Now that the sg version 4 interface is supported:
- with ioctl(SG_IO) for synchronous/blocking use
- with ioctl(SG_IOSUBMIT) and ioctl(SG_IORECEIVE) for
async/non-blocking use
Plus new ioctl(SG_IOSUBMIT_V3) and ioctl(SG_IORECEIVE_V3)
potentially replace write() and read() for the sg
version 3 interface. Bump major driver version number
from 3 to 4.
The main new feature is the removal of the fixed 16 element
array of requests per file descriptor. It is replaced by
a xarray (eXtensible array) in their parent which is a
sg_fd object (i.e. a file descriptor). The sg_request
objects are not freed until the owning file descriptor is
closed; instead these objects are re-used when multiple
commands are sent to the same file descriptor.
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Signed-off-by: Douglas Gilbert <dgilbert@xxxxxxxxxxxx>
---
drivers/scsi/sg.c | 11 ++++++-----
include/uapi/scsi/sg.h | 4 ++--
2 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 0b72f7f8a71e..dc0f3c7f04d8 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -7,13 +7,14 @@
*
* Original driver (sg.c):
* Copyright (C) 1992 Lawrence Foard
- * Version 2 and 3 extensions to driver:
- * Copyright (C) 1998 - 2019 Douglas Gilbert
+ * Version 2, 3 and 4 extensions to driver:
+ * Copyright (C) 1998 - 2021 Douglas Gilbert
+ *
*/
-static int sg_version_num = 30901; /* [x]xyyzz where [x] empty when x=0 */
-#define SG_VERSION_STR "3.9.01" /* [x]x.[y]y.zz */
-static char *sg_version_date = "20190606";
+static int sg_version_num = 40012; /* [x]xyyzz where [x] empty when x=0 */
+#define SG_VERSION_STR "4.0.12" /* [x]x.[y]y.zz */
+static char *sg_version_date = "20210913";
#include <linux/module.h>
diff --git a/include/uapi/scsi/sg.h b/include/uapi/scsi/sg.h
index f0e3d274fade..c9b7d6dd57a7 100644
--- a/include/uapi/scsi/sg.h
+++ b/include/uapi/scsi/sg.h
@@ -12,9 +12,9 @@
* Copyright (C) 1992 Lawrence Foard
*
* Later extensions (versions 2, 3 and 4) to driver:
- * Copyright (C) 1998 - 2018 Douglas Gilbert
+ * Copyright (C) 1998 - 2021 Douglas Gilbert
*
- * Version 4.0.11 (20190502)
+ * Version 4.0.12 (20210111)
* This version is for Linux 4 and 5 series kernels.
*
* Documentation
--
2.25.1
