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authorQu Wenruo <quwenruo@cn.fujitsu.com>2015-04-20 04:53:50 +0300
committerChris Mason <clm@fb.com>2015-06-10 19:26:23 +0300
commit9086db86e0b09c39abead4d747119695553e3978 (patch)
tree26cba099d0d7c8209e036024f70b32d3bd2615e0 /fs/btrfs/delayed-ref.h
parentd4b804045924d7f8d2ea988be22c4b9e6492ec11 (diff)
downloadlinux-9086db86e0b09c39abead4d747119695553e3978.tar.xz
btrfs: qgroup: Add the ability to skip given qgroup for old/new_roots.
This is used by later qgroup fix patches for snapshot. As current snapshot accounting is done by btrfs_qgroup_inherit(), but new extent oriented quota mechanism will account extent from btrfs_copy_root() and other snapshot things, causing wrong result. So add this ability to handle snapshot accounting. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/delayed-ref.h')
-rw-r--r--fs/btrfs/delayed-ref.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index 4016f963599e..13fb5e6090fe 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -175,6 +175,14 @@ struct btrfs_delayed_ref_root {
int flushing;
u64 run_delayed_start;
+
+ /*
+ * To make qgroup to skip given root.
+ * This is for snapshot, as btrfs_qgroup_inherit() will manully
+ * modify counters for snapshot and its source, so we should skip
+ * the snapshot in new_root/old_roots or it will get calculated twice
+ */
+ u64 qgroup_to_skip;
};
extern struct kmem_cache *btrfs_delayed_ref_head_cachep;