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(parent: d413ff3) | patch
libata: Report zeroed read after TRIM and max discard size
authorMartin K. Petersen <martin.petersen@oracle.com>
Fri, 27 Nov 2009 03:46:03 +0000 (22:46 -0500)
committerJeff Garzik <jgarzik@redhat.com>
Thu, 3 Dec 2009 23:01:04 +0000 (18:01 -0500)
commite78db4dfb1355a895f7ea50133b702b55b8ed184
tree13052100a353857ff07dbb0a3c78fdc713e58bcbtree
parentd413ff3e2aa09a4ebef718dbc4be4356f879467fcommit | diff
libata: Report zeroed read after TRIM and max discard size

Our current TRIM payload is a single sector that can accommodate 64 *
65535 blocks being unmapped.  Report this value in the Block Limits
Maximum Unmap LBA count field.

If a storage device supports TRIM and the DRAT and RZAT bits are set,
report TPRZ=1 in Read Capacity(16).

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
drivers/ata/libata-scsi.c diff | blob | history
include/linux/ata.h diff | blob | history
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