This patch provides a generic device-mapper inplace compression
device. Originally written by Shaohua Li.
https://www.redhat.com/archives/dm-devel/2013-December/msg00143.html
I have optimized and hardened the code.
Testing:
---
This compression block device is tested in the following scen
This is a simple DM target supporting inplace compression. Its best
suited for SSD. The underlying disk must support 512B sector size.
The target only supports 4k sector size.
Disk layout:
|super|...meta...|..data...|
Store unit is 4k (a block). Super is 1 block, which stores meta and
data size
Hi, Jens,
Jens Axboe writes:
> I like the change, hate the naming. I'd prefer one of two things:
>
> - Add bio_endio_complete() instead. That name sucks too, the
> important part is flipping the __name() to have a trace
> version instead.
ITYM a notrace version. By default, we want tracing
Hi Binoy,
On Wed, Jan 18, 2017 at 11:40 AM, Binoy Jayan wrote:
> Currently, the iv generation algorithms are implemented in dm-crypt.c.
> The goal is to move these algorithms from the dm layer to the kernel
> crypto layer by implementing them as template ciphers so they can be
> implemented in h
On 01/18/2017 03:48 AM, Hannes Reinecke wrote:
> Nearly there.
> You're missing a 'blk_mq_start_hw_queues(q)' after
> blk_mq_unfreeze_queue(); without it the queue will stall after switching
> the scheduler.
Yes indeed, forgot that. Needed after the quiesce.
> Also what's quite suspicious is this
Currently, the iv generation algorithms are implemented in dm-crypt.c.
The goal is to move these algorithms from the dm layer to the kernel
crypto layer by implementing them as template ciphers so they can be
implemented in hardware for performance. As part of this patchset, the
iv-generation code
===
GENIV Template cipher
===
Currently, the iv generation algorithms are implemented in dm-crypt.c. The goal
is to move these algorithms from the
On 01/17/2017 02:00 PM, Jens Axboe wrote:
> On 01/17/2017 04:47 AM, Jens Axboe wrote:
>> On 01/17/2017 12:57 AM, Hannes Reinecke wrote:
>>> Hi Jens,
>>>
>>> I gave your latest patchset from
>>>
>>> git.kernel.dk/linux-block blk-mq-sched
>>>
>>> I see a kernel oops when shutting down:
>>>
>>> [ 2132
