btrfs: qgroup: Drop root parameter from update_qgroup_limit_item

It can be fetched from the transaction handle.

Signed-off-by: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 67e0f4f..44e1462 100644 (file)
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -700,9 +700,9 @@ out:
 }
 
 static int update_qgroup_limit_item(struct btrfs_trans_handle *trans,
-                                   struct btrfs_root *root,
                                    struct btrfs_qgroup *qgroup)
 {
+       struct btrfs_root *quota_root = trans->fs_info->quota_root;
        struct btrfs_path *path;
        struct btrfs_key key;
        struct extent_buffer *l;
@@ -718,7 +718,7 @@ static int update_qgroup_limit_item(struct btrfs_trans_handle *trans,
        if (!path)
                return -ENOMEM;
 
-       ret = btrfs_search_slot(trans, root, &key, path, 0, 1);
+       ret = btrfs_search_slot(trans, quota_root, &key, path, 0, 1);
        if (ret > 0)
                ret = -ENOENT;
 
@@ -1509,7 +1509,7 @@ int btrfs_limit_qgroup(struct btrfs_trans_handle *trans,
 
        spin_unlock(&fs_info->qgroup_lock);
 
-       ret = update_qgroup_limit_item(trans, quota_root, qgroup);
+       ret = update_qgroup_limit_item(trans, qgroup);
        if (ret) {
                fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
                btrfs_info(fs_info, "unable to update quota limit for %llu",
@@ -2214,7 +2214,7 @@ int btrfs_run_qgroups(struct btrfs_trans_handle *trans,
                if (ret)
                        fs_info->qgroup_flags |=
                                        BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
-               ret = update_qgroup_limit_item(trans, quota_root, qgroup);
+               ret = update_qgroup_limit_item(trans, qgroup);
                if (ret)
                        fs_info->qgroup_flags |=
                                        BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
@@ -2323,7 +2323,7 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,
                dstgroup->rsv_rfer = inherit->lim.rsv_rfer;
                dstgroup->rsv_excl = inherit->lim.rsv_excl;
 
-               ret = update_qgroup_limit_item(trans, quota_root, dstgroup);
+               ret = update_qgroup_limit_item(trans, dstgroup);
                if (ret) {
                        fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
                        btrfs_info(fs_info,