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| author |   Martin K. Petersen <martin.petersen@oracle.com> | 2010-09-10 01:22:07 -0400 |
|---|---|---|
| committer |   James Bottomley <James.Bottomley@suse.de> | 2010-09-17 13:07:55 -0400 |
| commit | 045d3fe766b01921e24e2d4178e011b3b09ad4d6 (patch) | |
| tree | ae0d69a0181def3bea7e7387d79e61ee943cc940 /drivers/scsi/sd.h | |
| parent | [SCSI] bfa: cleanup driver (diff) | |
| download | linux-dev-045d3fe766b01921e24e2d4178e011b3b09ad4d6.tar.xz linux-dev-045d3fe766b01921e24e2d4178e011b3b09ad4d6.zip | |
[SCSI] sd: Update thin provisioning support
Add support for the Thin Provisioning VPD page and use the TPU and TPWS
bits to switch between UNMAP and WRITE SAME(16) for discards. If no TP
VPD page is present we fall back to old scheme where the max descriptor
count combined with the max lba count are used trigger UNMAP.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/sd.h')
| -rw-r--r-- | drivers/scsi/sd.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index 315ce9d96b1f..a40730ee465c 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -63,6 +63,9 @@ struct scsi_disk { unsigned first_scan : 1; unsigned thin_provisioning : 1; unsigned unmap : 1; + unsigned tpws : 1; + unsigned tpu : 1; + unsigned tpvpd : 1; }; #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev) |