Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit bc47df0f authored by Boaz Harrosh's avatar Boaz Harrosh
Browse files

osdblk: Adjust queue limits to lower device's limits 



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: default avatarBoaz Harrosh <bharrosh@panasas.com>
parent 2a13877c

drivers/block/osdblk.c

+7 −0
Original line number Diff line number Diff line
@@ -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 ": "
@@ -437,6 +438,12 @@ 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);