diff options
Diffstat (limited to 'drivers/target/target_core_iblock.c')
| -rw-r--r-- | drivers/target/target_core_iblock.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 8a12e29..8fb3822 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -348,6 +348,18 @@ static int iblock_execute_unmap(struct se_cmd *cmd) pr_debug("UNMAP: Using lba: %llu and range: %u\n", (unsigned long long)lba, range); + if (range > dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count) { + cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; + ret = -EINVAL; + goto err; + } + + if (lba + range > dev->transport->get_blocks(dev) + 1) { + cmd->scsi_sense_reason = TCM_ADDRESS_OUT_OF_RANGE; + ret = -EINVAL; + goto err; + } + ret = blkdev_issue_discard(ibd->ibd_bd, lba, range, GFP_KERNEL, 0); if (ret < 0) { |
