From 1ee43ba8d267b5e6729c45b8756263f69c2978cc Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Thu, 18 Feb 2021 18:29:46 +0000
Subject: [PATCH] io_uring: don't do async setup for links' heads
Now, as we can do async setup without holding an SQE, we can skip doing
io_req_defer_prep() for link heads, it will be tried to be executed
inline and follows all the rules of the non-linked requests.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
fs/io_uring.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 7d54b0abbb8283..45f78fd25ce29f 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -6820,9 +6820,6 @@ fail_req:
ctx->drain_next = 0;
}
if (req->flags & (REQ_F_LINK | REQ_F_HARDLINK)) {
- ret = io_req_defer_prep(req);
- if (unlikely(ret))
- req->flags |= REQ_F_FAIL_LINK;
link->head = req;
link->last = req;
} else {
--
GitLab