Currently I/Os are being queued when secure erase operation starts, and issue them after the operation completes. As all data will be gone when the operation completes, any queued I/O doesn't make sense. Hence, abort I/O (return -ENODATA) as soon as the driver receives.
Signed-off-by: Selvan Mani <[email protected]> Signed-off-by: Asai Thambi S P <[email protected]> --- drivers/block/mtip32xx/mtip32xx.c | 32 ++++++++++++++++++++++++++++---- 1 files changed, 28 insertions(+), 4 deletions(-) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index e905c81..92cb601 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -994,7 +994,6 @@ static bool mtip_pause_ncq(struct mtip_port *port, return false; if (fis->command == ATA_CMD_SEC_ERASE_PREP) { - set_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags); port->ic_pause_timer = jiffies; return true; } else if ((fis->command == ATA_CMD_DOWNLOAD_MICRO) && @@ -1009,6 +1008,7 @@ static bool mtip_pause_ncq(struct mtip_port *port, clear_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag); /* Com reset after secure erase or lowlevel format */ mtip_restart_port(port); + clear_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags); return false; } @@ -1108,9 +1108,10 @@ static int mtip_exec_internal_command(struct mtip_port *port, int_cmd = mtip_get_int_command(dd); set_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags); - port->ic_pause_timer = 0; - clear_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags); + if (fis->command == ATA_CMD_SEC_ERASE_PREP) + set_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags); + clear_bit(MTIP_PF_DM_ACTIVE_BIT, &port->flags); if (atomic == GFP_KERNEL) { @@ -1247,11 +1248,11 @@ static int mtip_exec_internal_command(struct mtip_port *port, exec_ic_exit: /* Clear the allocated and active bits for the internal command. */ mtip_put_int_command(dd, int_cmd); + clear_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags); if (rv >= 0 && mtip_pause_ncq(port, fis)) { /* NCQ paused */ return rv; } - clear_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags); wake_up_interruptible(&port->svc_wait); return rv; @@ -3684,6 +3685,26 @@ static const struct block_device_operations mtip_block_ops = { .owner = THIS_MODULE }; +static inline bool is_se_active(struct driver_data *dd) +{ + if (unlikely(test_bit(MTIP_PF_SE_ACTIVE_BIT, &dd->port->flags))) { + if (dd->port->ic_pause_timer) { + unsigned long to = dd->port->ic_pause_timer + + msecs_to_jiffies(1000); + if (time_after(jiffies, to)) { + clear_bit(MTIP_PF_SE_ACTIVE_BIT, + &dd->port->flags); + clear_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag); + dd->port->ic_pause_timer = 0; + wake_up_interruptible(&dd->port->svc_wait); + return false; + } + } + return true; + } + return false; +} + /* * Block layer make request function. * @@ -3701,6 +3722,9 @@ static int mtip_submit_request(struct blk_mq_hw_ctx *hctx, struct request *rq) struct mtip_cmd *cmd = blk_mq_rq_to_pdu(rq); unsigned int nents; + if (is_se_active(dd)) + return -ENODATA; + if (unlikely(dd->dd_flag & MTIP_DDF_STOP_IO)) { if (unlikely(test_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag))) { -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
