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authorDavid Milburn <dmilburn@redhat.com>2015-07-13 19:48:23 +0300
committerTejun Heo <tj@kernel.org>2015-07-15 18:47:24 +0300
commitaf34d637637eabaf49406eb35c948cd51ba262a6 (patch)
tree4dcfd80cdc49c3aa9fc9510e3edd93b97265be2a /include/linux/libata.h
parentcda57b1b05cf7b8b99ab4b732bea0b05b6c015cc (diff)
downloadlinux-af34d637637eabaf49406eb35c948cd51ba262a6.tar.xz
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 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> Cc: stable@vger.kernel.org # v3.19 and later Fixes: 34b48db66e08 ("block: remove artifical max_hw_sectors cap")
Diffstat (limited to 'include/linux/libata.h')
-rw-r--r--include/linux/libata.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 5c8bac6225a6..c9cfbcdb8d14 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -432,7 +432,7 @@ 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 */