linux-stable.git/block/blk.h, branch v5.0

block: sum requests in the plug structure

2018-11-26T17:35:22+00:00

This isn't exactly the same as the previous count, as it includes
requests for all devices. But that really doesn't matter, if we have
more than the threshold (16) queued up, flush it. It's not worth it
to have an expensive list loop for this.

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

block: Remove bio->bi_ioc

2018-11-20T02:03:44+00:00

bio->bi_ioc is never set so always NULL. Remove references to it in
bio_disassociate_task() and in rq_ioc() and delete this field from
struct bio. With this change, rq_ioc() always returns
current->io_context without the need for a bio argument. Further
simplify the code and make it more readable by also removing this
helper, which also allows to simplify blk_mq_sched_assign_ioc() by
removing its bio argument.

Reviewed-by: Christoph Hellwig 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Adam Manzanares 
Signed-off-by: Damien Le Moal 
Signed-off-by: Jens Axboe

Merge tag 'v4.20-rc3' into for-4.21/block

2018-11-18T22:46:03+00:00

Merge in -rc3 to resolve a few conflicts, but also to get a few
important fixes that have gone into mainline since the block
4.21 branch was forked off (most notably the SCSI queue issue,
which is both a conflict AND needed fix).

Signed-off-by: Jens Axboe

block: remove queue_lockdep_assert_held

2018-11-15T19:13:21+00:00

The only remaining user unconditionally drops and reacquires the lock,
which means we really don't need any additional (conditional) annotation.

Reviewed-by: Hannes Reinecke 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

block: use atomic bitops for ->queue_flags

2018-11-15T19:13:19+00:00

->queue_flags is generally not set or cleared in the fast path, and also
generally set or cleared one flag at a time.  Make use of the normal
atomic bitops for it so that we don't need to take the queue_lock,
which is otherwise mostly unused in the core block layer now.

Reviewed-by: Hannes Reinecke 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

block: remove deadline __deadline manipulation helpers

2018-11-15T19:13:16+00:00

No users left since the removal of the legacy request interface, we can
remove all the magic bit stealing now and make it a normal field.

But use WRITE_ONCE/READ_ONCE on the new deadline field, given that we
don't seem to have any mechanism to guarantee a new value actually
gets seen by other threads.

Reviewed-by: Hannes Reinecke 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

block: remove req->timeout_list

2018-11-09T18:44:10+00:00

Unused now that the legacy request path is gone.

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

block: make sure discard bio is aligned with logical block size

2018-11-09T13:23:14+00:00

Obviously the created discard bio has to be aligned with logical block size.

This patch introduces the helper of bio_allowed_max_sectors() for
this purpose.

Cc: stable@vger.kernel.org
Cc: Mike Snitzer 
Cc: Christoph Hellwig 
Cc: Xiao Ni 
Cc: Mariusz Dabrowski 
Fixes: 744889b7cbb56a6 ("block: don't deal with discard limit in blkdev_issue_discard()")
Fixes: a22c4d7e34402cc ("block: re-add discard_granularity and alignment checks")
Reported-by: Rui Salvaterra 
Tested-by: Rui Salvaterra 
Signed-off-by: Ming Lei 
Signed-off-by: Jens Axboe

blk-mq: pass in request/bio flags to queue mapping

2018-11-07T20:44:59+00:00

Prep patch for being able to place request based not just on
CPU location, but also on the type of request.

Reviewed-by: Hannes Reinecke 
Reviewed-by: Keith Busch 
Signed-off-by: Jens Axboe

block: kill request slab cache

2018-11-07T20:42:33+00:00

Reviewed-by: Hannes Reinecke 
Tested-by: Ming Lei 
Reviewed-by: Omar Sandoval 
Signed-off-by: Jens Axboe