| Message ID | 20190727033728.21134-19-dgilbert@interlog.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | sg: add v4 interface | expand |
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 51e28913699e..6cfe4dd9d248 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -12,9 +12,9 @@ * */ -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 = 40003; /* [x]xyyzz where [x] empty when x=0 */ +#define SG_VERSION_STR "4.0.03" /* [x]x.[y]y.zz */ +static char *sg_version_date = "20190612"; #include <linux/module.h>
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 two lists: one for active (inflight) requests and a free list. Also sg_requests objects are not freed until the owning file descriptor is closed; rather these objects are re-used when multiple commands are sent to the same file descriptor. Signed-off-by: Douglas Gilbert <dgilbert@interlog.com> --- drivers/scsi/sg.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)