From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steffen Maier Subject: [PATCH RESEND 4/4] zfcp: enable FCP hardware data router by default Date: Thu, 22 Aug 2013 17:49:34 +0200 Message-ID: <1377186574-26954-5-git-send-email-maier@linux.vnet.ibm.com> References: <1377099366.2011.23.camel@dabdike.int.hansenpartnership.com> <1377186574-26954-1-git-send-email-maier@linux.vnet.ibm.com> Return-path: In-Reply-To: <1377186574-26954-1-git-send-email-maier@linux.vnet.ibm.com> Sender: linux-scsi-owner@vger.kernel.org List-Archive: List-Post: To: James Bottomley Cc: linux-scsi@vger.kernel.org, linux-s390@vger.kernel.org, Martin Schwidefsky , Heiko Carstens , Steffen Maier List-ID: Enabling the data router support by default can increase performance in certain situations. It is safe to do so and tolerated in LPAR and under z/VM in case there is no data router support in that environment. Signed-off-by: Steffen Maier Reviewed-by: Martin Peschke --- drivers/s390/scsi/zfcp_qdio.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -16,9 +16,9 @@ #define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer)) -static bool enable_multibuffer; +static bool enable_multibuffer = 1; module_param_named(datarouter, enable_multibuffer, bool, 0400); -MODULE_PARM_DESC(datarouter, "Enable hardware data router support"); +MODULE_PARM_DESC(datarouter, "Enable hardware data router support (default on)"); static int zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbal) {