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btrfs: ref-verify: Use btrfs_ref to refactor btrfs_ref_tree_mod()

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It's a perfect match for btrfs_ref_tree_mod() to use btrfs_ref, as
btrfs_ref describes a metadata/data reference update comprehensively.

Now we have one less function use confusing owner/level trick.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo
2019-04-04 14:45:33 +08:00
committed by David Sterba
parent 76675593b6
commit 8a5040f7d9
3 changed files with 42 additions and 48 deletions
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27
fs/btrfs/extent-tree.c
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@@ -2054,9 +2054,6 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
BUG_ON(owner < BTRFS_FIRST_FREE_OBJECTID &&
root_objectid == BTRFS_TREE_LOG_OBJECTID);
btrfs_ref_tree_mod(root, bytenr, num_bytes, parent, root_objectid,
owner, offset, BTRFS_ADD_DELAYED_REF);
btrfs_init_generic_ref(&generic_ref, BTRFS_ADD_DELAYED_REF, bytenr,
num_bytes, parent);
generic_ref.real_root = root->root_key.objectid;
@@ -2070,6 +2067,8 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
&old_ref_mod, &new_ref_mod);
}
btrfs_ref_tree_mod(fs_info, &generic_ref);
if (ret == 0 && old_ref_mod < 0 && new_ref_mod >= 0) {
bool metadata = owner < BTRFS_FIRST_FREE_OBJECTID;
@@ -7188,10 +7187,7 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {
int old_ref_mod, new_ref_mod;
btrfs_ref_tree_mod(root, buf->start, buf->len, parent,
root->root_key.objectid,
btrfs_header_level(buf), 0,
BTRFS_DROP_DELAYED_REF);
btrfs_ref_tree_mod(fs_info, &generic_ref);
ret = btrfs_add_delayed_tree_ref(trans, &generic_ref, NULL,
&old_ref_mod, &new_ref_mod);
BUG_ON(ret); /* -ENOMEM */
@@ -7251,11 +7247,6 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans,
if (btrfs_is_testing(fs_info))
return 0;
if (root_objectid != BTRFS_TREE_LOG_OBJECTID)
btrfs_ref_tree_mod(root, bytenr, num_bytes, parent,
root_objectid, owner, offset,
BTRFS_DROP_DELAYED_REF);
btrfs_init_generic_ref(&generic_ref, BTRFS_DROP_DELAYED_REF, bytenr,
num_bytes, parent);
generic_ref.real_root = root->root_key.objectid;
@@ -7279,6 +7270,9 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans,
&old_ref_mod, &new_ref_mod);
}
if (root_objectid != BTRFS_TREE_LOG_OBJECTID)
btrfs_ref_tree_mod(fs_info, &generic_ref);
if (ret == 0 && old_ref_mod >= 0 && new_ref_mod < 0) {
bool metadata = owner < BTRFS_FIRST_FREE_OBJECTID;
@@ -8386,13 +8380,10 @@ int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
BUG_ON(root->root_key.objectid == BTRFS_TREE_LOG_OBJECTID);
btrfs_ref_tree_mod(root, ins->objectid, ins->offset, 0,
root->root_key.objectid, owner, offset,
BTRFS_ADD_DELAYED_EXTENT);
btrfs_init_generic_ref(&generic_ref, BTRFS_ADD_DELAYED_EXTENT,
ins->objectid, ins->offset, 0);
btrfs_init_data_ref(&generic_ref, root->root_key.objectid, owner, offset);
btrfs_ref_tree_mod(root->fs_info, &generic_ref);
ret = btrfs_add_delayed_data_ref(trans, &generic_ref,
ram_bytes, NULL, NULL);
return ret;
@@ -8641,13 +8632,11 @@ struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
extent_op->is_data = false;
extent_op->level = level;
btrfs_ref_tree_mod(root, ins.objectid, ins.offset, parent,
root_objectid, level, 0,
BTRFS_ADD_DELAYED_EXTENT);
btrfs_init_generic_ref(&generic_ref, BTRFS_ADD_DELAYED_EXTENT,
ins.objectid, ins.offset, parent);
generic_ref.real_root = root->root_key.objectid;
btrfs_init_tree_ref(&generic_ref, level, root_objectid);
btrfs_ref_tree_mod(fs_info, &generic_ref);
ret = btrfs_add_delayed_tree_ref(trans, &generic_ref,
extent_op, NULL, NULL);
if (ret)