Commit 1bacd264 authored by Jens Axboe's avatar Jens Axboe

io_uring: mark reissue requests with REQ_F_PARTIAL_IO

If we mark for reissue, we assume that the buffer will remain stable.
Hence if are using a provided buffer, we need to ensure that we stick
with it for the duration of that request.

This only affects block devices that use provided buffers, as those are
the only ones that get marked with REQ_F_REISSUE.
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 6436c770
......@@ -3437,7 +3437,7 @@ static bool __io_complete_rw_common(struct io_kiocb *req, long res)
if (unlikely(res != req->cqe.res)) {
if ((res == -EAGAIN || res == -EOPNOTSUPP) &&
io_rw_should_reissue(req)) {
req->flags |= REQ_F_REISSUE;
req->flags |= REQ_F_REISSUE | REQ_F_PARTIAL_IO;
return true;
}
req_set_fail(req);
......@@ -3487,7 +3487,7 @@ static void io_complete_rw_iopoll(struct kiocb *kiocb, long res)
kiocb_end_write(req);
if (unlikely(res != req->cqe.res)) {
if (res == -EAGAIN && io_rw_should_reissue(req)) {
req->flags |= REQ_F_REISSUE;
req->flags |= REQ_F_REISSUE | REQ_F_PARTIAL_IO;
return;
}
req->cqe.res = res;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment