io_uring: use kmemdup instead of kmalloc and memcpy

Just clean up the code, no function changes.

Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 0dadbdbead0fbfef8b0f2373756b3254832ada53..42a684ef578ab710e93892aae1646c0f75c69492 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2098,13 +2098,11 @@ static int __io_queue_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
        if (ret == -EAGAIN && !(req->flags & REQ_F_NOWAIT)) {
                struct io_uring_sqe *sqe_copy;
 
-               sqe_copy = kmalloc(sizeof(*sqe_copy), GFP_KERNEL);
+               sqe_copy = kmemdup(s->sqe, sizeof(*sqe_copy), GFP_KERNEL);
                if (sqe_copy) {
                        struct async_list *list;
 
-                       memcpy(sqe_copy, s->sqe, sizeof(*sqe_copy));
                        s->sqe = sqe_copy;
-
                        memcpy(&req->submit, s, sizeof(*s));
                        list = io_async_list_from_sqe(ctx, s->sqe);
                        if (!io_add_to_prev_work(list, req)) {