linux-kernel - [PATCH v2 0/9] ublk: simplify NEED_GET

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Message-ID: <20250430225234.2676781-1-csander@purestorage.com>
Date: Wed, 30 Apr 2025 16:52:25 -0600
From: Caleb Sander Mateos <csander@...estorage.com>
To: Ming Lei <ming.lei@...hat.com>,
	Jens Axboe <axboe@...nel.dk>
Cc: Uday Shankar <ushankar@...estorage.com>,
	linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Caleb Sander Mateos <csander@...estorage.com>
Subject: [PATCH v2 0/9] ublk: simplify NEED_GET_DATA handling and request lookup

Remove accesses to ublk_io's cmd field after the I/O request is posted to the
ublk server. This allows the cmd field to be overlapped with a pointer to the
struct request, avoiding several blk_mq_tag_to_rq() lookups.

Fix a couple of typos noticed along the way.

Caleb Sander Mateos (8):
  ublk: fix "immepdately" typo in comment
  ublk: remove misleading "ubq" in "ubq_complete_io_cmd()"
  ublk: take const ubq pointer in ublk_get_iod()
  ublk: don't log uring_cmd cmd_op in ublk_dispatch_req()
  ublk: factor out ublk_start_io() helper
  ublk: don't call ublk_dispatch_req() for NEED_GET_DATA
  ublk: check UBLK_IO_FLAG_OWNED_BY_SRV in ublk_abort_queue()
  ublk: store request pointer in ublk_io

Uday Shankar (1):
  ublk: factor out ublk_commit_and_fetch

 drivers/block/ublk_drv.c | 252 ++++++++++++++++++++-------------------
 1 file changed, 131 insertions(+), 121 deletions(-)

v2:
- Don't complete uring_cmd if ublk_map_io() returns 0 (Ming)
- Take const ubq pointers

-- 
2.45.2