btrfs_add_delayed_tree_ref() has a longer and longer parameter list, and
some caller like btrfs_inc_extent_ref() are using @owner as level for
delayed tree ref.
Instead of making the parameter list longer and longer, use btrfs_ref to
refactor it, so each parameter assignment should be self-explaining
without dirty level/owner trick, and provides the basis for later refactor.
Signed-off-by: Qu Wenruo <w...@suse.com>
---
fs/btrfs/delayed-ref.c | 24 ++++++++++++++-------
fs/btrfs/delayed-ref.h | 4 +---
fs/btrfs/extent-tree.c | 48 ++++++++++++++++++++++++------------------
3 files changed, 44 insertions(+), 32 deletions(-)
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index 11dd46be4017..c42b8ade7b07 100644
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -710,9 +710,7 @@ static void init_delayed_ref_common(struct btrfs_fs_info
*fs_info,
* transaction commits.
*/
int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle *trans,
- u64 bytenr, u64 num_bytes, u64 parent,
- u64 ref_root, int level, bool for_reloc,
- int action,
+ struct btrfs_ref *generic_ref,
struct btrfs_delayed_extent_op *extent_op,
int *old_ref_mod, int *new_ref_mod)
{
@@ -722,10 +720,17 @@ int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle
*trans,
struct btrfs_delayed_ref_root *delayed_refs;
struct btrfs_qgroup_extent_record *record = NULL;
int qrecord_inserted;
- bool is_system = (ref_root == BTRFS_CHUNK_TREE_OBJECTID);
+ bool is_system = (generic_ref->real_root == BTRFS_CHUNK_TREE_OBJECTID);
+ int action = generic_ref->action;
+ int level = generic_ref->tree_ref.level;
int ret;
+ u64 bytenr = generic_ref->bytenr;
+ u64 num_bytes = generic_ref->len;
+ u64 parent = generic_ref->parent;
u8 ref_type;
+ ASSERT(generic_ref && generic_ref->type == BTRFS_REF_METADATA &&
+ generic_ref->action);
BUG_ON(extent_op && extent_op->is_data);
ref = kmem_cache_alloc(btrfs_delayed_tree_ref_cachep, GFP_NOFS);
if (!ref)
@@ -738,7 +743,9 @@ int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle
*trans,
}
if (test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags) &&
- is_fstree(ref_root) && !for_reloc) {
+ is_fstree(generic_ref->real_root) &&
+ is_fstree(generic_ref->tree_ref.root) &&
+ !generic_ref->skip_qgroup) {
record = kzalloc(sizeof(*record), GFP_NOFS);
if (!record) {
kmem_cache_free(btrfs_delayed_tree_ref_cachep, ref);
@@ -753,13 +760,14 @@ int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle
*trans,
ref_type = BTRFS_TREE_BLOCK_REF_KEY;
init_delayed_ref_common(fs_info, &ref->node, bytenr, num_bytes,
- ref_root, action, ref_type);
- ref->root = ref_root;
+ generic_ref->tree_ref.root, action, ref_type);
+ ref->root = generic_ref->tree_ref.root;
ref->parent = parent;
ref->level = level;
init_delayed_ref_head(head_ref, record, bytenr, num_bytes,
- ref_root, 0, action, false, is_system);
+ generic_ref->tree_ref.root, 0, action, false,
+ is_system);
head_ref->extent_op = extent_op;
delayed_refs = &trans->transaction->delayed_refs;
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index e36d6b05d85e..dbe029c4e01b 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -333,9 +333,7 @@ static inline void btrfs_put_delayed_ref_head(struct
btrfs_delayed_ref_head *hea
}
int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle *trans,
- u64 bytenr, u64 num_bytes, u64 parent,
- u64 ref_root, int level, bool for_reloc,
- int action,
+ struct btrfs_ref *generic_ref,
struct btrfs_delayed_extent_op *extent_op,
int *old_ref_mod, int *new_ref_mod);
int btrfs_add_delayed_data_ref(struct btrfs_trans_handle *trans,
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index ea68d288d761..ecfa0234863b 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2031,6 +2031,7 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
bool for_reloc)
{
struct btrfs_fs_info *fs_info = root->fs_info;
+ struct btrfs_ref generic_ref = { 0 };
int old_ref_mod, new_ref_mod;
int ret;
@@ -2040,13 +2041,13 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle
*trans,
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, root->root_key.objectid, parent);
+ generic_ref.skip_qgroup = for_reloc;
if (owner < BTRFS_FIRST_FREE_OBJECTID) {
- ret = btrfs_add_delayed_tree_ref(trans, bytenr,
- num_bytes, parent,
- root_objectid, (int)owner,
- for_reloc,
- BTRFS_ADD_DELAYED_REF, NULL,
- &old_ref_mod, &new_ref_mod);
+ btrfs_init_tree_ref(&generic_ref, (int)owner, root_objectid);
+ ret = btrfs_add_delayed_tree_ref(trans, &generic_ref,
+ NULL, &old_ref_mod, &new_ref_mod);
} else {
ret = btrfs_add_delayed_data_ref(trans, root, bytenr,
num_bytes, parent,
@@ -7013,9 +7014,16 @@ void btrfs_free_tree_block(struct btrfs_trans_handle
*trans,
u64 parent, int last_ref)
{
struct btrfs_fs_info *fs_info = root->fs_info;
+ struct btrfs_ref generic_ref = { 0 };
int pin = 1;
int ret;
+ btrfs_init_generic_ref(&generic_ref, BTRFS_DROP_DELAYED_REF,
+ buf->start, buf->len, root->root_key.objectid,
+ parent);
+ btrfs_init_tree_ref(&generic_ref, btrfs_header_level(buf),
+ root->root_key.objectid);
+
if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {
int old_ref_mod, new_ref_mod;
@@ -7023,11 +7031,7 @@ void btrfs_free_tree_block(struct btrfs_trans_handle
*trans,
root->root_key.objectid,
btrfs_header_level(buf), 0,
BTRFS_DROP_DELAYED_REF);
- ret = btrfs_add_delayed_tree_ref(trans, buf->start,
- buf->len, parent,
- root->root_key.objectid,
- btrfs_header_level(buf), false,
- BTRFS_DROP_DELAYED_REF, NULL,
+ ret = btrfs_add_delayed_tree_ref(trans, &generic_ref, NULL,
&old_ref_mod, &new_ref_mod);
BUG_ON(ret); /* -ENOMEM */
pin = old_ref_mod >= 0 && new_ref_mod < 0;
@@ -7080,6 +7084,7 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans,
u64 owner, u64 offset, bool for_reloc)
{
struct btrfs_fs_info *fs_info = root->fs_info;
+ struct btrfs_ref generic_ref = { 0 };
int old_ref_mod, new_ref_mod;
int ret;
@@ -7091,6 +7096,9 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans,
root_objectid, owner, offset,
BTRFS_DROP_DELAYED_REF);
+ btrfs_init_generic_ref(&generic_ref, BTRFS_DROP_DELAYED_REF, bytenr,
+ num_bytes, root->root_key.objectid, parent);
+ generic_ref.skip_qgroup = for_reloc;
/*
* tree log blocks never actually go into the extent allocation
* tree, just update pinning info and exit early.
@@ -7102,11 +7110,8 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans,
old_ref_mod = new_ref_mod = 0;
ret = 0;
} else if (owner < BTRFS_FIRST_FREE_OBJECTID) {
- ret = btrfs_add_delayed_tree_ref(trans, bytenr,
- num_bytes, parent,
- root_objectid, (int)owner,
- for_reloc,
- BTRFS_DROP_DELAYED_REF, NULL,
+ btrfs_init_tree_ref(&generic_ref, (int)owner, root_objectid);
+ ret = btrfs_add_delayed_tree_ref(trans, &generic_ref, NULL,
&old_ref_mod, &new_ref_mod);
} else {
ret = btrfs_add_delayed_data_ref(trans, root, bytenr,
@@ -8276,6 +8281,7 @@ struct extent_buffer *btrfs_alloc_tree_block(struct
btrfs_trans_handle *trans,
struct btrfs_block_rsv *block_rsv;
struct extent_buffer *buf;
struct btrfs_delayed_extent_op *extent_op;
+ struct btrfs_ref generic_ref = { 0 };
u64 flags = 0;
int ret;
bool for_reloc = false;
@@ -8337,11 +8343,11 @@ struct extent_buffer *btrfs_alloc_tree_block(struct
btrfs_trans_handle *trans,
btrfs_ref_tree_mod(root, ins.objectid, ins.offset, parent,
root_objectid, level, 0,
BTRFS_ADD_DELAYED_EXTENT);
- ret = btrfs_add_delayed_tree_ref(trans, ins.objectid,
- ins.offset, parent,
- root_objectid, level,
- for_reloc,
- BTRFS_ADD_DELAYED_EXTENT,
+ btrfs_init_generic_ref(&generic_ref, BTRFS_ADD_DELAYED_EXTENT,
+ ins.objectid, ins.offset,
+ root->root_key.objectid, parent);
+ btrfs_init_tree_ref(&generic_ref, level, root_objectid);
+ ret = btrfs_add_delayed_tree_ref(trans, &generic_ref,
extent_op, NULL, NULL);
if (ret)
goto out_free_delayed;
--
2.19.2
