From: Bart Van Assche <bvanassche@acm.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
Bart Van Assche <bvanassche@acm.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
"James E.J. Bottomley" <jejb@linux.ibm.com>
Subject: [PATCH 08/10] scsi: core: Set the SUB_PAGE_SEGMENTS request queue flag
Date: Wed, 19 Oct 2022 15:23:22 -0700 [thread overview]
Message-ID: <20221019222324.362705-9-bvanassche@acm.org> (raw)
In-Reply-To: <20221019222324.362705-1-bvanassche@acm.org>
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 8b89fab7c420..821149a57fbf 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
*/
next prev parent reply other threads:[~2022-10-19 22:23 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-19 22:23 [PATCH 00/10] Support DMA segments smaller than the page size Bart Van Assche
2022-10-19 22:23 ` [PATCH 01/10] block: Remove request.write_hint Bart Van Assche
2022-10-21 1:59 ` Ming Lei
2022-10-19 22:23 ` [PATCH 02/10] block: Constify most queue limits pointers Bart Van Assche
2022-10-21 2:01 ` Ming Lei
2022-10-19 22:23 ` [PATCH 03/10] block: Micro-optimize get_max_segment_size() Bart Van Assche
2022-10-21 2:17 ` Ming Lei
2022-10-19 22:23 ` [PATCH 04/10] block: Add support for small segments in blk_rq_map_user_iov() Bart Van Assche
2022-10-19 22:23 ` [PATCH 05/10] block: Introduce QUEUE_FLAG_SUB_PAGE_SEGMENTS Bart Van Assche
2022-10-19 22:23 ` [PATCH 06/10] block: Fix the number of segment calculations Bart Van Assche
2022-11-01 17:23 ` Bart Van Assche
2022-11-02 1:22 ` Ming Lei
2022-11-03 19:32 ` Bart Van Assche
2022-10-19 22:23 ` [PATCH 07/10] block: Add support for segments smaller than the page size Bart Van Assche
2022-10-19 22:23 ` Bart Van Assche [this message]
2022-10-19 22:23 ` [PATCH 09/10] scsi_debug: Support configuring the maximum segment size Bart Van Assche
2022-10-19 22:23 ` [PATCH 10/10] null_blk: " Bart Van Assche
2022-10-20 23:13 ` Damien Le Moal
2022-10-20 23:34 ` Bart Van Assche
2022-10-20 23:39 ` Damien Le Moal
2022-10-21 0:39 ` Bart Van Assche
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