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From: Tom Yan <tom.ty89@gmail.com>
To: linux-scsi@vger.kernel.org, dgilbert@interlog.com,
	bvanassche@acm.org, gregkh@linuxfoundation.org
Cc: stern@rowland.harvard.edu, akinobu.mita@gmail.com, hch@lst.de,
	linux-api@vger.kernel.org, Tom Yan <tom.ty89@gmail.com>
Subject: [PATCH v2 2/4] scsi: sg: implement BLKSSZGET
Date: Sun,  6 Sep 2020 15:40:16 +0800	[thread overview]
Message-ID: <20200906074018.2370-2-tom.ty89@gmail.com> (raw)
In-Reply-To: <20200906074018.2370-1-tom.ty89@gmail.com>

Provide an ioctl to get the logical sector size so that the maximum
bytes per request can be derived.

Follow-up of the BLKSECTGET fix.

Signed-off-by: Tom Yan <tom.ty89@gmail.com>
---
 drivers/scsi/sg.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index e57831910228..0e3f084141a3 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1118,6 +1118,8 @@ sg_ioctl_common(struct file *filp, Sg_device *sdp, Sg_fd *sfp,
 		max_sectors = min_t(unsigned int, USHRT_MAX,
 				    queue_max_sectors(sdp->device->request_queue));
 		return put_user(max_sectors, ip);
+	case BLKSSZGET:
+		return put_user(queue_logical_block_size(sdp->device->request_queue), ip);
 	case BLKTRACESETUP:
 		return blk_trace_setup(sdp->device->request_queue,
 				       sdp->disk->disk_name,
-- 
2.28.0


  reply	other threads:[~2020-09-06  7:40 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-04  4:42 About BLKSECTGET in sg Tom Yan
2020-09-04 16:28 ` Douglas Gilbert
2020-09-04 19:21   ` Tom Yan
2020-09-04 20:05     ` [PATCH 1/4] scsi: sg: fix BLKSECTGET ioctl Tom Yan
2020-09-04 20:05       ` [PATCH 2/4] scsi: sg: implement BLKSSZGET Tom Yan
2020-09-05 18:37         ` Douglas Gilbert
2020-09-04 20:05       ` [PATCH 3/4] scsi: sg: use queue_logical_sector_size() in max_sectors_bytes() Tom Yan
2020-09-05 18:37         ` Douglas Gilbert
2020-09-04 20:05       ` [PATCH 4/4] block/scsi_ioctl.c: " Tom Yan
2020-09-05 18:37         ` Douglas Gilbert
2020-09-05 18:37       ` [PATCH 1/4] scsi: sg: fix BLKSECTGET ioctl Douglas Gilbert
2020-09-05 19:32       ` Bart Van Assche
2020-09-05 20:36         ` Douglas Gilbert
2020-09-06  1:19           ` Tom Yan
2020-09-06  1:25             ` [PATCH RESEND " Tom Yan
2020-09-06  1:25               ` [PATCH RESEND 2/4] scsi: sg: implement BLKSSZGET Tom Yan
2020-09-06  1:25               ` [PATCH RESEND 3/4] scsi: sg: use queue_logical_sector_size() in max_sectors_bytes() Tom Yan
2020-09-06  1:25               ` [PATCH RESEND 4/4] block/scsi_ioctl.c: " Tom Yan
2020-09-06  1:27             ` [PATCH RESEND 1/4] scsi: sg: fix BLKSECTGET ioctl Tom Yan
2020-09-06  1:27               ` [PATCH RESEND 2/4] scsi: sg: implement BLKSSZGET Tom Yan
2020-09-07  6:09                 ` Christoph Hellwig
2020-09-07  9:01                   ` Tom Yan
2020-09-08  8:42                     ` Christoph Hellwig
2020-09-10  1:59                       ` Tom Yan
2020-09-10  5:28                         ` Christoph Hellwig
2020-09-11  2:52                           ` Tom Yan
2020-09-11  6:48                             ` Christoph Hellwig
2020-09-11 17:52                               ` Douglas Gilbert
2020-09-11 21:33                                 ` Alan Stern
2020-09-16  5:47                               ` Tom Yan
2020-09-06  1:27               ` [PATCH RESEND 3/4] scsi: sg: use queue_logical_sector_size() in max_sectors_bytes() Tom Yan
2020-09-06  6:26                 ` Greg KH
2020-09-06  7:01                   ` Tom Yan
2020-09-06  7:40                     ` [PATCH v2 1/4] scsi: sg: fix BLKSECTGET ioctl Tom Yan
2020-09-06  7:40                       ` Tom Yan [this message]
2020-09-06  7:40                       ` [PATCH v2 3/4] scsi: sg: use queue_logical_sector_size() in max_sectors_bytes() Tom Yan
2020-09-06  7:40                       ` [PATCH v2 4/4] block/scsi_ioctl.c: " Tom Yan
2020-09-06  7:51                     ` [PATCH v3 1/4] scsi: sg: fix BLKSECTGET ioctl Tom Yan
2020-09-06  7:51                       ` [PATCH v3 2/4] scsi: sg: implement BLKSSZGET Tom Yan
2020-09-06  7:51                       ` [PATCH v3 3/4] scsi: sg: use queue_logical_sector_size() in max_sectors_bytes() Tom Yan
2020-09-06  7:51                       ` [PATCH v3 4/4] block/scsi_ioctl.c: " Tom Yan
2020-09-06  1:27               ` [PATCH RESEND " Tom Yan
2020-09-06  5:09             ` [PATCH 1/4] scsi: sg: fix BLKSECTGET ioctl Douglas Gilbert
2020-09-06  7:16               ` Tom Yan

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