call blk_queue_stack_limits() to copy queue limits from the underline osd scsi_device. This is absolutely needed because osdblk cannot sleep when allocating a lower-request and therefore cannot be bouncing. TODO: Dynamic changes of limits to the lower device queue will not reflect in the upper driver Signed-off-by: Boaz Harrosh <bharrosh@xxxxxxxxxxx> --- drivers/block/osdblk.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c index 531d234..0da8ce0 100644 --- a/drivers/block/osdblk.c +++ b/drivers/block/osdblk.c @@ -66,6 +66,7 @@ #include <scsi/osd_initiator.h> #include <scsi/osd_attributes.h> #include <scsi/osd_sec.h> +#include <scsi/scsi_device.h> #define DRV_NAME "osdblk" #define PFX DRV_NAME ": " @@ -410,6 +411,12 @@ static int osdblk_init_disk(struct osdblk_device *osdev) return rc; } + /* Set our limits to the lower device limits, because osdblk cannot + * sleep when allocating a lower-request and therefore cannot be + * bouncing. + */ + blk_queue_stack_limits(q, osd_request_queue(osdev->osd)); + blk_queue_prep_rq(q, blk_queue_start_tag); blk_queue_ordered(q, QUEUE_ORDERED_DRAIN_FLUSH, osdblk_prepare_flush); -- 1.6.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
