Re: iSER initiator in 4.5 is unhappy..

[Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>]

On 4/8/2016 1:13 AM, Christoph Hellwig wrote:
> The patch below fixes the issue for me.  But for SRP I'm still seeing
> lots of these failures even with the equivalent patch applied:
>
> [ 426.027905] scsi host8: ib_srp: Failed to map data (-12)
> [  426.053203] scsi host8: ib_srp: Failed to map data (-12)
> [  426.053265] scsi host8: ib_srp: Failed to map data (-12)
> [  426.053270] scsi host8: ib_srp: Failed to map data (-12)
> [  426.053273] scsi host8: ib_srp: Failed to map data (-12)
> [  426.053276] scsi host8: ib_srp: Failed to map data (-12)
> [  426.053279] scsi host8: ib_srp: Failed to map data (-12)
>
> It seems the actual reproducer is xfs_repair as run by xfstests.
>
> diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
> index 60b169a..3ac4755 100644
> --- a/drivers/infiniband/ulp/srp/ib_srp.c
> +++ b/drivers/infiniband/ulp/srp/ib_srp.c
> @@ -3205,6 +3205,7 @@ static ssize_t srp_create_target(struct device *dev,
>   	target_host->max_id      = 1;
>   	target_host->max_lun     = -1LL;
>   	target_host->max_cmd_len = sizeof ((struct srp_cmd *) (void *) 0L)->cdb;
> +	target_host->max_segment_size = PAGE_SIZE;
>
>   	target = host_to_target(target_host);

Hi Christoph,
did you add similar assignment in iser code or only used the scsi patches ?
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