diff options
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index d4752e192ef9..2322583f9275 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3467,20 +3467,23 @@ static void __user *io_provided_buffer_select(struct io_kiocb *req, size_t *len, struct io_buffer_list *bl, unsigned int issue_flags) { - struct io_buffer *kbuf; + void __user *ret = ERR_PTR(-ENOBUFS); - if (list_empty(&bl->buf_list)) - return ERR_PTR(-ENOBUFS); + if (!list_empty(&bl->buf_list)) { + struct io_buffer *kbuf; + + kbuf = list_first_entry(&bl->buf_list, struct io_buffer, list); + list_del(&kbuf->list); + if (*len > kbuf->len) + *len = kbuf->len; + req->flags |= REQ_F_BUFFER_SELECTED; + req->kbuf = kbuf; + req->buf_index = kbuf->bid; + ret = u64_to_user_ptr(kbuf->addr); + } - kbuf = list_first_entry(&bl->buf_list, struct io_buffer, list); - list_del(&kbuf->list); - if (*len > kbuf->len) - *len = kbuf->len; - req->flags |= REQ_F_BUFFER_SELECTED; - req->kbuf = kbuf; - req->buf_index = kbuf->bid; io_ring_submit_unlock(req->ctx, issue_flags); - return u64_to_user_ptr(kbuf->addr); + return ret; } static void __user *io_buffer_select(struct io_kiocb *req, size_t *len, |