
......@@ -1168,8 +1163,6 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID ||
btrfs_header_backref_rev(buf) < BTRFS_MIXED_BACKREF_REV)
parent_start = buf->start;
else
parent_start = 0;
extent_buffer_get(cow);
tree_mod_log_set_root_pointer(root, cow, 1);
......@@ -1180,11 +1173,6 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
free_extent_buffer(buf);
add_root_to_dirty_list(root);
} else {
if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID)
parent_start = parent->start;
else
parent_start = 0;
WARN_ON(trans->transid != btrfs_header_generation(parent));
tree_mod_log_insert_key(root->fs_info, parent, parent_slot,
MOD_LOG_KEY_REPLACE, GFP_NOFS);
......
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