linux-kernel - [PATCH 4/4] io_uring: kill NULL checks for submit state

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Date:   Sun, 21 Jun 2020 13:09:53 +0300
From:   Pavel Begunkov <asml.silence@...il.com>
To:     Jens Axboe <axboe@...nel.dk>, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 4/4] io_uring: kill NULL checks for submit state

After recent changes, io_submit_sqes() always passes valid submit state,
so kill leftovers checking it for NULL.

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
 fs/io_uring.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 676911260f60..0bcf819e9661 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1371,11 +1371,7 @@ static struct io_kiocb *io_alloc_req(struct io_ring_ctx *ctx,
 	gfp_t gfp = GFP_KERNEL | __GFP_NOWARN;
 	struct io_kiocb *req;
 
-	if (!state) {
-		req = kmem_cache_alloc(req_cachep, gfp);
-		if (unlikely(!req))
-			goto fallback;
-	} else if (!state->free_reqs) {
+	if (!state->free_reqs) {
 		size_t sz;
 		int ret;
 
-- 
2.24.0