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 <maier@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Martin Peschke <mpeschke@xxxxxxxxxxxxxxxxxx>
---
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)
{
--
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