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>

1 files changed, 1 insertions, 21 deletions

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 1d600a63643b..822819d0f607 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -852,18 +852,13 @@ static void io_flush_cached_locked_reqs(struct io_ring_ctx *ctx,
 	spin_unlock(&ctx->completion_lock);
 }
 
-static inline bool io_req_cache_empty(struct io_ring_ctx *ctx)
-{
-	return !ctx->submit_state.free_list.next;
-}
-
 /*
  * A request might get retired back into the request caches even before opcode
  * handlers and io_issue_sqe() are done with it, e.g. inline completion path.
  * Because of that, io_alloc_req() should be called only under ->uring_lock
  * and with extra caution to not get a request that is still worked on.
  */
-static __cold bool __io_alloc_req_refill(struct io_ring_ctx *ctx)
+__cold bool __io_alloc_req_refill(struct io_ring_ctx *ctx)
 	__must_hold(&ctx->uring_lock)
 {
 	gfp_t gfp = GFP_KERNEL | __GFP_NOWARN;
@@ -904,21 +899,6 @@ static __cold bool __io_alloc_req_refill(struct io_ring_ctx *ctx)
 	return true;
 }
 
-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);
-}
-
 static inline void io_dismantle_req(struct io_kiocb *req)
 {
 	unsigned int flags = req->flags;