+ return snprintf(buf, 20, "%u\n", sdkp->lbpme);
+}
+
+static const char *lbp_mode[] = {
+ [SD_LBP_FULL] = "full",
+ [SD_LBP_UNMAP] = "unmap",
+ [SD_LBP_WS16] = "writesame_16",
+ [SD_LBP_WS10] = "writesame_10",
+ [SD_LBP_ZERO] = "writesame_zero",
+ [SD_LBP_DISABLE] = "disabled",
+};
+
+static ssize_t
+sd_show_provisioning_mode(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct scsi_disk *sdkp = to_scsi_disk(dev);
+
+ return snprintf(buf, 20, "%s\n", lbp_mode[sdkp->provisioning_mode]);
+}
+
+static ssize_t
+sd_store_provisioning_mode(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct scsi_disk *sdkp = to_scsi_disk(dev);
+ struct scsi_device *sdp = sdkp->device;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ if (sdp->type != TYPE_DISK)
+ return -EINVAL;
+
+ if (!strncmp(buf, lbp_mode[SD_LBP_UNMAP], 20))
+ sd_config_discard(sdkp, SD_LBP_UNMAP);
+ else if (!strncmp(buf, lbp_mode[SD_LBP_WS16], 20))
+ sd_config_discard(sdkp, SD_LBP_WS16);
+ else if (!strncmp(buf, lbp_mode[SD_LBP_WS10], 20))
+ sd_config_discard(sdkp, SD_LBP_WS10);
+ else if (!strncmp(buf, lbp_mode[SD_LBP_ZERO], 20))
+ sd_config_discard(sdkp, SD_LBP_ZERO);
+ else if (!strncmp(buf, lbp_mode[SD_LBP_DISABLE], 20))
+ sd_config_discard(sdkp, SD_LBP_DISABLE);
+ else
+ return -EINVAL;
+
+ return count;