3.0-stable review patch. If anyone has any objections, please let me know.
------------------ From: Roland Dreier <[email protected]> commit 6cf3fa6918baab0c447f1206f1cef9166ad04864 upstream. If the target core signals an over- or under-run, tcm_loop should call scsi_set_resid() to tell the SCSI midlayer about the residual data length. The difference can be seen by doing something like strace -eioctl sg_raw -r 1024 /dev/sda 8 0 0 0 1 0 > /dev/null and looking at the "resid=" part of the SG_IO ioctl -- after this patch, the field is correctly reported as 512. Signed-off-by: Roland Dreier <[email protected]> Signed-off-by: Nicholas Bellinger <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/target/loopback/tcm_loop.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -905,6 +905,9 @@ static int tcm_loop_queue_data_in(struct sc->result = SAM_STAT_GOOD; set_host_byte(sc, DID_OK); + if ((se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) || + (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT)) + scsi_set_resid(sc, se_cmd->residual_count); sc->scsi_done(sc); return 0; } @@ -930,6 +933,9 @@ static int tcm_loop_queue_status(struct sc->result = se_cmd->scsi_status; set_host_byte(sc, DID_OK); + if ((se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) || + (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT)) + scsi_set_resid(sc, se_cmd->residual_count); sc->scsi_done(sc); return 0; } -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
