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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>
This commit is contained in:
Jackie Liu 2019-09-18 10:37:52 +08:00 committed by Jens Axboe
parent 5277deaab9
commit 954dab193d
1 changed files with 1 additions and 3 deletions
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4
fs/io_uring.c
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@ -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)) { if (ret == -EAGAIN && !(req->flags & REQ_F_NOWAIT)) {
struct io_uring_sqe *sqe_copy; 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) { if (sqe_copy) {
struct async_list *list; struct async_list *list;
memcpy(sqe_copy, s->sqe, sizeof(*sqe_copy));
s->sqe = sqe_copy; s->sqe = sqe_copy;
memcpy(&req->submit, s, sizeof(*s)); memcpy(&req->submit, s, sizeof(*s));
list = io_async_list_from_sqe(ctx, s->sqe); list = io_async_list_from_sqe(ctx, s->sqe);
if (!io_add_to_prev_work(list, req)) { if (!io_add_to_prev_work(list, req)) {