This is a note to let you know that I've just added the patch titled
libata: add ATA_HORKAGE_NOTRIM
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
libata-add-ata_horkage_notrim.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 71d126fd28de2d4d9b7b2088dbccd7ca62fad6e0 Mon Sep 17 00:00:00 2001
From: Arne Fitzenreiter <[email protected]>
Date: Wed, 15 Jul 2015 13:54:36 +0200
Subject: libata: add ATA_HORKAGE_NOTRIM
From: Arne Fitzenreiter <[email protected]>
commit 71d126fd28de2d4d9b7b2088dbccd7ca62fad6e0 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 <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/ata/libata-scsi.c | 3 ++-
include/linux/libata.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2510,7 +2510,8 @@ static unsigned int ata_scsiop_read_cap(
rbuf[14] = (lowest_aligned >> 8) & 0x3f;
rbuf[15] = lowest_aligned;
- if (ata_id_has_trim(args->id)) {
+ if (ata_id_has_trim(args->id) &&
+ !(dev->horkage & ATA_HORKAGE_NOTRIM)) {
rbuf[14] |= 0x80; /* TPE */
if (ata_id_has_zero_after_trim(args->id))
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -428,6 +428,7 @@ enum {
ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */
ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
+ ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
/* DMA mask for user DMA control: User visible values; DO NOT
renumber */
Patches currently in stable-queue which might be from [email protected] are
queue-3.14/libata-force-disable-trim-for-supersspeed-s238.patch
queue-3.14/libata-add-ata_horkage_notrim.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
