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[6/7] Btrfs: qgroup: account data and metadata separately in rescan.

Message ID 1426744864-7031-11-git-send-email-yangds.fnst@cn.fujitsu.com (mailing list archive)
State New, archived
Headers show

Commit Message

Yang Dongsheng March 19, 2015, 6:01 a.m. UTC
So far, we can account quota number for data and metadata separately,
but in quota resan, we have not implemented this feature. This patch
make the rescan smart to distingush data and metadata and account them
separately.

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
---
 fs/btrfs/qgroup.c | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 9363fd0..bb98bdd 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -2872,6 +2872,8 @@  qgroup_rescan_leaf(struct btrfs_fs_info *fs_info, struct btrfs_path *path,
 	int new_roots;
 	int slot;
 	int ret;
+	bool skinny_metadata = btrfs_fs_incompat(fs_info,
+						 SKINNY_METADATA);
 
 	path->leave_spinning = 1;
 	mutex_lock(&fs_info->qgroup_rescan_lock);
@@ -2910,14 +2912,27 @@  qgroup_rescan_leaf(struct btrfs_fs_info *fs_info, struct btrfs_path *path,
 	mutex_unlock(&fs_info->qgroup_rescan_lock);
 
 	for (; slot < btrfs_header_nritems(scratch_leaf); ++slot) {
+		u8 quota_type = BTRFS_QGROUP_REF_TYPE_DATA;
+		struct btrfs_extent_item *ei;
+		u64 flags;
+
+		ei = btrfs_item_ptr(scratch_leaf, slot, struct btrfs_extent_item);
+		flags = btrfs_extent_flags(scratch_leaf, ei);
+
 		btrfs_item_key_to_cpu(scratch_leaf, &found, slot);
 		if (found.type != BTRFS_EXTENT_ITEM_KEY &&
 		    found.type != BTRFS_METADATA_ITEM_KEY)
 			continue;
-		if (found.type == BTRFS_METADATA_ITEM_KEY)
+		if (found.type == BTRFS_METADATA_ITEM_KEY) {
 			num_bytes = fs_info->extent_root->nodesize;
-		else
+			if (btrfs_fs_incompat(fs_info, QGROUP_TYPE))
+				quota_type = BTRFS_QGROUP_REF_TYPE_METADATA;
+		} else {
 			num_bytes = found.offset;
+			if (!skinny_metadata && (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) &&
+			    btrfs_fs_incompat(fs_info, QGROUP_TYPE))
+				quota_type = BTRFS_QGROUP_REF_TYPE_METADATA;
+		}
 
 		ulist_reinit(qgroups);
 		ret = btrfs_find_all_roots(NULL, fs_info, found.objectid, 0,
@@ -2937,7 +2952,7 @@  qgroup_rescan_leaf(struct btrfs_fs_info *fs_info, struct btrfs_path *path,
 			goto out;
 		}
 
-		ret = qgroup_adjust_counters(fs_info, 0, num_bytes, 0, qgroups,
+		ret = qgroup_adjust_counters(fs_info, 0, num_bytes, quota_type, qgroups,
 					     seq, 0, new_roots, 1);
 		if (ret < 0) {
 			spin_unlock(&fs_info->qgroup_lock);