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libata: add ATA_HORKAGE_NOTRIM

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commit 71d126fd28 upstream.

Some devices lose data on TRIM whether queued or not.  This patch adds
a horkage to disable TRIM.

tj: Collapsed unnecessary if() nesting.

Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arne Fitzenreiter
2015-07-15 13:54:36 +02:00
committed by Greg Kroah-Hartman
parent e77d2137a0
commit 54150eb4cd
3 changed files with 6 additions and 1 deletions
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include/linux/libata.h
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@ -432,6 +432,8 @@ enum {
ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
ATA_HORKAGE_NO_NCQ_LOG = (1 << 23), /* don't use NCQ for log read */
ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
/* DMA mask for user DMA control: User visible values; DO NOT
renumber */