[PATCH 5.15 021/230] btrfs: add additional parameters to btrfs_init_tree_ref/btrfs_init_data_ref

Greg Kroah-Hartman
2022-07-11T09:40:03Z

From: Nikolay Borisov <nborisov@suse.com>

[ Upstream commit f42c5da6c12e990d8ec415199600b4d593c63bf5 ]

In order to make 'real_root' used only in ref-verify it's required to
have the necessary context to perform the same checks that this member
is used for. So add 'mod_root' which will contain the root on behalf of
which a delayed ref was created and a 'skip_group' parameter which
will contain callsite-specific override of skip_qgroup.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/delayed-ref.h | 5 +++--
fs/btrfs/extent-tree.c | 17 +++++++++++------
fs/btrfs/file.c | 13 ++++++++-----
fs/btrfs/inode.c | 3 ++-
fs/btrfs/relocation.c | 21 ++++++++++++++-------
fs/btrfs/tree-log.c | 2 +-
6 files changed, 39 insertions(+), 22 deletions(-)

diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index e22fba272e4f..31266ba1d430 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -271,7 +271,7 @@ static inline void btrfs_init_generic_ref(struct btrfs_ref *generic_ref,
}

static inline void btrfs_init_tree_ref(struct btrfs_ref *generic_ref,
- int level, u64 root)
+ int level, u64 root, u64 mod_root, bool skip_qgroup)
{
/* If @real_root not set, use @root as fallback */
if (!generic_ref->real_root)
@@ -282,7 +282,8 @@ static inline void btrfs_init_tree_ref(struct btrfs_ref *generic_ref,
}

static inline void btrfs_init_data_ref(struct btrfs_ref *generic_ref,
- u64 ref_root, u64 ino, u64 offset)
+ u64 ref_root, u64 ino, u64 offset, u64 mod_root,
+ bool skip_qgroup)
{
/* If @real_root not set, use @root as fallback */
if (!generic_ref->real_root)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 514adc83577f..e01b9344fb9c 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2440,7 +2440,8 @@ static int __btrfs_mod_ref(struct btrfs_trans_handle *trans,
num_bytes, parent);
generic_ref.real_root = root->root_key.objectid;
btrfs_init_data_ref(&generic_ref, ref_root, key.objectid,
- key.offset);
+ key.offset, root->root_key.objectid,
+ for_reloc);
generic_ref.skip_qgroup = for_reloc;
if (inc)
ret = btrfs_inc_extent_ref(trans, &generic_ref);
@@ -2454,7 +2455,8 @@ static int __btrfs_mod_ref(struct btrfs_trans_handle *trans,
btrfs_init_generic_ref(&generic_ref, action, bytenr,
num_bytes, parent);
generic_ref.real_root = root->root_key.objectid;
- btrfs_init_tree_ref(&generic_ref, level - 1, ref_root);
+ btrfs_init_tree_ref(&generic_ref, level - 1, ref_root,
+ root->root_key.objectid, for_reloc);
generic_ref.skip_qgroup = for_reloc;
if (inc)
ret = btrfs_inc_extent_ref(trans, &generic_ref);
@@ -3289,7 +3291,7 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
btrfs_init_generic_ref(&generic_ref, BTRFS_DROP_DELAYED_REF,
buf->start, buf->len, parent);
btrfs_init_tree_ref(&generic_ref, btrfs_header_level(buf),
- root->root_key.objectid);
+ root->root_key.objectid, 0, false);

if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {
btrfs_ref_tree_mod(fs_info, &generic_ref);
@@ -4705,7 +4707,8 @@ int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans,

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_init_data_ref(&generic_ref, root->root_key.objectid, owner,
+ offset, 0, false);
btrfs_ref_tree_mod(root->fs_info, &generic_ref);

return btrfs_add_delayed_data_ref(trans, &generic_ref, ram_bytes);
@@ -4898,7 +4901,8 @@ struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
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_init_tree_ref(&generic_ref, level, root_objectid,
+ root->root_key.objectid, false);
btrfs_ref_tree_mod(fs_info, &generic_ref);
ret = btrfs_add_delayed_tree_ref(trans, &generic_ref, extent_op);
if (ret)
@@ -5315,7 +5319,8 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,

btrfs_init_generic_ref(&ref, BTRFS_DROP_DELAYED_REF, bytenr,
fs_info->nodesize, parent);
- btrfs_init_tree_ref(&ref, level - 1, root->root_key.objectid);
+ btrfs_init_tree_ref(&ref, level - 1, root->root_key.objectid,
+ 0, false);
ret = btrfs_free_extent(trans, &ref);
if (ret)
goto out_unlock;
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index a06c8366a8f4..1c597cd6c024 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -869,7 +869,8 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans,
btrfs_init_data_ref(&ref,
root->root_key.objectid,
new_key.objectid,
- args->start - extent_offset);
+ args->start - extent_offset,
+ 0, false);
ret = btrfs_inc_extent_ref(trans, &ref);
BUG_ON(ret); /* -ENOMEM */
}
@@ -955,7 +956,8 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans,
btrfs_init_data_ref(&ref,
root->root_key.objectid,
key.objectid,
- key.offset - extent_offset);
+ key.offset - extent_offset, 0,
+ false);
ret = btrfs_free_extent(trans, &ref);
BUG_ON(ret); /* -ENOMEM */
args->bytes_found += extent_end - key.offset;
@@ -1232,7 +1234,7 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
btrfs_init_generic_ref(&ref, BTRFS_ADD_DELAYED_REF, bytenr,
num_bytes, 0);
btrfs_init_data_ref(&ref, root->root_key.objectid, ino,
- orig_offset);
+ orig_offset, 0, false);
ret = btrfs_inc_extent_ref(trans, &ref);
if (ret) {
btrfs_abort_transaction(trans, ret);
@@ -1257,7 +1259,8 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
other_end = 0;
btrfs_init_generic_ref(&ref, BTRFS_DROP_DELAYED_REF, bytenr,
num_bytes, 0);
- btrfs_init_data_ref(&ref, root->root_key.objectid, ino, orig_offset);
+ btrfs_init_data_ref(&ref, root->root_key.objectid, ino, orig_offset,
+ 0, false);
if (extent_mergeable(leaf, path->slots[0] + 1,
ino, bytenr, orig_offset,
&other_start, &other_end)) {
@@ -2715,7 +2718,7 @@ static int btrfs_insert_replace_extent(struct btrfs_trans_handle *trans,
extent_info->disk_len, 0);
ref_offset = extent_info->file_offset - extent_info->data_offset;
btrfs_init_data_ref(&ref, root->root_key.objectid,
- btrfs_ino(inode), ref_offset);
+ btrfs_ino(inode), ref_offset, 0, false);
ret = btrfs_inc_extent_ref(trans, &ref);
}

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 044d584c3467..d644dcaf3004 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4919,7 +4919,8 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
extent_start, extent_num_bytes, 0);
ref.real_root = root->root_key.objectid;
btrfs_init_data_ref(&ref, btrfs_header_owner(leaf),
- ino, extent_offset);
+ ino, extent_offset,
+ root->root_key.objectid, false);
ret = btrfs_free_extent(trans, &ref);
if (ret) {
btrfs_abort_transaction(trans, ret);
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index a6661f2ad2c0..0300770c0a89 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1147,7 +1147,8 @@ int replace_file_extents(struct btrfs_trans_handle *trans,
num_bytes, parent);
ref.real_root = root->root_key.objectid;
btrfs_init_data_ref(&ref, btrfs_header_owner(leaf),
- key.objectid, key.offset);
+ key.objectid, key.offset,
+ root->root_key.objectid, false);
ret = btrfs_inc_extent_ref(trans, &ref);
if (ret) {
btrfs_abort_transaction(trans, ret);
@@ -1158,7 +1159,8 @@ int replace_file_extents(struct btrfs_trans_handle *trans,
num_bytes, parent);
ref.real_root = root->root_key.objectid;
btrfs_init_data_ref(&ref, btrfs_header_owner(leaf),
- key.objectid, key.offset);
+ key.objectid, key.offset,
+ root->root_key.objectid, false);
ret = btrfs_free_extent(trans, &ref);
if (ret) {
btrfs_abort_transaction(trans, ret);
@@ -1368,7 +1370,8 @@ int replace_path(struct btrfs_trans_handle *trans, struct reloc_control *rc,
btrfs_init_generic_ref(&ref, BTRFS_ADD_DELAYED_REF, old_bytenr,
blocksize, path->nodes[level]->start);
ref.skip_qgroup = true;
- btrfs_init_tree_ref(&ref, level - 1, src->root_key.objectid);
+ btrfs_init_tree_ref(&ref, level - 1, src->root_key.objectid,
+ 0, true);
ret = btrfs_inc_extent_ref(trans, &ref);
if (ret) {
btrfs_abort_transaction(trans, ret);
@@ -1377,7 +1380,8 @@ int replace_path(struct btrfs_trans_handle *trans, struct reloc_control *rc,
btrfs_init_generic_ref(&ref, BTRFS_ADD_DELAYED_REF, new_bytenr,
blocksize, 0);
ref.skip_qgroup = true;
- btrfs_init_tree_ref(&ref, level - 1, dest->root_key.objectid);
+ btrfs_init_tree_ref(&ref, level - 1, dest->root_key.objectid, 0,
+ true);
ret = btrfs_inc_extent_ref(trans, &ref);
if (ret) {
btrfs_abort_transaction(trans, ret);
@@ -1386,7 +1390,8 @@ int replace_path(struct btrfs_trans_handle *trans, struct reloc_control *rc,

btrfs_init_generic_ref(&ref, BTRFS_DROP_DELAYED_REF, new_bytenr,
blocksize, path->nodes[level]->start);
- btrfs_init_tree_ref(&ref, level - 1, src->root_key.objectid);
+ btrfs_init_tree_ref(&ref, level - 1, src->root_key.objectid,
+ 0, true);
ref.skip_qgroup = true;
ret = btrfs_free_extent(trans, &ref);
if (ret) {
@@ -1396,7 +1401,8 @@ int replace_path(struct btrfs_trans_handle *trans, struct reloc_control *rc,

btrfs_init_generic_ref(&ref, BTRFS_DROP_DELAYED_REF, old_bytenr,
blocksize, 0);
- btrfs_init_tree_ref(&ref, level - 1, dest->root_key.objectid);
+ btrfs_init_tree_ref(&ref, level - 1, dest->root_key.objectid,
+ 0, true);
ref.skip_qgroup = true;
ret = btrfs_free_extent(trans, &ref);
if (ret) {
@@ -2475,7 +2481,8 @@ static int do_relocation(struct btrfs_trans_handle *trans,
upper->eb->start);
ref.real_root = root->root_key.objectid;
btrfs_init_tree_ref(&ref, node->level,
- btrfs_header_owner(upper->eb));
+ btrfs_header_owner(upper->eb),
+ root->root_key.objectid, false);
ret = btrfs_inc_extent_ref(trans, &ref);
if (!ret)
ret = btrfs_drop_subtree(trans, root, eb,
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 1221d8483d63..bed6811476b0 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -761,7 +761,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans,
ins.objectid, ins.offset, 0);
btrfs_init_data_ref(&ref,
root->root_key.objectid,
- key->objectid, offset);
+ key->objectid, offset, 0, false);
ret = btrfs_inc_extent_ref(trans, &ref);
if (ret)
goto out;
--
2.35.1