io_uring/uring_cmd: Allocate async data through generic helper

This abstracts away the cache details and simplify the code.

Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
Link: https://lore.kernel.org/r/20241216204615.759089-6-krisman@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: krisman

io_uring/uring_cmd.c

@@ -16,22 +16,6 @@
 #include "rsrc.h"
 #include "uring_cmd.h"
 
-static struct uring_cache *io_uring_async_get(struct io_kiocb *req)
-{
-	struct io_ring_ctx *ctx = req->ctx;
-	struct uring_cache *cache;
-
-	cache = io_alloc_cache_get(&ctx->uring_cache);
-	if (cache) {
-		req->flags |= REQ_F_ASYNC_DATA;
-		req->async_data = cache;
-		return cache;
-	}
-	if (!io_alloc_async_data(req))
-		return req->async_data;
-	return NULL;
-}
-
 static void io_req_uring_cleanup(struct io_kiocb *req, unsigned int issue_flags)
 {
 	struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd);
@@ -185,8 +169,8 @@ static int io_uring_cmd_prep_setup(struct io_kiocb *req,
 	struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd);
 	struct uring_cache *cache;
 
-	cache = io_uring_async_get(req);
-	if (unlikely(!cache))
+	cache = io_uring_alloc_async_data(&req->ctx->uring_cache, req, NULL);
+	if (!cache)
 		return -ENOMEM;
 
 	if (!(req->flags & REQ_F_FORCE_ASYNC)) {