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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2015-05-04 21:54:18 -0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2015-05-05 09:30:18 -0400 |
| commit | d7b16e4f6283c6ec52b411aa6deb02ca4d030d20 (patch) | |
| tree | 2d4e778ad5f332eb067f04edc77bc2af3c15ea24 | |
| parent | 3b6eefc1c9381f4222de755c131c0718e9faac2a (diff) | |
| download | lwn-d7b16e4f6283c6ec52b411aa6deb02ca4d030d20.tar.gz lwn-d7b16e4f6283c6ec52b411aa6deb02ca4d030d20.zip | |
libata: Allow NCQ TRIM to be enabled or disabled with a module parameter
We have started seeing SSD firmware updates introduce support for queued
TRIM. Sadly, in most cases this support is completely untested and can
lead to either errors or data corruption.
Add two libata force flags that can be used to either enable or disable
queued TRIM support.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
| -rw-r--r-- | Documentation/kernel-parameters.txt | 2 | ||||
| -rw-r--r-- | drivers/ata/libata-core.c | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 01aa47d3b6ab..14a4be114cdc 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1755,6 +1755,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted. * [no]ncq: Turn on or off NCQ. + * [no]ncqtrim: Turn off queued DSM TRIM. + * nohrst, nosrst, norst: suppress hard, soft and both resets. diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index f6cb1f1b30b7..8c1f0742cc1a 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6472,6 +6472,8 @@ static int __init ata_parse_force_one(char **cur, { "3.0Gbps", .spd_limit = 2 }, { "noncq", .horkage_on = ATA_HORKAGE_NONCQ }, { "ncq", .horkage_off = ATA_HORKAGE_NONCQ }, + { "noncqtrim", .horkage_on = ATA_HORKAGE_NO_NCQ_TRIM }, + { "ncqtrim", .horkage_off = ATA_HORKAGE_NO_NCQ_TRIM }, { "dump_id", .horkage_on = ATA_HORKAGE_DUMP_ID }, { "pio0", .xfer_mask = 1 << (ATA_SHIFT_PIO + 0) }, { "pio1", .xfer_mask = 1 << (ATA_SHIFT_PIO + 1) }, |