linux-kernel - [PATCH 6/6] io_uring: allow NOP opcode in IOPOLL mode

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Message-ID: <20220421091345.2115755-7-dylany@fb.com>
Date:   Thu, 21 Apr 2022 02:13:45 -0700
From:   Dylan Yudaken <dylany@...com>
To:     <io-uring@...r.kernel.org>
CC:     <axboe@...nel.dk>, <asml.silence@...il.com>,
        <linux-kernel@...r.kernel.org>, <kernel-team@...com>,
        Dylan Yudaken <dylany@...com>
Subject: [PATCH 6/6] io_uring: allow NOP opcode in IOPOLL mode

This is useful for tests so that IOPOLL can be tested without requiring
files. NOP is acceptable in IOPOLL as it always completes immediately.

Signed-off-by: Dylan Yudaken <dylany@...com>
---
 fs/io_uring.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index e46dc67c917c..a4e42ba708b4 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4526,11 +4526,6 @@ static int io_splice(struct io_kiocb *req, unsigned int issue_flags)
  */
 static int io_nop(struct io_kiocb *req, unsigned int issue_flags)
 {
-	struct io_ring_ctx *ctx = req->ctx;
-
-	if (unlikely(ctx->flags & IORING_SETUP_IOPOLL))
-		return -EINVAL;
-
 	__io_req_complete(req, issue_flags, 0, 0);
 	return 0;
 }
-- 
2.30.2