diff options
| author | Christoph Hellwig <hch@lst.de> | 2015-06-19 15:11:00 +0200 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2015-06-23 00:43:46 -0700 |
| commit | b753d643555e548163adfa2de9d75e0257e4b356 (patch) | |
| tree | d2b1f871b7815e28699886430bb6ede5a2cf0761 /drivers/target/target_core_sbc.c | |
| parent | 62e4694256dd3cbe301ebc0da799df8779b97014 (diff) | |
| download | linux-b753d643555e548163adfa2de9d75e0257e4b356.tar.gz | |
target: implement WRITE_SAME with UNMAP bit using ->execute_unmap
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_sbc.c')
| -rw-r--r-- | drivers/target/target_core_sbc.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index c16a66698725..9a5e7d094a5d 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -178,6 +178,23 @@ sector_t sbc_get_write_same_sectors(struct se_cmd *cmd) EXPORT_SYMBOL(sbc_get_write_same_sectors); static sense_reason_t +sbc_execute_write_same_unmap(struct se_cmd *cmd) +{ + struct sbc_ops *ops = cmd->protocol_data; + sector_t nolb = sbc_get_write_same_sectors(cmd); + sense_reason_t ret; + + if (nolb) { + ret = ops->execute_unmap(cmd, cmd->t_task_lba, nolb); + if (ret) + return ret; + } + + target_complete_cmd(cmd, GOOD); + return 0; +} + +static sense_reason_t sbc_emulate_noop(struct se_cmd *cmd) { target_complete_cmd(cmd, GOOD); @@ -300,7 +317,7 @@ sbc_setup_write_same(struct se_cmd *cmd, unsigned char *flags, struct sbc_ops *o * translated into block discard requests within backend code. */ if (flags[0] & 0x08) { - if (!ops->execute_write_same_unmap) + if (!ops->execute_unmap) return TCM_UNSUPPORTED_SCSI_OPCODE; if (!dev->dev_attrib.emulate_tpws) { @@ -308,7 +325,7 @@ sbc_setup_write_same(struct se_cmd *cmd, unsigned char *flags, struct sbc_ops *o " has emulate_tpws disabled\n"); return TCM_UNSUPPORTED_SCSI_OPCODE; } - cmd->execute_cmd = ops->execute_write_same_unmap; + cmd->execute_cmd = sbc_execute_write_same_unmap; return 0; } if (!ops->execute_write_same) |