linux.git/drivers/block/Makefile, branch v6.12.80

rust: block: add rnull, Rust null_blk implementation

2024-06-14T13:45:04+00:00

This patch adds an initial version of the Rust null block driver.

Signed-off-by: Andreas Hindborg 
Reviewed-by: Benno Lossin 
Link: https://lore.kernel.org/r/20240611114551.228679-3-nmi@metaspace.dk
Signed-off-by: Jens Axboe

Revert "pktcdvd: remove driver."

2023-01-04T21:44:13+00:00

This reverts commit f40eb99897af665f11858dd7b56edcb62c3f3c67.

There are apparently still users out there of this driver. While we'd
love to remove it to ease the maintenance burden, let's reinstate it
for now until better (userspace) solutions can be developed.

Link: https://lore.kernel.org/lkml/20230104190115.ceglfefco475ev6c@pali/
Reported-by: Pali Rohár 
Signed-off-by: Jens Axboe

pktcdvd: remove driver.

2022-12-02T19:35:30+00:00

Way back in 2016 in commit 5a8b187c61e9 ("pktcdvd: mark as unmaintained
and deprecated") this driver was marked as "will be removed soon".  5
years seems long enough to have it stick around after that, so finally
remove the thing now.

Reported-by: Christoph Hellwig 
Cc: Jens Axboe 
Cc: Thomas Maier 
Cc: Peter Osterlund 
Cc: linux-block@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman 
Link: https://lore.kernel.org/r/20221202182758.1339039-1-gregkh@linuxfoundation.org
Signed-off-by: Jens Axboe

remove the sx8 block driver

2022-08-02T23:22:46+00:00

This driver is for fairly obscure hardware, and has only seen random
drive-by changes after the maintainer stopped working on it in 2005
(about a year and a half after it was introduced).  It has some
"interesting" block layer interactions, so let's just drop it unless
anyone complains.

Signed-off-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/20220721064102.1715460-1-hch@lst.de
[axboe: fix date typo, it was in 2005, not 2015]
Signed-off-by: Jens Axboe

ublk_drv: add io_uring based userspace block driver

2022-07-14T13:15:28+00:00

This is the driver part of userspace block driver(ublk driver), the other
part is userspace daemon part(ublksrv)[1].

The two parts communicate by io_uring's IORING_OP_URING_CMD with one
shared cmd buffer for storing io command, and the buffer is read only for
ublksrv, each io command is indexed by io request tag directly, and is
written by ublk driver.

For example, when one READ io request is submitted to ublk block driver,
ublk driver stores the io command into cmd buffer first, then completes
one IORING_OP_URING_CMD for notifying ublksrv, and the URING_CMD is issued
to ublk driver beforehand by ublksrv for getting notification of any new
io request, and each URING_CMD is associated with one io request by tag.

After ublksrv gets the io command, it translates and handles the ublk io
request, such as, for the ublk-loop target, ublksrv translates the request
into same request on another file or disk, like the kernel loop block
driver. In ublksrv's implementation, the io is still handled by io_uring,
and share same ring with IORING_OP_URING_CMD command. When the target io
request is done, the same IORING_OP_URING_CMD is issued to ublk driver for
both committing io request result and getting future notification of new
io request.

Another thing done by ublk driver is to copy data between kernel io
request and ublksrv's io buffer:

1) before ubsrv handles WRITE request, copy the request's data into
   ublksrv's userspace io buffer, so that ublksrv can handle the write
   request

2) after ubsrv handles READ request, copy ublksrv's userspace io buffer
   into this READ request, then ublk driver can complete the READ request

Zero copy may be switched if mm is ready to support it.

ublk driver doesn't handle any logic of the specific user space driver,
so it is small/simple enough.

[1] ublksrv

https://github.com/ming1/ubdsrv

Signed-off-by: Ming Lei 
Link: https://lore.kernel.org/r/20220713140711.97356-2-ming.lei@redhat.com
Signed-off-by: Jens Axboe

block: remove the rsxx driver

2021-12-16T17:57:04+00:00

This driver was for rare and shortlived high end enterprise hardware
and hasn't been maintained since 2014, which also means it never got
converted to use blk-mq.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

block: remove support for cryptoloop and the xor transfer

2021-10-22T14:34:58+00:00

Support for cyrptoloop has been officially marked broken and deprecated
in favor of dm-crypt (which supports the same broken algorithms if
needed) in Linux 2.6.4 (released in March 2004), and support for it has
been entirely removed from losetup in util-linux 2.23 (released in April
2013).  The XOR transfer has never been more than a toy to demonstrate
the transfer in the bad old times of crypto export restrictions.
Remove them as they have some nasty interactions with loop device life
times due to the iteration over all loop devices in
loop_unregister_transfer.

Suggested-by: Milan Broz 
Signed-off-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/20211019075639.2333969-1-hch@lst.de
Signed-off-by: Jens Axboe

drivers/block: remove the umem driver

2021-03-24T12:57:40+00:00

This removes the driver on the premise that it has been unused for a long
time. This is a better approach compared to changing untestable code
nobody cares about in the first place. Similarly, the umem.com website now
shows a mere Godaddy parking add.

Acked-by: NeilBrown 
Suggested-by: Christoph Hellwig 
Signed-off-by: Davidlohr Bueso 
Signed-off-by: Jens Axboe

xsysace: Remove SYSACE driver

2021-03-23T16:27:38+00:00

Sysace IP is no longer used on Xilinx PowerPC 405/440 and Microblaze
systems. The driver is not regularly tested and very likely not working for
quite a long time that's why remove it.

Signed-off-by: Michal Simek 
Signed-off-by: Jens Axboe

Merge tag 'mips_5.12_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2021-02-25T20:18:21+00:00

Pull more MIPS updates from Thomas Bogendoerfer:

 - added n64 block driver

 - fix for ubsan warnings

 - fix for bcm63xx platform

 - update of linux-mips mailinglist

* tag 'mips_5.12_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  arch: mips: update references to current linux-mips list
  mips: bmips: init clocks earlier
  vmlinux.lds.h: catch even more instrumentation symbols into .data
  n64: store dev instance into disk private data
  n64: cleanup n64cart_probe()
  n64: cosmetics changes
  n64: remove curly brackets
  n64: use sector SECTOR_SHIFT instead 512
  n64: use enums for reg
  n64: move module param at the top
  n64: move module info at the end
  n64: use pr_fmt to avoid duplicate string
  block: Add n64 cart driver