From: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>
For in-band dedupe, btrfs needs to increase data ref with delayed_ref
locked, so add a new function btrfs_add_delayed_data_ref_lock() to
increase extent ref with delayed_refs already locked.
Signed-off-by: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>
Reviewed-by: Josef Bacik <jbacik@xxxxxx>
Signed-off-by: Lu Fengqi <lufq.fnst@xxxxxxxxxxxxxx>
---
fs/btrfs/delayed-ref.c | 36 ++++++++++++++++++++++++++++--------
fs/btrfs/delayed-ref.h | 10 ++++++++++
2 files changed, 38 insertions(+), 8 deletions(-)
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index 83be8f9fd906..1a342665a3b0 100644
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -832,6 +832,30 @@ int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
return -ENOMEM;
}
+/*
+ * Do real delayed data ref insert.
+ * Caller must hold delayed_refs->lock and allocation memory
+ * for dref,head_ref and record.
+ */
+void btrfs_add_delayed_data_ref_locked(struct btrfs_fs_info *fs_info,
+ struct btrfs_trans_handle *trans,
+ struct btrfs_delayed_data_ref *dref,
+ struct btrfs_delayed_ref_head *head_ref,
+ struct btrfs_qgroup_extent_record *qrecord,
+ u64 bytenr, u64 num_bytes, u64 parent, u64 ref_root,
+ u64 owner, u64 offset, u64 reserved, int action,
+ int *qrecord_inserted_ret, int *old_ref_mod,
+ int *new_ref_mod)
+{
+ head_ref = add_delayed_ref_head(fs_info, trans, head_ref, qrecord,
+ bytenr, num_bytes, ref_root, reserved,
+ action, 1, qrecord_inserted_ret,
+ old_ref_mod, new_ref_mod);
+ add_delayed_data_ref(fs_info, trans, head_ref, &dref->node, bytenr,
+ num_bytes, parent, ref_root, owner, offset,
+ action);
+}
+
/*
* add a delayed data ref. it's similar to btrfs_add_delayed_tree_ref.
*/
@@ -878,14 +902,10 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
* insert both the head node and the new ref without dropping
* the spin lock
*/
- head_ref = add_delayed_ref_head(fs_info, trans, head_ref, record,
- bytenr, num_bytes, ref_root, reserved,
- action, 1, &qrecord_inserted,
- old_ref_mod, new_ref_mod);
-
- add_delayed_data_ref(fs_info, trans, head_ref, &ref->node, bytenr,
- num_bytes, parent, ref_root, owner, offset,
- action);
+ btrfs_add_delayed_data_ref_locked(fs_info, trans, ref, head_ref, record,
+ bytenr, num_bytes, parent, ref_root, owner, offset,
+ reserved, action, &qrecord_inserted, old_ref_mod,
+ new_ref_mod);
spin_unlock(&delayed_refs->lock);
if (qrecord_inserted)
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index a43af432f859..ea545d8dcf4f 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -245,12 +245,22 @@ static inline void btrfs_put_delayed_ref_head(struct btrfs_delayed_ref_head *hea
kmem_cache_free(btrfs_delayed_ref_head_cachep, head);
}
+struct btrfs_qgroup_extent_record;
int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
u64 bytenr, u64 num_bytes, u64 parent,
u64 ref_root, int level, int action,
struct btrfs_delayed_extent_op *extent_op,
int *old_ref_mod, int *new_ref_mod);
+void btrfs_add_delayed_data_ref_locked(struct btrfs_fs_info *fs_info,
+ struct btrfs_trans_handle *trans,
+ struct btrfs_delayed_data_ref *dref,
+ struct btrfs_delayed_ref_head *head_ref,
+ struct btrfs_qgroup_extent_record *qrecord,
+ u64 bytenr, u64 num_bytes, u64 parent, u64 ref_root,
+ u64 owner, u64 offset, u64 reserved, int action,
+ int *qrecord_inserted_ret, int *old_ref_mod,
+ int *new_ref_mod);
int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
u64 bytenr, u64 num_bytes,
--
2.15.1
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