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| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-04-16 09:34:17 +0300 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-06-10 19:25:32 +0300 |
| commit | 3368d001ba5df44930d986e82b1b497d4da285ba (patch) | |
| tree | 62797b833909d45d2e8b6244c4007d6661154f67 /fs/btrfs/qgroup.c | |
| parent | 823ae5b8e340003dacbe7cd08a355efe018c9f1b (diff) | |
| download | linux-3368d001ba5df44930d986e82b1b497d4da285ba.tar.xz | |
btrfs: qgroup: Record possible quota-related extent for qgroup.
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>
Diffstat (limited to 'fs/btrfs/qgroup.c')
| -rw-r--r-- | fs/btrfs/qgroup.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 2f185eee2387..55465d5d788e 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -1553,6 +1553,37 @@ int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans, return 0; } +struct btrfs_qgroup_extent_record +*btrfs_qgroup_insert_dirty_extent(struct btrfs_delayed_ref_root *delayed_refs, + struct btrfs_qgroup_extent_record *record) +{ + struct rb_node **p = &delayed_refs->dirty_extent_root.rb_node; + struct rb_node *parent_node = NULL; + struct btrfs_qgroup_extent_record *entry; + u64 bytenr = record->bytenr; + + while (*p) { + parent_node = *p; + entry = rb_entry(parent_node, struct btrfs_qgroup_extent_record, + node); + if (bytenr < entry->bytenr) + p = &(*p)->rb_left; + else if (bytenr > entry->bytenr) + p = &(*p)->rb_right; + else + return entry; + } + + rb_link_node(&record->node, parent_node, p); + rb_insert_color(&record->node, &delayed_refs->dirty_extent_root); + return NULL; +} + +/* + * The easy accounting, if we are adding/removing the only ref for an extent + * then this qgroup and all of the parent qgroups get their refrence and + * exclusive counts adjusted. + */ static int qgroup_excl_accounting(struct btrfs_fs_info *fs_info, struct btrfs_qgroup_operation *oper) { |