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[v5,2/7] scsi: sg: increase number of devices

Message ID 20230612165049.29440-3-mwilck@suse.com
State Superseded
Headers show
Series scsi: fixes for targets with many LUNs, and scsi_target_block rework | expand

Commit Message

Martin Wilck June 12, 2023, 4:50 p.m. UTC 
From: Hannes Reinecke <hare@suse.de>

Larger setups may need to allocate more than 32k sg devices, so
increase the number of devices to the full range of minor device
numbers.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/sg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 037f8c98a6d3..6c04cf941dac 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -71,7 +71,7 @@  static int sg_proc_init(void);
 
 #define SG_ALLOW_DIO_DEF 0
 
-#define SG_MAX_DEVS 32768
+#define SG_MAX_DEVS (1 << MINORBITS)
 
 /* SG_MAX_CDB_SIZE should be 260 (spc4r37 section 3.1.30) however the type
  * of sg_io_hdr::cmd_len can only represent 255. All SCSI commands greater