Re: [PATCH v2 1/1] IB/isert: add module param to set sg_tablesize for IO cmd

[Jason Gunthorpe <jgg@nvidia.com>]

On Mon, Oct 19, 2020 at 12:46:28PM +0300, Max Gurtovoy wrote:
> Currently, iser target support max IO size of 16MiB by default. For some
> adapters, allocating this amount of resources might reduce the total
> number of possible connections that can be created. For those adapters,
> it's preferred to reduce the max IO size to be able to create more
> connections. Since there is no handshake procedure for max IO size in
> iser protocol, set the default max IO size to 1MiB and add a module
> parameter for enabling the option to control it for suitable adapters.
> 
> Fixes: 317000b926b0 ("IB/isert: allocate RW ctxs according to max IO size")
> Reported-by: Krishnamraju Eraparaju <krishna2@chelsio.com>
> Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
> Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
> ---
> 
> changes from v1:
>  - added "Fixes" line (Sagi)
>  - renamed ISCSI_ISER_SG_TABLESIZE to ISCSI_ISER_DEF_SG_TABLESIZE (Sagi)
>  - added "Reviewed-by" signature
> 
> ---
>  drivers/infiniband/ulp/isert/ib_isert.c | 27 ++++++++++++++++++++++++-
>  drivers/infiniband/ulp/isert/ib_isert.h |  6 ++++++
>  2 files changed, 32 insertions(+), 1 deletion(-)

Applied to for-next, thanks

Jason