From: Jens Axboe <axboe@kernel.dk> To: linux-fsdevel@vger.kernel.org, linux-aio@kvack.org, linux-block@vger.kernel.org, linux-arch@vger.kernel.org Cc: hch@lst.de, jmoyer@redhat.com, avi@scylladb.com Subject: [PATCHSET v2] io_uring IO interface Date: Wed, 9 Jan 2019 19:43:49 -0700 [thread overview] Message-ID: <20190110024404.25372-1-axboe@kernel.dk> (raw) Here's v2 of the io_uring interface. See the v1 posting for some more info: https://lore.kernel.org/linux-block/20190108165645.19311-1-axboe@kernel.dk/ The data structures changed, to improve the symmetry of the submission and completion side. The io_uring_iocb is now io_uring_sqe, but it otherwise remains the same as before. Ditto on the completion side, where io_uring_event is now io_uring_cqe. I've updated the fio io_uring test app, and the io_uring engine. The liburing git repo has also been adapted to the various changes since the v1 posting. As a reminder, the liburing git repo contains some helpers for doing IO without having to muck with the ring directly, setting up an io_uring context, etc. Clone that here: git://git.kernel.dk/liburing In terms of usage, there's also a small test app here: http://git.kernel.dk/cgit/fio/plain/t/io_uring.c and the liburing repo has a few test apps in test/ as well. Patches are aginst 5.0-rc1, but can also be found here: git://git.kernel.dk/linux-block io_uring Changes since v1: - Fail IORING_OP_{READ,WRITE}_FIXED if not configured - Fix ctx drop ref issue on failure to close ring_fd when sq thread/wq are in use - Move to separate Kconfig entry (CONFIG_IO_URING) - Add SPDX headers - Drop gcc ism of zero sized arrays - Rename io_uring_iocb -> io_uring_sqe - Rename io_uring_event -> io_uring_cqe - Drop needless io_event_ring and io_iocb_ring structures - Drop ctx->max_reqs, use ->sq_entries - Drop unused ->ring_lock - Drop io_ring_ctx slab cache - Fix state batched kiocb alloc failure to put ctx - Fix missing write ordering barrier when filling in the cqe - Drop io_req_init() - Various renames - Fix a few lines that were too long - Address other minor review comments - Fix IORING_SETUP_SQPOLL being set without IORING_SETUP_SQTHREAD - Drop IORING_SETUP_FIXEDBUFS, iovecs being non-NULL is enough - Fix error handling free of ctx in setup path - Change standard read/write commands to be iov based READV/WRITEV - Pass in struct sqe_submit instead of separate sqe/index everywhere - Fix reap of polled events on fops->release() - Lock uring for sq thread polling - Don't grab ->completion_lock for polled IO cqe filling - Fix ev_flags vs flags typo - Consolidate parts of the io_ring_ctx alignment Documentation/filesystems/vfs.txt | 3 + arch/x86/entry/syscalls/syscall_64.tbl | 2 + 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 | 1890 ++++++++++++++++++++++++ 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/syscalls.h | 5 + include/uapi/linux/io_uring.h | 114 ++ init/Kconfig | 8 + kernel/sys_ni.c | 2 + 20 files changed, 2163 insertions(+), 39 deletions(-) -- Jens Axboe
WARNING: multiple messages have this Message-ID (diff)
From: Jens Axboe <axboe@kernel.dk> To: linux-fsdevel@vger.kernel.org, linux-aio@kvack.org, linux-block@vger.kernel.org, linux-arch@vger.kernel.org Cc: hch@lst.de, jmoyer@redhat.com, avi@scylladb.com Subject: [PATCHSET v2] io_uring IO interface Date: Wed, 9 Jan 2019 19:43:49 -0700 [thread overview] Message-ID: <20190110024404.25372-1-axboe@kernel.dk> (raw) Here's v2 of the io_uring interface. See the v1 posting for some more info: https://lore.kernel.org/linux-block/20190108165645.19311-1-axboe@kernel.dk/ The data structures changed, to improve the symmetry of the submission and completion side. The io_uring_iocb is now io_uring_sqe, but it otherwise remains the same as before. Ditto on the completion side, where io_uring_event is now io_uring_cqe. I've updated the fio io_uring test app, and the io_uring engine. The liburing git repo has also been adapted to the various changes since the v1 posting. As a reminder, the liburing git repo contains some helpers for doing IO without having to muck with the ring directly, setting up an io_uring context, etc. Clone that here: git://git.kernel.dk/liburing In terms of usage, there's also a small test app here: http://git.kernel.dk/cgit/fio/plain/t/io_uring.c and the liburing repo has a few test apps in test/ as well. Patches are aginst 5.0-rc1, but can also be found here: git://git.kernel.dk/linux-block io_uring Changes since v1: - Fail IORING_OP_{READ,WRITE}_FIXED if not configured - Fix ctx drop ref issue on failure to close ring_fd when sq thread/wq are in use - Move to separate Kconfig entry (CONFIG_IO_URING) - Add SPDX headers - Drop gcc ism of zero sized arrays - Rename io_uring_iocb -> io_uring_sqe - Rename io_uring_event -> io_uring_cqe - Drop needless io_event_ring and io_iocb_ring structures - Drop ctx->max_reqs, use ->sq_entries - Drop unused ->ring_lock - Drop io_ring_ctx slab cache - Fix state batched kiocb alloc failure to put ctx - Fix missing write ordering barrier when filling in the cqe - Drop io_req_init() - Various renames - Fix a few lines that were too long - Address other minor review comments - Fix IORING_SETUP_SQPOLL being set without IORING_SETUP_SQTHREAD - Drop IORING_SETUP_FIXEDBUFS, iovecs being non-NULL is enough - Fix error handling free of ctx in setup path - Change standard read/write commands to be iov based READV/WRITEV - Pass in struct sqe_submit instead of separate sqe/index everywhere - Fix reap of polled events on fops->release() - Lock uring for sq thread polling - Don't grab ->completion_lock for polled IO cqe filling - Fix ev_flags vs flags typo - Consolidate parts of the io_ring_ctx alignment Documentation/filesystems/vfs.txt | 3 + arch/x86/entry/syscalls/syscall_64.tbl | 2 + 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 | 1890 ++++++++++++++++++++++++ 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/syscalls.h | 5 + include/uapi/linux/io_uring.h | 114 ++ init/Kconfig | 8 + kernel/sys_ni.c | 2 + 20 files changed, 2163 insertions(+), 39 deletions(-) -- Jens Axboe -- To unsubscribe, send a message with 'unsubscribe linux-aio' in the body to majordomo@kvack.org. For more info on Linux AIO, see: http://www.kvack.org/aio/ Don't email: <a href=mailto:"aart@kvack.org">aart@kvack.org</a>
next reply other threads:[~2019-01-10 2:44 UTC|newest] Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-01-10 2:43 Jens Axboe [this message] 2019-01-10 2:43 ` [PATCHSET v2] io_uring IO interface Jens Axboe 2019-01-10 2:43 ` [PATCH 01/15] fs: add an iopoll method to struct file_operations Jens Axboe 2019-01-10 2:43 ` Jens Axboe 2019-01-10 2:43 ` [PATCH 02/15] block: wire up block device iopoll method Jens Axboe 2019-01-10 2:43 ` Jens Axboe 2019-01-10 2:43 ` [PATCH 03/15] block: add bio_set_polled() helper Jens Axboe 2019-01-10 2:43 ` Jens Axboe 2019-01-10 2:43 ` [PATCH 04/15] iomap: wire up the iopoll method Jens Axboe 2019-01-10 2:43 ` Jens Axboe 2019-01-10 2:43 ` [PATCH 05/15] Add io_uring IO interface Jens Axboe 2019-01-10 2:43 ` Jens Axboe 2019-01-11 18:19 ` Martin K. Petersen 2019-01-11 18:19 ` Martin K. Petersen 2019-01-11 18:34 ` Jens Axboe 2019-01-11 18:34 ` Jens Axboe 2019-01-13 16:22 ` Jens Axboe 2019-01-13 16:22 ` Jens Axboe 2019-01-15 17:31 ` Martin K. Petersen 2019-01-15 17:31 ` Martin K. Petersen 2019-01-10 2:43 ` [PATCH 06/15] io_uring: support for IO polling Jens Axboe 2019-01-10 2:43 ` Jens Axboe 2019-01-10 2:43 ` [PATCH 07/15] io_uring: add submission side request cache Jens Axboe 2019-01-10 2:43 ` Jens Axboe 2019-01-10 2:43 ` [PATCH 08/15] fs: add fget_many() and fput_many() Jens Axboe 2019-01-10 2:43 ` Jens Axboe 2019-01-10 2:43 ` [PATCH 09/15] io_uring: use fget/fput_many() for file references Jens Axboe 2019-01-10 2:43 ` Jens Axboe 2019-01-10 2:43 ` [PATCH 10/15] io_uring: batch io_kiocb allocation Jens Axboe 2019-01-10 2:43 ` Jens Axboe 2019-01-10 2:44 ` [PATCH 11/15] block: implement bio helper to add iter bvec pages to bio Jens Axboe 2019-01-10 2:44 ` Jens Axboe 2019-01-10 2:44 ` [PATCH 12/15] io_uring: add support for pre-mapped user IO buffers Jens Axboe 2019-01-10 2:44 ` Jens Axboe 2019-01-10 2:44 ` [PATCH 13/15] io_uring: support kernel side submission Jens Axboe 2019-01-10 2:44 ` Jens Axboe 2019-01-10 2:44 ` [PATCH 14/15] io_uring: add submission polling Jens Axboe 2019-01-10 2:44 ` Jens Axboe 2019-01-10 2:44 ` [PATCH 15/15] io_uring: add io_uring_event cache hit information Jens Axboe 2019-01-10 2:44 ` Jens Axboe 2019-01-10 23:12 ` Jeff Moyer 2019-01-10 23:12 ` Jeff Moyer 2019-01-10 23:12 ` Jeff Moyer 2019-01-10 23:47 ` Jens Axboe 2019-01-10 23:47 ` Jens Axboe 2019-01-11 9:46 ` [PATCHSET v2] io_uring IO interface Roman Penyaev 2019-01-11 9:46 ` Roman Penyaev 2019-01-11 16:11 ` Ilya Dryomov 2019-01-11 16:11 ` Ilya Dryomov 2019-01-11 16:21 ` Christoph Hellwig 2019-01-11 16:21 ` Christoph Hellwig 2019-01-11 16:39 ` Roman Penyaev 2019-01-11 16:39 ` Roman Penyaev 2019-01-11 18:05 ` Jens Axboe 2019-01-11 18:05 ` Jens Axboe
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