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for-5.2/io_uring-20190507

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Merge tag 'for-5.2/io_uring-20190507' of git://git.kernel.dk/linux-block

Pull io_uring updates from Jens Axboe:
 "Set of changes/improvements for io_uring. This contains:

   - Fix of a shadowed variable (Colin)

   - Add support for draining commands (me)

   - Add support for sync_file_range() (me)

   - Add eventfd support (me)

   - cpu_online() fix (Shenghui)

   - Removal of a redundant ->error assignment (Stefan)"

* tag 'for-5.2/io_uring-20190507' of git://git.kernel.dk/linux-block:
  io_uring: use cpu_online() to check p->sq_thread_cpu instead of cpu_possible()
  io_uring: fix shadowed variable ret return code being not checked
  req->error only used for iopoll
  io_uring: add support for eventfd notifications
  io_uring: add support for IORING_OP_SYNC_FILE_RANGE
  fs: add sync_file_range() helper
  io_uring: add support for marking commands as draining
This commit is contained in:
Linus Torvalds 2019-05-07 18:30:11 -07:00
commit 52ae2456d6
4 changed files with 267 additions and 70 deletions
Download patch file Download diff file Expand all files Collapse all files

5
include/uapi/linux/io_uring.h
View file

@ -26,6 +26,7 @@ struct io_uring_sqe {
__kernel_rwf_t rw_flags;
__u32 fsync_flags;
__u16 poll_events;
__u32 sync_range_flags;
};
__u64 user_data; /* data to be passed back at completion time */
union {
@ -38,6 +39,7 @@ struct io_uring_sqe {
* sqe->flags
*/
#define IOSQE_FIXED_FILE (1U << 0) /* use fixed fileset */
#define IOSQE_IO_DRAIN (1U << 1) /* issue after inflight IO */
/*
* io_uring_setup() flags
@ -54,6 +56,7 @@ struct io_uring_sqe {
#define IORING_OP_WRITE_FIXED 5
#define IORING_OP_POLL_ADD 6
#define IORING_OP_POLL_REMOVE 7
#define IORING_OP_SYNC_FILE_RANGE 8
/*
* sqe->fsync_flags
@ -133,5 +136,7 @@ struct io_uring_params {
#define IORING_UNREGISTER_BUFFERS 1
#define IORING_REGISTER_FILES 2
#define IORING_UNREGISTER_FILES 3
#define IORING_REGISTER_EVENTFD 4
#define IORING_UNREGISTER_EVENTFD 5
#endif