[PATCH 0/5] blk-mq: Add a flag for reserved requests series

From: John Garry <john.garry@huawei.com>
To: <axboe@kernel.dk>, <damien.lemoal@opensource.wdc.com>,
	<bvanassche@acm.org>, <hch@lst.de>, <jejb@linux.ibm.com>,
	<martin.petersen@oracle.com>, <hare@suse.de>,
	<satishkh@cisco.com>, <sebaddel@cisco.com>, <kartilak@cisco.com>
Cc: <linux-rdma@vger.kernel.org>, <linux-mmc@vger.kernel.org>,
	<linux-nvme@lists.infradead.org>, <linux-s390@vger.kernel.org>,
	<linux-scsi@vger.kernel.org>, <mpi3mr-linuxdrv.pdl@broadcom.com>,
	<linux-block@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<nbd@other.debian.org>, John Garry <john.garry@huawei.com>
Subject: [PATCH 0/5] blk-mq: Add a flag for reserved requests series
Date: Fri, 17 Jun 2022 18:55:15 +0800	[thread overview]
Message-ID: <1655463320-241202-1-git-send-email-john.garry@huawei.com> (raw)

In [0] I included "blk-mq: Add a flag for reserved requests" to identify
if a request is 'reserved' for special handling. Doing this is easier than
passing a 'reserved' arg to the blk_mq_ops callbacks. Indeed, only 1x
timeout implementation or blk-mq iter function actually uses the
'reserved' arg (or 3x if you count SCSI core and FNIC SCSI driver). So
this series drops the 'reserved' arg for these timeout and iter functions.
Christoph suggested that I try to upstream now.

About the SCSI changes, I can leave them in place if people prefer.

Based on following:
c13794dbe936 (block/for-5.20/block) block: Directly use ida_alloc()/free()

[0] https://lore.kernel.org/linux-scsi/1654770559-101375-1-git-send-email-john.garry@huawei.com/T/#m22aa9f89e55835edc2e650d43f7e3219a3a1a324

John Garry (5):
  scsi: core: Remove reserved request time-out handling
  blk-mq: Add a flag for reserved requests
  blk-mq: Drop blk_mq_ops.timeout 'reserved' arg
  scsi: fnic: Drop reserved request handling
  blk-mq: Drop 'reserved' member of busy_tag_iter_fn

 block/blk-mq-debugfs.c              |  2 +-
 block/blk-mq-tag.c                  | 13 +++++--------
 block/blk-mq.c                      | 22 +++++++++++++---------
 block/bsg-lib.c                     |  2 +-
 drivers/block/mtip32xx/mtip32xx.c   | 11 +++++------
 drivers/block/nbd.c                 |  5 ++---
 drivers/block/null_blk/main.c       |  2 +-
 drivers/infiniband/ulp/srp/ib_srp.c |  3 +--
 drivers/mmc/core/queue.c            |  3 +--
 drivers/nvme/host/apple.c           |  3 +--
 drivers/nvme/host/core.c            |  2 +-
 drivers/nvme/host/fc.c              |  6 ++----
 drivers/nvme/host/nvme.h            |  2 +-
 drivers/nvme/host/pci.c             |  2 +-
 drivers/nvme/host/rdma.c            |  3 +--
 drivers/nvme/host/tcp.c             |  3 +--
 drivers/s390/block/dasd.c           |  2 +-
 drivers/s390/block/dasd_int.h       |  2 +-
 drivers/scsi/aacraid/comminit.c     |  2 +-
 drivers/scsi/aacraid/linit.c        |  2 +-
 drivers/scsi/fnic/fnic_scsi.c       | 14 ++++----------
 drivers/scsi/hosts.c                | 14 ++++++--------
 drivers/scsi/mpi3mr/mpi3mr_os.c     | 16 ++++------------
 drivers/scsi/scsi_lib.c             | 12 ++----------
 include/linux/blk-mq.h              | 10 ++++++++--
 include/scsi/scsi_host.h            |  2 +-
 26 files changed, 67 insertions(+), 93 deletions(-)

-- 
2.35.3