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From: Keith Busch <kbusch@meta.com>
To: <linux-block@vger.kernel.org>, <linux-nvme@lists.infradead.org>,
<linux-scsi@vger.kernel.org>, <io-uring@vger.kernel.org>
CC: <linux-fsdevel@vger.kernel.org>, <hch@lst.de>, <joshi.k@samsung.com>,
<javier.gonz@samsung.com>, <bvanassche@acm.org>,
Keith Busch
<kbusch@kernel.org>
Subject: [PATCHv9 0/7] write hints with nvme fdp, scsi streams
Date: Fri, 25 Oct 2024 14:36:38 -0700
Message-ID: <20241025213645.3464331-1-kbusch@meta.com>
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From: Keith Busch <kbusch@kernel.org>
A little something for everyone here.
Upfront, I really didn't get the feedback about setting different flags
for stream vs. temperature support. Who wants to use it, and where and
how is that information used?
Changes from v8:
Added reviews.
Removed an unused header.
Changed "hint" to "streams" in the commit logs.
Ability to split available hints that a partition can use.
Dropped all the generic filesystem changes that were defaulting to the
kiocb write_hint. They are unchanged, which having no functional
change was really the intention anyway, so let's just not change them.
The above means we don't need a special fop flag to indicate support
for the kiocb write_hint. Those filesystems that don't support it
simply don't read it.
Added the SCSI support since I had to read the spec anyway, and it is
just a one-line change.
Kanchan Joshi (2):
io_uring: enable per-io hinting capability
nvme: enable FDP support
Keith Busch (5):
block: use generic u16 for write hints
block: introduce max_write_hints queue limit
block: allow ability to limit partition write hints
block, fs: add write hint to kiocb
scsi: set permanent stream count in block limits
Documentation/ABI/stable/sysfs-block | 7 +++
block/bdev.c | 15 +++++
block/blk-settings.c | 3 +
block/blk-sysfs.c | 3 +
block/fops.c | 26 ++++++++-
block/partitions/core.c | 46 +++++++++++++++-
drivers/nvme/host/core.c | 82 ++++++++++++++++++++++++++++
drivers/nvme/host/nvme.h | 5 ++
drivers/scsi/sd.c | 2 +
include/linux/blk-mq.h | 3 +-
include/linux/blk_types.h | 4 +-
include/linux/blkdev.h | 12 ++++
include/linux/fs.h | 1 +
include/linux/nvme.h | 19 +++++++
include/uapi/linux/io_uring.h | 4 ++
io_uring/rw.c | 3 +-
16 files changed, 225 insertions(+), 10 deletions(-)
--=20
2.43.5