On 10/18/2016 08:40 AM, Damien Le Moal wrote:
> From: Damien Le Moal
>
> Add the zoned queue limit to indicate the zoning model of a block device.
> Defined values are 0 (BLK_ZONED_NONE) for regular block devices,
> 1 (BLK_ZONED_HA) for host-aware zone block devices and 2 (BLK_ZONED_HM)
> for hos
From: Shaun Tancheff
Define REQ_OP_ZONE_REPORT and REQ_OP_ZONE_RESET for handling zones of
host-managed and host-aware zoned block devices. With with these two
new operations, the total number of operations defined reaches 8 and
still fits with the 3 bits definition of REQ_OP_BITS.
Signed-off-by
From: Hannes Reinecke
Implement zoned block device zone information reporting and reset.
Zone information are reported as struct blk_zone. This implementation
does not differentiate between host-aware and host-managed device
models and is valid for both. Two functions are provided:
blkdev_report_
From: Damien Le Moal
Add the zoned queue limit to indicate the zoning model of a block device.
Defined values are 0 (BLK_ZONED_NONE) for regular block devices,
1 (BLK_ZONED_HA) for host-aware zone block devices and 2 (BLK_ZONED_HM)
for host-managed zone block devices. The standards defined drive
This series introduces support for zoned block devices. It integrates
earlier submissions by Hannes Reinecke and Shaun Tancheff. Compared to the
previous series version, the code was significantly simplified by limiting
support to zoned devices satisfying the following conditions:
1) All zones of t
From: Hannes Reinecke
The queue limits already have a 'chunk_sectors' setting, so
we should be presenting it via sysfs.
Signed-off-by: Hannes Reinecke
[Damien: Updated Documentation/ABI/testing/sysfs-block]
Signed-off-by: Damien Le Moal
Reviewed-by: Christoph Hellwig
Reviewed-by: Martin K.
From: Hannes Reinecke
Signed-off-by: Hannes Reinecke
Signed-off-by: Damien Le Moal
Reviewed-by: Christoph Hellwig
Reviewed-by: Martin K. Petersen
Reviewed-by: Shaun Tancheff
Tested-by: Shaun Tancheff
---
block/blk-settings.c | 4
1 file changed, 4 insertions(+)
diff --git a/block/blk
From: Hannes Reinecke
Implement ZBC support functions to setup zoned disks, both
host-managed and host-aware models. Only zoned disks that satisfy
the following conditions are supported:
1) All zones are the same size, with the exception of an eventual
last smaller runt zone.
2) For host-manag
From: Shaun Tancheff
Adds the new BLKREPORTZONE and BLKRESETZONE ioctls for respectively
obtaining the zone configuration of a zoned block device and resetting
the write pointer of sequential zones of a zoned block device.
The BLKREPORTZONE ioctl maps directly to a single call of the function
bl
Not to compound upon this again. However if BFQ isn't suitable to
replace CFQ for high I/O workloads (I've yet to see 20k IOPS on any
reasonably sized SAN (SC4020 / v5000, etc)), can't we at-least default
BFQ to become the default I/O scheduler for people otherwise
requesting CFQ? Paolo has had a t
Remove annoying white space damage in pci.c.
Signed-off-by: Stephen Bates
---
drivers/nvme/host/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index a7c6e9d..e2b3243 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nv
This patch builds ATA commands with high priority if the iocontext of a process
is set to real time. The goal of the patch is to improve tail latencies of
workloads that use higher queue depths. This requires setting the iocontext
ioprio on the request when it is initialized
This patch has been
This patch checks to see if an ATA device supports NCQ command priorities.
If so and the user has specified an iocontext that indicates
IO_PRIO_CLASS_RT then we build a tf with a high priority command.
This is done to improve the tail latency of commands that are high
priority by passing priority
Add a sysfs entry to turn on priority information being passed
to a ATA device. By default this feature is turned off.
This patch depends on ata: Enabling ATA Command Priorities
Signed-off-by: Adam Manzanares
---
drivers/ata/libahci.c | 1 +
drivers/ata/libata-core.c | 2 +-
drivers/ata/l
Patch adds an association between iocontext ioprio and the ioprio of a
request. This is done to enable request based drivers the ability to
act on priority information stored in the request. An example being
ATA devices that support command priorities. If the ATA driver discovers
that the device su
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Monday, October 17, 2016 9:21 AM
> To: Don Brace
> Cc: Johannes Thumshirn; Christoph Hellwig; martin.peter...@oracle.com;
> ax...@kernel.dk; linux-s...@vger.kernel.org; linux-block@vger.kernel.org
> Subject: Re: [P
Hi Don,
did you also have a chance to test the patch and verify that the
queues are properly set up with a smartpqi controller?
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> -Original Message-
> From: Johannes Thumshirn [mailto:jthumsh...@suse.de]
> Sent: Monday, October 17, 2016 2:34 AM
> To: Christoph Hellwig
> Cc: martin.peter...@oracle.com; Don Brace; ax...@kernel.dk; linux-
> s...@vger.kernel.org; linux-block@vger.kernel.org
> Subject: Re: [PATCH 3/3] s
On Mon, Oct 17, 2016 at 09:27:03AM +0200, Johannes Thumshirn wrote:
> Shouldn't this hunk go into the previous patch?
Yes, it should, thanks.
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On Sat, Oct 15, 2016 at 10:47:21AM +0200, Christoph Hellwig wrote:
> Which cleans up a lot of the MSI-X handling, and allows us to use the
> PCI IRQ layer provided vector mapping, which we can then expose to blk-mq.
>
> Signed-off-by: Christoph Hellwig
> ---
Reviewed-by: Johannes Thumshirn
--
On Sat, Oct 15, 2016 at 10:47:19AM +0200, Christoph Hellwig wrote:
> This will allow SCSI to have a single blk_mq_ops structure that either
> lets the LLDD map the queues to PCIe MSIx vectors or use the default.
>
> Signed-off-by: Christoph Hellwig
> ---
> block/blk-mq.h | 1 -
> include
On Sat, Oct 15, 2016 at 10:47:20AM +0200, Christoph Hellwig wrote:
> Just hand through the blk-mq map_queues method in the host template.
>
> Signed-off-by: Christoph Hellwig
> ---
> block/blk-mq-cpumap.c| 1 +
> drivers/scsi/scsi_lib.c | 10 ++
> include/scsi/scsi_host.h | 8
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