linux-toradex.git/include/linux/blkdev.h, branch v5.12-rc8

block: remove the unused RQF_ALLOCED flag

2021-04-02T17:18:31+00:00

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

block: Drop leftover references to RQF_SORTED

2021-03-01T17:15:07+00:00

Commit a1ce35fa49852db60fc6e268038530be533c5b15 ("block: remove dead
elevator code") removed all users of RQF_SORTED. However it is still
defined, and there is one reference left to it (which in effect is
dead code). Clear it all up.

Signed-off-by: Jean Delvare 
Cc: Jens Axboe 
Cc: Ming Lei 
Cc: Omar Sandoval 
Cc: Hannes Reinecke 
Signed-off-by: Jens Axboe

Merge tag 'block-5.12-2021-02-27' of git://git.kernel.dk/linux-block

2021-02-28T19:23:38+00:00

Pull more block updates from Jens Axboe:
 "A few stragglers (and one due to me missing it originally), and fixes
  for changes in this merge window mostly. In particular:

   - blktrace cleanups (Chaitanya, Greg)

   - Kill dead blk_pm_* functions (Bart)

   - Fixes for the bio alloc changes (Christoph)

   - Fix for the partition changes (Christoph, Ming)

   - Fix for turning off iopoll with polled IO inflight (Jeffle)

   - nbd disconnect fix (Josef)

   - loop fsync error fix (Mauricio)

   - kyber update depth fix (Yang)

   - max_sectors alignment fix (Mikulas)

   - Add bio_max_segs helper (Matthew)"

* tag 'block-5.12-2021-02-27' of git://git.kernel.dk/linux-block: (21 commits)
  block: Add bio_max_segs
  blktrace: fix documentation for blk_fill_rw()
  block: memory allocations in bounce_clone_bio must not fail
  block: remove the gfp_mask argument to bounce_clone_bio
  block: fix bounce_clone_bio for passthrough bios
  block-crypto-fallback: use a bio_set for splitting bios
  block: fix logging on capacity change
  blk-settings: align max_sectors on "logical_block_size" boundary
  block: reopen the device in blkdev_reread_part
  block: don't skip empty device in in disk_uevent
  blktrace: remove debugfs file dentries from struct blk_trace
  nbd: handle device refs for DESTROY_ON_DISCONNECT properly
  kyber: introduce kyber_depth_updated()
  loop: fix I/O error on fsync() in detached loop devices
  block: fix potential IO hang when turning off io_poll
  block: get rid of the trace rq insert wrapper
  blktrace: fix blk_rq_merge documentation
  blktrace: fix blk_rq_issue documentation
  blktrace: add blk_fill_rwbs documentation comment
  block: remove superfluous param in blk_fill_rwbs()
  ...

Merge tag 'for-5.12/block-ipi-2021-02-21' of git://git.kernel.dk/linux-block

2021-02-22T18:53:05+00:00

Pull block IPI updates from Jens Axboe:
 "Avoid IRQ locking for the block IPI handling (Sebastian Andrzej
  Siewior)"

* tag 'for-5.12/block-ipi-2021-02-21' of git://git.kernel.dk/linux-block:
  blk-mq: Use llist_head for blk_cpu_done
  blk-mq: Always complete remote completions requests in softirq
  smp: Process pending softirqs in flush_smp_call_function_from_idle()

block: Remove unused blk_pm_*() function definitions

2021-02-22T13:33:48+00:00

Commit a1ce35fa4985 ("block: remove dead elevator code") removed the last
callers of blk_pm_requeue_request(), blk_pm_add_request() and
blk_pm_put_request(). Hence remove the definitions of these functions.
Removing these functions removes all users of the struct request nr_pending
member. Hence also remove 'nr_pending'. Note: 'nr_pending' is no longer
used since commit 7cedffec8e75 ("block: Make blk_get_request() block for
non-PM requests while suspended").

Cc: Alan Stern 
Cc: Christoph Hellwig 
Signed-off-by: Bart Van Assche 
Reviewed-by: Chaitanya Kulkarni 
Signed-off-by: Jens Axboe

blk-mq: Use llist_head for blk_cpu_done

2021-02-12T15:28:02+00:00

With llist_head it is possible to avoid the locking (the irq-off region)
when items are added. This makes it possible to add items on a remote
CPU without additional locking.
llist_add() returns true if the list was previously empty. This can be
used to invoke the SMP function call / raise sofirq only if the first
item was added (otherwise it is already pending).
This simplifies the code a little and reduces the IRQ-off regions.

blk_mq_raise_softirq() needs a preempt-disable section to ensure the
request is enqueued on the same CPU as the softirq is raised.
Some callers (USB-storage) invoke this path in preemptible context.

Reviewed-by: Christoph Hellwig 
Reviewed-by: Daniel Wagner 
Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Jens Axboe

block: introduce zone_write_granularity limit

2021-02-10T14:44:40+00:00

Per ZBC and ZAC specifications, host-managed SMR hard-disks mandate that
all writes into sequential write required zones be aligned to the device
physical block size. However, NVMe ZNS does not have this constraint and
allows write operations into sequential zones to be aligned to the
device logical block size. This inconsistency does not help with
software portability across device types.

To solve this, introduce the zone_write_granularity queue limit to
indicate the alignment constraint, in bytes, of write operations into
zones of a zoned block device. This new limit is exported as a
read-only sysfs queue attribute and the helper
blk_queue_zone_write_granularity() introduced for drivers to set this
limit.

The function blk_queue_set_zoned() is modified to set this new limit to
the device logical block size by default. NVMe ZNS devices as well as
zoned nullb devices use this default value as is. The scsi disk driver
is modified to execute the blk_queue_zone_write_granularity() helper to
set the zone write granularity of host-managed SMR disks to the disk
physical block size.

The accessor functions queue_zone_write_granularity() and
bdev_zone_write_granularity() are also introduced.

Signed-off-by: Damien Le Moal 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Martin K. Petersen 
Reviewed-by: Chaitanya Kulkarni 
Reviewed-by: Johannes Thumshirn 
Signed-off-by: Jens Axboe

block: use an on-stack bio in blkdev_issue_flush

2021-01-27T16:51:48+00:00

There is no point in allocating memory for a synchronous flush.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Chaitanya Kulkarni 
Acked-by: Damien Le Moal 
Signed-off-by: Jens Axboe

block: unexport truncate_bdev_range

2021-01-26T20:14:03+00:00

truncate_bdev_range is only used in always built-in block layer code,
so remove the export and the !CONFIG_BLOCK stub.

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

block: remove unnecessary argument from blk_execute_rq

2021-01-25T04:52:39+00:00

We can remove 'q' from blk_execute_rq as well after the previous change
in blk_execute_rq_nowait.

And more importantly it never really was needed to start with given
that we can trivial derive it from struct request.

Cc: linux-scsi@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org
Cc: linux-ide@vger.kernel.org
Cc: linux-mmc@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Cc: linux-nfs@vger.kernel.org
Acked-by: Ulf Hansson  # for mmc
Signed-off-by: Guoqing Jiang 
Signed-off-by: Jens Axboe