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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-09-21 12:17:47 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-09-21 13:15:02 -0600 |
| commit | 47b4c68660752facfa6247b1fc9ca9d722b8b601 (patch) | |
| tree | d578f234cdbfaa7722112d92b222e08ee9dc7b76 /io_uring/rw.c | |
| parent | a47b255e90395bdb481975ab3d9e96fcf8b3165f (diff) | |
| download | lwn-47b4c68660752facfa6247b1fc9ca9d722b8b601.tar.gz lwn-47b4c68660752facfa6247b1fc9ca9d722b8b601.zip | |
io_uring/rw: don't lose partial IO result on fail
A partially done read/write may end up in io_req_complete_failed() and
loose the result, make sure we return the number of bytes processed.
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/05e0879c226bcd53b441bf92868eadd4bf04e2fc.1663668091.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/rw.c')
| -rw-r--r-- | io_uring/rw.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c index e50ba72091ac..59c92a4616b8 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -954,6 +954,14 @@ static void io_cqring_ev_posted_iopoll(struct io_ring_ctx *ctx) io_cqring_wake(ctx); } +void io_rw_fail(struct io_kiocb *req) +{ + int res; + + res = io_fixup_rw_res(req, req->cqe.res); + io_req_set_res(req, res, req->cqe.flags); +} + int io_do_iopoll(struct io_ring_ctx *ctx, bool force_nonspin) { struct io_wq_work_node *pos, *start, *prev; |