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authorQu Wenruo <quwenruo@cn.fujitsu.com>2017-03-13 10:52:08 +0300
committerDavid Sterba <dsterba@suse.com>2017-04-18 15:07:26 +0300
commit3159fe7baef3a50fc332455e252d8a01a18f1ff1 (patch)
treeca26143b362f515627de469a0422e4045a1a4232 /fs/btrfs/qgroup.h
parent825ad4c96432a3908625dd1a79d6528e969e1a09 (diff)
downloadlinux-3159fe7baef3a50fc332455e252d8a01a18f1ff1.tar.xz
btrfs: qgroup: Add trace point for qgroup reserved space
Introduce the following trace points: qgroup_update_reserve qgroup_meta_reserve These trace points are handy to trace qgroup reserve space related problems. Also export btrfs_qgroup structure, as now we directly pass btrfs_qgroup structure to trace points, so that structure needs to be exported. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/qgroup.h')
-rw-r--r--fs/btrfs/qgroup.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index 96fc56ebf55a..31e468b16175 100644
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -62,6 +62,50 @@ struct btrfs_qgroup_extent_record {
};
/*
+ * one struct for each qgroup, organized in fs_info->qgroup_tree.
+ */
+struct btrfs_qgroup {
+ u64 qgroupid;
+
+ /*
+ * state
+ */
+ u64 rfer; /* referenced */
+ u64 rfer_cmpr; /* referenced compressed */
+ u64 excl; /* exclusive */
+ u64 excl_cmpr; /* exclusive compressed */
+
+ /*
+ * limits
+ */
+ u64 lim_flags; /* which limits are set */
+ u64 max_rfer;
+ u64 max_excl;
+ u64 rsv_rfer;
+ u64 rsv_excl;
+
+ /*
+ * reservation tracking
+ */
+ u64 reserved;
+
+ /*
+ * lists
+ */
+ struct list_head groups; /* groups this group is member of */
+ struct list_head members; /* groups that are members of this group */
+ struct list_head dirty; /* dirty groups */
+ struct rb_node node; /* tree of qgroups */
+
+ /*
+ * temp variables for accounting operations
+ * Refer to qgroup_shared_accounting() for details.
+ */
+ u64 old_refcnt;
+ u64 new_refcnt;
+};
+
+/*
* For qgroup event trace points only
*/
#define QGROUP_RESERVE (1<<0)