From ff16cfcfdaafa3c4287be92c6944fb8ea6dc75d1 Mon Sep 17 00:00:00 2001
From: Usama Arif <usama.arif@bytedance.com>
Date: Fri, 4 Feb 2022 14:51:16 +0000
Subject: [PATCH] io_uring: avoid ring quiesce while registering restrictions
 and enabling rings
Git-commit: ff16cfcfdaafa3c4287be92c6944fb8ea6dc75d1
Patch-mainline: v5.18-rc1
References: bsc#1205205

IORING_SETUP_R_DISABLED prevents submitting requests and so there will be
no requests until IORING_REGISTER_ENABLE_RINGS is called. And
IORING_REGISTER_RESTRICTIONS works only before
IORING_REGISTER_ENABLE_RINGS is called. Hence ring quiesce is not needed
for these opcodes.

Signed-off-by: Usama Arif <usama.arif@bytedance.com>
Link: https://lore.kernel.org/r/20220204145117.1186568-5-usama.arif@bytedance.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
---
 fs/io_uring.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 961866b24b4f..6ff9f67e2a1e 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -11021,6 +11021,8 @@ static bool io_register_op_must_quiesce(int op)
 	case IORING_REGISTER_PROBE:
 	case IORING_REGISTER_PERSONALITY:
 	case IORING_UNREGISTER_PERSONALITY:
+	case IORING_REGISTER_ENABLE_RINGS:
+	case IORING_REGISTER_RESTRICTIONS:
 	case IORING_REGISTER_FILES2:
 	case IORING_REGISTER_FILES_UPDATE2:
 	case IORING_REGISTER_BUFFERS2:
-- 
2.35.3