diff options
| author | Bart Van Assche <bvanassche@acm.org> | 2024-01-30 22:48:37 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-02-27 03:37:26 +0100 |
| commit | 4f53138fffc2b18396859aa4ff3e7ef2b0839c2b (patch) | |
| tree | df53810b404ad229d6748ab5107b68866e6c2545 /drivers/scsi/sd.h | |
| parent | scsi: scsi_proto: Add structures and constants related to I/O groups and streams (diff) | |
| download | linux-4f53138fffc2b18396859aa4ff3e7ef2b0839c2b.tar.xz linux-4f53138fffc2b18396859aa4ff3e7ef2b0839c2b.zip | |
scsi: sd: Translate data lifetime information
Recently T10 standardized SBC constrained streams. This mechanism allows to
pass data lifetime information to SCSI devices in the group number field.
Add support for translating write hint information into a permanent stream
number in the sd driver. Use WRITE(10) instead of WRITE(6) if data lifetime
information is present because the WRITE(6) command does not have a GROUP
NUMBER field.
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240130214911.1863909-12-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/scsi/sd.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index e4539122f2a2..5c4285a582b2 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -125,6 +125,8 @@ struct scsi_disk { unsigned int physical_block_size; unsigned int max_medium_access_timeouts; unsigned int medium_access_timed_out; + /* number of permanent streams */ + u16 permanent_stream_count; u8 media_present; u8 write_prot; u8 protection_type;/* Data Integrity Field */ @@ -151,7 +153,7 @@ struct scsi_disk { unsigned urswrz : 1; unsigned security : 1; unsigned ignore_medium_access_errors : 1; - bool rscs : 1; /* reduced stream control support */ + unsigned rscs : 1; /* reduced stream control support */ }; #define to_scsi_disk(obj) container_of(obj, struct scsi_disk, disk_dev) |