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Commit af34d637 authored by David Milburn's avatar David Milburn Committed by Tejun Heo
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libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit

Since no longer limiting max_sectors to BLK_DEF_MAX_SECTORS (commit 34b48db6

),
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: default avatarJeff Moyer <jmoyer@redhat.com>
Signed-off-by: default avatarDavid Milburn <dmilburn@redhat.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org # v3.19 and later
Fixes: 34b48db6 ("block: remove artifical max_hw_sectors cap")
parent cda57b1b
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