BTRFS_ATTR(static_feature, supported_rescue_options,
supported_rescue_options_show);
+static ssize_t supported_sectorsizes_show(struct kobject *kobj,
+ struct kobj_attribute *a,
+ char *buf)
+{
+ ssize_t ret = 0;
+
+ /* Only sectorsize == PAGE_SIZE is now supported */
+ ret += scnprintf(buf + ret, PAGE_SIZE - ret, "%lu\n", PAGE_SIZE);
+
+ return ret;
+}
+BTRFS_ATTR(static_feature, supported_sectorsizes,
+ supported_sectorsizes_show);
+
static struct attribute *btrfs_supported_static_feature_attrs[] = {
BTRFS_ATTR_PTR(static_feature, rmdir_subvol),
BTRFS_ATTR_PTR(static_feature, supported_checksums),
BTRFS_ATTR_PTR(static_feature, send_stream_version),
BTRFS_ATTR_PTR(static_feature, supported_rescue_options),
+ BTRFS_ATTR_PTR(static_feature, supported_sectorsizes),
NULL
};