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for-5.17/io_uring-2022-01-11

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Merge tag 'for-5.17/io_uring-2022-01-11' of git://git.kernel.dk/linux-block

Pull io_uring updates from Jens Axboe:

 - Support for prioritized work completions (Hao)

 - Simplification of reissue (Pavel)

 - Add support for CQE skip (Pavel)

 - Memory leak fix going to 5.15-stable (Pavel)

 - Re-write of internal poll. This both cleans up that code, and gets us
   ready to fix the POLLFREE issue (Pavel)

 - Various cleanups (GuoYong, Pavel, Hao)

* tag 'for-5.17/io_uring-2022-01-11' of git://git.kernel.dk/linux-block: (31 commits)
  io_uring: fix not released cached task refs
  io_uring: remove redundant tab space
  io_uring: remove unused function parameter
  io_uring: use completion batching for poll rem/upd
  io_uring: single shot poll removal optimisation
  io_uring: poll rework
  io_uring: kill poll linking optimisation
  io_uring: move common poll bits
  io_uring: refactor poll update
  io_uring: remove double poll on poll update
  io_uring: code clean for some ctx usage
  io_uring: batch completion in prior_task_list
  io_uring: split io_req_complete_post() and add a helper
  io_uring: add helper for task work execution code
  io_uring: add a priority tw list for irq completion work
  io-wq: add helper to merge two wq_lists
  io_uring: reuse io_req_task_complete for timeouts
  io_uring: tweak iopoll CQE_SKIP event counting
  io_uring: simplify selected buf handling
  io_uring: move up io_put_kbuf() and io_put_rw_kbuf()
  ...
This commit is contained in:
Linus Torvalds 2022-01-12 10:20:35 -08:00
commit 42a7b4ed45
3 changed files with 638 additions and 580 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
fs/io-wq.h
View File

@ -52,6 +52,28 @@ static inline void wq_list_add_after(struct io_wq_work_node *node,
list->last = node;
}
/**
* wq_list_merge - merge the second list to the first one.
* @list0: the first list
* @list1: the second list
* Return the first node after mergence.
*/
static inline struct io_wq_work_node *wq_list_merge(struct io_wq_work_list *list0,
struct io_wq_work_list *list1)
{
struct io_wq_work_node *ret;
if (!list0->first) {
ret = list1->first;
} else {
ret = list0->first;
list0->last->next = list1->first;
}
INIT_WQ_LIST(list0);
INIT_WQ_LIST(list1);
return ret;
}
static inline void wq_list_add_tail(struct io_wq_work_node *node,
struct io_wq_work_list *list)
{

1192
fs/io_uring.c
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File diff suppressed because it is too large Load Diff

4
include/uapi/linux/io_uring.h
View File

@ -70,6 +70,7 @@ enum {
IOSQE_IO_HARDLINK_BIT,
IOSQE_ASYNC_BIT,
IOSQE_BUFFER_SELECT_BIT,
IOSQE_CQE_SKIP_SUCCESS_BIT,
};
/*
@ -87,6 +88,8 @@ enum {
#define IOSQE_ASYNC (1U << IOSQE_ASYNC_BIT)
/* select buffer from sqe->buf_group */
#define IOSQE_BUFFER_SELECT (1U << IOSQE_BUFFER_SELECT_BIT)
/* don't post CQE if request succeeded */
#define IOSQE_CQE_SKIP_SUCCESS (1U << IOSQE_CQE_SKIP_SUCCESS_BIT)
/*
* io_uring_setup() flags
@ -289,6 +292,7 @@ struct io_uring_params {
#define IORING_FEAT_EXT_ARG (1U << 8)
#define IORING_FEAT_NATIVE_WORKERS (1U << 9)
#define IORING_FEAT_RSRC_TAGS (1U << 10)
#define IORING_FEAT_CQE_SKIP (1U << 11)
/*
* io_uring_register(2) opcodes and arguments