drop bio mode from null_blk and convert it to atomic queue limits v2

From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Subject: drop bio mode from null_blk and convert it to atomic queue limits v2
Date: Mon, 19 Feb 2024 07:29:44 +0100	[thread overview]
Message-ID: <20240219062949.3031759-1-hch@lst.de> (raw)

Hi Jens,

this series drops the obsolete bio mode from the null_blk driver and
then converts the driver to pass the queue limits to blk_mq_alloc_disk.

Note: this series sits on top of the "pass queue_limits to blk_alloc_disk
for simple drivers" series now.

Changes since v1:
 - add an incremental from Damien to make sure the zoned tunable are
   properly taken into account

Diffstat:
 main.c     |  502 +++++++++++++++----------------------------------------------
 null_blk.h |   19 --
 trace.h    |    5 
 zoned.c    |   25 +--
 4 files changed, 139 insertions(+), 412 deletions(-)