diff options
| author | David Milburn <dmilburn@redhat.com> | 2015-07-13 11:48:23 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-03 09:29:04 -0700 |
| commit | 3b1c86a973f2e665c1697d965e459bf1b6713825 (patch) | |
| tree | b8d133bcac7f4a76b36f33d15d04620153c51f59 /include | |
| parent | 54150eb4cde1b758d788045d3ddc7ee336ce3d6d (diff) | |
libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit
commit af34d637637eabaf49406eb35c948cd51ba262a6 upstream.
Since no longer limiting max_sectors to BLK_DEF_MAX_SECTORS (commit 34b48db66e08),
data corruption may occur on ST380013AS drive configured on 82801JI (ICH10 Family)
SATA controller. This patch will allow the driver to limit max_sectors as before
# cat /sys/block/sdb/queue/max_sectors_kb
512
I was able to double the max_sectors_kb value up to 16384 on linux-4.2.0-rc2
before seeing corruption, but seems safer to use previous limit. Without this
patch max_sectors_kb will be 32767.
tj: Minor comment update.
Reported-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: David Milburn <dmilburn@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 34b48db66e08 ("block: remove artifical max_hw_sectors cap")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ata.h | 1 | ||||
| -rw-r--r-- | include/linux/libata.h | 2 |
2 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h index b666b773e111..533dbb6428f5 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -45,6 +45,7 @@ enum { ATA_SECT_SIZE = 512, ATA_MAX_SECTORS_128 = 128, ATA_MAX_SECTORS = 256, + ATA_MAX_SECTORS_1024 = 1024, ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */ ATA_MAX_SECTORS_TAPE = 65535, diff --git a/include/linux/libata.h b/include/linux/libata.h index f24e20ea9299..e0e33787c485 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -433,7 +433,7 @@ enum { 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 */ - + ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ /* DMA mask for user DMA control: User visible values; DO NOT renumber */ |