io_uring: avoid ring quiesce while registering restrictions and enabling rings

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>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 961866b..6ff9f67 100644 (file)
--- 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: