[PATCH v2 6/8] scsi: core: Set the SUB_PAGE_SEGMENTS request queue flag

Bart Van Assche
2022-11-23T20:58:28Z

This patch enables support for segments smaller than the page size.
No changes other than setting the SUB_PAGE_SEGMENTS flag are required
since the SCSI code uses blk_rq_map_sg().

Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
drivers/scsi/scsi_lib.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 249757ddd8fe..d91aefdfb8d4 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1877,6 +1877,8 @@ void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q)
{
struct device *dev = shost->dma_dev;

+ blk_queue_flag_set(QUEUE_FLAG_SUB_PAGE_SEGMENTS, q);
+
/*
* this limit is imposed by hardware restrictions
*/