return ret;
}
+/*
+ * Inform qgroup to trace one dirty extent, its info is recorded in @record.
+ * So qgroup can account it at transaction committing time.
+ *
+ * No lock version, caller must acquire delayed ref lock and allocated memory,
+ * then call btrfs_qgroup_trace_extent_post() after exiting lock context.
+ *
+ * Return 0 for success insert
+ * Return >0 for existing record, caller can free @record safely.
+ * Error is not possible
+ */
int btrfs_qgroup_trace_extent_nolock(struct btrfs_fs_info *fs_info,
struct btrfs_delayed_ref_root *delayed_refs,
struct btrfs_qgroup_extent_record *record)
return 0;
}
+/*
+ * Post handler after qgroup_trace_extent_nolock().
+ *
+ * NOTE: Current qgroup does the expensive backref walk at transaction
+ * committing time with TRANS_STATE_COMMIT_DOING, this blocks incoming
+ * new transaction.
+ * This is designed to allow btrfs_find_all_roots() to get correct new_roots
+ * result.
+ *
+ * However for old_roots there is no need to do backref walk at that time,
+ * since we search commit roots to walk backref and result will always be
+ * correct.
+ *
+ * Due to the nature of no lock version, we can't do backref there.
+ * So we must call btrfs_qgroup_trace_extent_post() after exiting
+ * spinlock context.
+ *
+ * TODO: If we can fix and prove btrfs_find_all_roots() can get correct result
+ * using current root, then we can move all expensive backref walk out of
+ * transaction committing, but not now as qgroup accounting will be wrong again.
+ */
int btrfs_qgroup_trace_extent_post(struct btrfs_trans_handle *trans,
struct btrfs_qgroup_extent_record *qrecord)
{
return 0;
}
+/*
+ * Inform qgroup to trace one dirty extent, specified by @bytenr and
+ * @num_bytes.
+ * So qgroup can account it at commit trans time.
+ *
+ * Better encapsulated version, with memory allocation and backref walk for
+ * commit roots.
+ * So this can sleep.
+ *
+ * Return 0 if the operation is done.
+ * Return <0 for error, like memory allocation failure or invalid parameter
+ * (NULL trans)
+ */
int btrfs_qgroup_trace_extent(struct btrfs_trans_handle *trans, u64 bytenr,
u64 num_bytes)
{
return btrfs_qgroup_trace_extent_post(trans, record);
}
+/*
+ * Inform qgroup to trace all leaf items of data
+ *
+ * Return 0 for success
+ * Return <0 for error(ENOMEM)
+ */
int btrfs_qgroup_trace_leaf_items(struct btrfs_trans_handle *trans,
struct extent_buffer *eb)
{
return ret;
}
+/*
+ * Inform qgroup to trace a whole subtree, including all its child tree
+ * blocks and data.
+ * The root tree block is specified by @root_eb.
+ *
+ * Normally used by relocation(tree block swap) and subvolume deletion.
+ *
+ * Return 0 for success
+ * Return <0 for error(ENOMEM or tree search error)
+ */
int btrfs_qgroup_trace_subtree(struct btrfs_trans_handle *trans,
struct extent_buffer *root_eb,
u64 root_gen, int root_level)
return btrfs_qgroup_reserve_meta(root, num_bytes, type, enforce);
}
+/*
+ * Per-transaction meta reservation should be all freed at transaction commit
+ * time
+ */
void btrfs_qgroup_free_meta_all_pertrans(struct btrfs_root *root)
{
struct btrfs_fs_info *fs_info = root->fs_info;
spin_unlock(&fs_info->qgroup_lock);
}
+/*
+ * Convert @num_bytes of META_PREALLOCATED reservation to META_PERTRANS.
+ *
+ * This is called when preallocated meta reservation needs to be used.
+ * Normally after btrfs_join_transaction() call.
+ */
void btrfs_qgroup_convert_reserved_meta(struct btrfs_root *root, int num_bytes)
{
struct btrfs_fs_info *fs_info = root->fs_info;
void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info);
struct btrfs_delayed_extent_op;
-/*
- * Inform qgroup to trace one dirty extent, its info is recorded in @record.
- * So qgroup can account it at transaction committing time.
- *
- * No lock version, caller must acquire delayed ref lock and allocated memory,
- * then call btrfs_qgroup_trace_extent_post() after exiting lock context.
- *
- * Return 0 for success insert
- * Return >0 for existing record, caller can free @record safely.
- * Error is not possible
- */
int btrfs_qgroup_trace_extent_nolock(
struct btrfs_fs_info *fs_info,
struct btrfs_delayed_ref_root *delayed_refs,
struct btrfs_qgroup_extent_record *record);
-
-/*
- * Post handler after qgroup_trace_extent_nolock().
- *
- * NOTE: Current qgroup does the expensive backref walk at transaction
- * committing time with TRANS_STATE_COMMIT_DOING, this blocks incoming
- * new transaction.
- * This is designed to allow btrfs_find_all_roots() to get correct new_roots
- * result.
- *
- * However for old_roots there is no need to do backref walk at that time,
- * since we search commit roots to walk backref and result will always be
- * correct.
- *
- * Due to the nature of no lock version, we can't do backref there.
- * So we must call btrfs_qgroup_trace_extent_post() after exiting
- * spinlock context.
- *
- * TODO: If we can fix and prove btrfs_find_all_roots() can get correct result
- * using current root, then we can move all expensive backref walk out of
- * transaction committing, but not now as qgroup accounting will be wrong again.
- */
int btrfs_qgroup_trace_extent_post(struct btrfs_trans_handle *trans,
struct btrfs_qgroup_extent_record *qrecord);
-
-/*
- * Inform qgroup to trace one dirty extent, specified by @bytenr and
- * @num_bytes.
- * So qgroup can account it at commit trans time.
- *
- * Better encapsulated version, with memory allocation and backref walk for
- * commit roots.
- * So this can sleep.
- *
- * Return 0 if the operation is done.
- * Return <0 for error, like memory allocation failure or invalid parameter
- * (NULL trans)
- */
int btrfs_qgroup_trace_extent(struct btrfs_trans_handle *trans, u64 bytenr,
u64 num_bytes);
-
-/*
- * Inform qgroup to trace all leaf items of data
- *
- * Return 0 for success
- * Return <0 for error(ENOMEM)
- */
int btrfs_qgroup_trace_leaf_items(struct btrfs_trans_handle *trans,
struct extent_buffer *eb);
-/*
- * Inform qgroup to trace a whole subtree, including all its child tree
- * blocks and data.
- * The root tree block is specified by @root_eb.
- *
- * Normally used by relocation(tree block swap) and subvolume deletion.
- *
- * Return 0 for success
- * Return <0 for error(ENOMEM or tree search error)
- */
int btrfs_qgroup_trace_subtree(struct btrfs_trans_handle *trans,
struct extent_buffer *root_eb,
u64 root_gen, int root_level);
BTRFS_QGROUP_RSV_META_PREALLOC);
}
-/*
- * Per-transaction meta reservation should be all freed at transaction commit
- * time
- */
void btrfs_qgroup_free_meta_all_pertrans(struct btrfs_root *root);
-
-/*
- * Convert @num_bytes of META_PREALLOCATED reservation to META_PERTRANS.
- *
- * This is called when preallocated meta reservation needs to be used.
- * Normally after btrfs_join_transaction() call.
- */
void btrfs_qgroup_convert_reserved_meta(struct btrfs_root *root, int num_bytes);
-
void btrfs_qgroup_check_reserved_leak(struct btrfs_inode *inode);
/* btrfs_qgroup_swapped_blocks related functions */
projects / linux-2.6-block.git / commitdiff