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From: Jens Axboe <axboe@kernel.dk>
To: linux-aio@kvack.org, linux-block@vger.kernel.org,
	linux-man@vger.kernel.org, linux-api@vger.kernel.org
Cc: hch@lst.de, jmoyer@redhat.com, avi@scylladb.com
Subject: [PATCHSET v8] io_uring IO interface
Date: Mon, 28 Jan 2019 14:35:20 -0700	[thread overview]
Message-ID: <20190128213538.13486-1-axboe@kernel.dk> (raw)

Here's v8 of the io_uring interface. Various little fixes all over
the map, and addressing various review concerns.

No new features, but the io_uring_enter(2) system call grew arguments
for a sigset_t so we can support poll properly.

For a general introduction to this patchset, see previous postings or
the LWN writeup here:

https://lwn.net/Articles/776703/

No new changes in the liburing user side library, but as a reference,
you can clone that here:

git://git.kernel.dk/liburing

We're still missing a man page for io_uring_enter(2), but the two other
system calls are documented.

Patches are against 5.0-rc4, and can also be found in my io_uring branch
here:

git://git.kernel.dk/linux-block io_uring

Changes since v7:
- Rebase on v5.0-rc4
- Add grace period control for SQ poll
- Add IORING_ENTER_SQ_WAKEUP instead of overloading 'to_submit'
- Address various minor review comments
- Use in_compat_syscall() instead of storing it in the ctx
- Remove now unneeded compat system call
- Ensure nops appropriately serialize the cq ring
- Add sigset_t support for wait side of io_uring_enter(2)
- Stop using page_frag_free()
- Remove duplicate include
- Make sure sq thread and application can't stomp on each other
- Add array_index_nospec() limiter for p->sq_thread_cpu

 Documentation/filesystems/vfs.txt      |    3 +
 arch/x86/entry/syscalls/syscall_32.tbl |    3 +
 arch/x86/entry/syscalls/syscall_64.tbl |    3 +
 block/bio.c                            |   59 +-
 fs/Makefile                            |    1 +
 fs/block_dev.c                         |   19 +-
 fs/file.c                              |   15 +-
 fs/file_table.c                        |    9 +-
 fs/gfs2/file.c                         |    2 +
 fs/io_uring.c                          | 2550 ++++++++++++++++++++++++
 fs/iomap.c                             |   48 +-
 fs/xfs/xfs_file.c                      |    1 +
 include/linux/bio.h                    |   14 +
 include/linux/blk_types.h              |    1 +
 include/linux/file.h                   |    2 +
 include/linux/fs.h                     |    6 +-
 include/linux/iomap.h                  |    1 +
 include/linux/sched/user.h             |    2 +-
 include/linux/syscalls.h               |    8 +
 include/uapi/asm-generic/unistd.h      |    8 +-
 include/uapi/linux/io_uring.h          |  143 ++
 init/Kconfig                           |    9 +
 kernel/sys_ni.c                        |    3 +
 23 files changed, 2869 insertions(+), 41 deletions(-)

-- 
Jens Axboe



             reply	other threads:[~2019-01-28 21:35 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-28 21:35 Jens Axboe [this message]
2019-01-28 21:35 ` [PATCH 01/18] fs: add an iopoll method to struct file_operations Jens Axboe
2019-01-28 21:35 ` [PATCH 02/18] block: wire up block device iopoll method Jens Axboe
2019-01-28 21:35 ` [PATCH 03/18] block: add bio_set_polled() helper Jens Axboe
2019-01-28 21:35 ` [PATCH 04/18] iomap: wire up the iopoll method Jens Axboe
2019-01-28 21:35 ` [PATCH 05/18] Add io_uring IO interface Jens Axboe
2019-01-28 21:53   ` Jeff Moyer
2019-01-28 21:56     ` Jens Axboe
2019-01-28 22:32   ` Jann Horn
2019-01-28 23:46     ` Jens Axboe
2019-01-28 23:59       ` Jann Horn
2019-01-29  0:03         ` Jens Axboe
2019-01-29  0:31           ` Jens Axboe
2019-01-29  0:34             ` Jann Horn
2019-01-29  0:55               ` Jens Axboe
2019-01-29  0:58                 ` Jann Horn
2019-01-29  1:01                   ` Jens Axboe
2019-02-01 16:57         ` Matt Mullins
2019-02-01 17:04           ` Jann Horn
2019-02-01 17:23             ` Jann Horn
2019-02-01 18:05               ` Al Viro
2019-01-29  1:07   ` Jann Horn
2019-01-29  2:21     ` Jann Horn
2019-01-29  2:54       ` Jens Axboe
2019-01-29  3:46       ` Jens Axboe
2019-01-29 15:56         ` Jann Horn
2019-01-29 16:06           ` Jens Axboe
2019-01-29  2:21     ` Jens Axboe
2019-01-29  1:29   ` Jann Horn
2019-01-29  1:31     ` Jens Axboe
2019-01-29  1:32       ` Jann Horn
2019-01-29  2:23         ` Jens Axboe
2019-01-29  7:12   ` Bert Wesarg
2019-01-29 12:12   ` Florian Weimer
2019-01-29 13:35     ` Jens Axboe
2019-01-29 15:38       ` Jann Horn
2019-01-29 15:54         ` Jens Axboe
2019-01-29 16:55         ` Christoph Hellwig
2019-01-29 15:35   ` Jann Horn
2019-01-29 15:39     ` Jens Axboe
2019-01-28 21:35 ` [PATCH 06/18] io_uring: add fsync support Jens Axboe
2019-01-28 21:35 ` [PATCH 07/18] io_uring: support for IO polling Jens Axboe
2019-01-29 17:24   ` Christoph Hellwig
2019-01-29 18:31     ` Jens Axboe
2019-01-29 19:10       ` Jens Axboe
2019-01-29 20:35         ` Jeff Moyer
2019-01-29 20:37           ` Jens Axboe
2019-01-28 21:35 ` [PATCH 08/18] fs: add fget_many() and fput_many() Jens Axboe
2019-01-28 21:35 ` [PATCH 09/18] io_uring: use fget/fput_many() for file references Jens Axboe
2019-01-28 21:56   ` Jann Horn
2019-01-28 22:03     ` Jens Axboe
2019-01-28 21:35 ` [PATCH 10/18] io_uring: batch io_kiocb allocation Jens Axboe
2019-01-29 17:26   ` Christoph Hellwig
2019-01-29 18:14     ` Jens Axboe
2019-01-28 21:35 ` [PATCH 11/18] block: implement bio helper to add iter bvec pages to bio Jens Axboe
2019-01-28 21:35 ` [PATCH 12/18] io_uring: add support for pre-mapped user IO buffers Jens Axboe
2019-01-28 23:35   ` Jann Horn
2019-01-28 23:50     ` Jens Axboe
2019-01-29  0:36       ` Jann Horn
2019-01-29  1:25         ` Jens Axboe
2019-01-28 21:35 ` [PATCH 13/18] io_uring: add file set registration Jens Axboe
2019-01-29 16:36   ` Jann Horn
2019-01-29 18:13     ` Jens Axboe
2019-01-28 21:35 ` [PATCH 14/18] io_uring: add submission polling Jens Axboe
2019-01-28 21:35 ` [PATCH 15/18] io_uring: add io_kiocb ref count Jens Axboe
2019-01-29 17:26   ` Christoph Hellwig
2019-01-28 21:35 ` [PATCH 16/18] io_uring: add support for IORING_OP_POLL Jens Axboe
2019-01-28 21:35 ` [PATCH 17/18] io_uring: allow workqueue item to handle multiple buffered requests Jens Axboe
2019-01-28 21:35 ` [PATCH 18/18] io_uring: add io_uring_event cache hit information Jens Axboe

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