diff options
Diffstat (limited to 'drivers/target/target_core_iblock.c')
| -rw-r--r-- | drivers/target/target_core_iblock.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 863c962e5021..ee70cc9f6a64 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -327,6 +327,23 @@ static int iblock_do_discard(struct se_device *dev, sector_t lba, u32 range) return blkdev_issue_discard(bd, lba, range, GFP_KERNEL, barrier); } +static int iblock_execute_write_same(struct se_cmd *cmd) +{ + struct iblock_dev *ibd = cmd->se_dev->dev_ptr; + int ret; + + ret = blkdev_issue_discard(ibd->ibd_bd, cmd->t_task_lba, + spc_get_write_same_sectors(cmd), GFP_KERNEL, + 0); + if (ret < 0) { + pr_debug("blkdev_issue_discard() failed for WRITE_SAME\n"); + return ret; + } + + target_complete_cmd(cmd, GOOD); + return 0; +} + enum { Opt_udev_path, Opt_readonly, Opt_force, Opt_err }; @@ -669,6 +686,7 @@ static void iblock_bio_done(struct bio *bio, int err) static struct spc_ops iblock_spc_ops = { .execute_rw = iblock_execute_rw, .execute_sync_cache = iblock_execute_sync_cache, + .execute_write_same = iblock_execute_write_same, }; static int iblock_parse_cdb(struct se_cmd *cmd) |