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btrfs: qgroup: Record possible quota-related extent for qgroup.

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Add hook in add_delayed_ref_head() to record quota-related extent record
into delayed_ref_root->dirty_extent_record rb-tree for later qgroup
accounting.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Qu Wenruo
2015-04-16 14:34:17 +08:00
committed by Chris Mason
parent 823ae5b8e3
commit 3368d001ba
5 changed files with 95 additions and 7 deletions
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17
fs/btrfs/qgroup.h
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@@ -19,6 +19,9 @@
#ifndef __BTRFS_QGROUP__
#define __BTRFS_QGROUP__
#include "ulist.h"
#include "delayed-ref.h"
/*
* A description of the operations, all of these operations only happen when we
* are adding the 1st reference for that subvolume in the case of adding space
@@ -58,6 +61,17 @@ struct btrfs_qgroup_operation {
struct list_head list;
};
/*
* Record a dirty extent, and info qgroup to update quota on it
* TODO: Use kmem cache to alloc it.
*/
struct btrfs_qgroup_extent_record {
struct rb_node node;
u64 bytenr;
u64 num_bytes;
struct ulist *old_roots;
};
int btrfs_quota_enable(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int btrfs_quota_disable(struct btrfs_trans_handle *trans,
@@ -84,6 +98,9 @@ int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans,
u64 bytenr, u64 num_bytes,
enum btrfs_qgroup_operation_type type,
int mod_seq);
struct btrfs_qgroup_extent_record
*btrfs_qgroup_insert_dirty_extent(struct btrfs_delayed_ref_root *delayed_refs,
struct btrfs_qgroup_extent_record *record);
int btrfs_delayed_qgroup_accounting(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
void btrfs_remove_qgroup_operation(struct btrfs_trans_handle *trans,