Commit 8c628207 authored by John Garry's avatar John Garry Committed by Martin K. Petersen
Browse files

scsi: scsi_debug: Reduce DEF_ATOMIC_WR_MAX_LENGTH 



The default atomic write max length in DEF_ATOMIC_WR_MAX_LENGTH is
excessively large.

For 512B LBS, we would get a 4MB max, but due to block layer atomic write
restrictions this is limited to 512KB.

Reduce DEF_ATOMIC_WR_MAX_LENGTH to a value which would be more realistic
(for a real device supporting atomic writes), 64KB.

Signed-off-by: default avatarJohn Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20250501100241.930071-1-john.g.garry@oracle.com


Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 0e937fd5

drivers/scsi/scsi_debug.c

+1 −1
Original line number Diff line number Diff line
@@ -162,7 +162,7 @@ static const char *sdebug_version_date = "20210520"; 
#define DEF_VPD_USE_HOSTNO 1

#define DEF_WRITESAME_LENGTH 0xFFFF

#define DEF_ATOMIC_WR 0

#define DEF_ATOMIC_WR_MAX_LENGTH 8192

#define DEF_ATOMIC_WR_MAX_LENGTH 128

#define DEF_ATOMIC_WR_ALIGN 2

#define DEF_ATOMIC_WR_GRAN 2

#define DEF_ATOMIC_WR_MAX_LENGTH_BNDRY (DEF_ATOMIC_WR_MAX_LENGTH)