From d3122bf9aa4c974f5e2c0112f799757b3a2779da Mon Sep 17 00:00:00 2001
From: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Date: Fri, 12 Aug 2022 02:29:53 +0900
Subject: ata: libata-eh: Add missing command name
Add the missing command name for ATA_CMD_NCQ_NON_DATA to
ata_get_cmd_name().
Fixes: 661ce1f0c4a6 ("libata/libsas: Define ATA_CMD_NCQ_NON_DATA")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
---
drivers/ata/libata-eh.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index ef4508d72c02..7c128c89b454 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2122,6 +2122,7 @@ const char *ata_get_cmd_name(u8 command)
{ ATA_CMD_WRITE_QUEUED_FUA_EXT, "WRITE DMA QUEUED FUA EXT" },
{ ATA_CMD_FPDMA_READ, "READ FPDMA QUEUED" },
{ ATA_CMD_FPDMA_WRITE, "WRITE FPDMA QUEUED" },
+ { ATA_CMD_NCQ_NON_DATA, "NCQ NON-DATA" },
{ ATA_CMD_FPDMA_SEND, "SEND FPDMA QUEUED" },
{ ATA_CMD_FPDMA_RECV, "RECEIVE FPDMA QUEUED" },
{ ATA_CMD_PIO_READ, "READ SECTOR(S)" },
--
cgit v1.2.3
From a357f7b4583ebf81d19c95aef57497ae81c5f63c Mon Sep 17 00:00:00 2001
From: John Garry <john.garry@huawei.com>
Date: Wed, 17 Aug 2022 23:20:08 +0800
Subject: ata: libata: Set __ATA_BASE_SHT max_sectors
Commit 0568e6122574 ("ata: libata-scsi: cap ata_device->max_sectors
according to shost->max_sectors") inadvertently capped the max_sectors
value for some SATA disks to a value which is lower than we would want.
For a device which supports LBA48, we would previously have request queue
max_sectors_kb and max_hw_sectors_kb values of 1280 and 32767 respectively.
For AHCI controllers, the value chosen for shost max sectors comes from
the minimum of the SCSI host default max sectors in
SCSI_DEFAULT_MAX_SECTORS (1024) and the shost DMA device mapping limit.
This means that we would now set the max_sectors_kb and max_hw_sectors_kb
values for a disk which supports LBA48 at 512, ignoring DMA mapping limit.
As report by Oliver at [0], this caused a performance regression.
Fix by picking a large enough max sectors value for ATA host controllers
such that we don't needlessly reduce max_sectors_kb for LBA48 disks.
[0] https://lore.kernel.org/linux-ide/YvsGbidf3na5FpGb@xsang-OptiPlex-9020/T/#m22d9fc5ad15af66066dd9fecf3d50f1b1ef11da3
Fixes: 0568e6122574 ("ata: libata-scsi: cap ata_device->max_sectors according to shost->max_sectors")
Reported-by: Oliver Sang <oliver.sang@intel.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
---
include/linux/libata.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 0269ff114f5a..698032e5ef2d 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1382,7 +1382,8 @@ extern const struct attribute_group *ata_common_sdev_groups[];
.proc_name = drv_name, \
.slave_destroy = ata_scsi_slave_destroy, \
.bios_param = ata_std_bios_param, \
- .unlock_native_capacity = ata_scsi_unlock_native_capacity
+ .unlock_native_capacity = ata_scsi_unlock_native_capacity,\
+ .max_sectors = ATA_MAX_SECTORS_LBA48
#define ATA_SUBBASE_SHT(drv_name) \
__ATA_BASE_SHT(drv_name), \
--
cgit v1.2.3