diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-07-27 10:30:40 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-07-27 08:50:50 -0600 |
| commit | bd1a3783dd749012134b142b52e5704f7c142897 (patch) | |
| tree | 110799c0b24e81dee72442579301f6acde7146df /io_uring/io_uring.h | |
| parent | 293402e564a7391f38541c7694e736f5fde20aea (diff) | |
| download | linux-bd1a3783dd749012134b142b52e5704f7c142897.tar.gz | |
io_uring: export req alloc from core
We want to do request allocation out of the core io_uring code, make the
allocation functions public for other io_uring parts.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0314fedd3a02a514210ba42d4720332538c65956.1658913593.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/io_uring.h')
| -rw-r--r-- | io_uring/io_uring.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h index cc81a9d1fd4d9..2f73f83af9604 100644 --- a/io_uring/io_uring.h +++ b/io_uring/io_uring.h @@ -75,6 +75,7 @@ void io_free_req(struct io_kiocb *req); void io_queue_next(struct io_kiocb *req); void __io_put_task(struct task_struct *task, int nr); void io_task_refs_refill(struct io_uring_task *tctx); +bool __io_alloc_req_refill(struct io_ring_ctx *ctx); bool io_match_task_safe(struct io_kiocb *head, struct task_struct *task, bool cancel_all); @@ -280,4 +281,24 @@ static inline void io_get_task_refs(int nr) io_task_refs_refill(tctx); } +static inline bool io_req_cache_empty(struct io_ring_ctx *ctx) +{ + return !ctx->submit_state.free_list.next; +} + +static inline bool io_alloc_req_refill(struct io_ring_ctx *ctx) +{ + if (unlikely(io_req_cache_empty(ctx))) + return __io_alloc_req_refill(ctx); + return true; +} + +static inline struct io_kiocb *io_alloc_req(struct io_ring_ctx *ctx) +{ + struct io_wq_work_node *node; + + node = wq_stack_extract(&ctx->submit_state.free_list); + return container_of(node, struct io_kiocb, comp_list); +} + #endif |