If we already have mapped the necessary data for retry, then don't set
it up again. It's a pointless operation, and we leak the iovec if it's
a large (non-stack) vec.
Fixes: b63534c41e20 ("io_uring: re-issue block requests that failed because of resources")
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
---
fs/io_uring.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index a9ff6e47eb16..05670a615663 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2293,13 +2293,17 @@ static bool io_resubmit_prep(struct io_kiocb *req, int error)
goto end_req;
}
- ret = io_import_iovec(rw, req, &iovec, &iter, false);
- if (ret < 0)
- goto end_req;
- ret = io_setup_async_rw(req, iovec, inline_vecs, &iter, false);
- if (!ret)
+ if (!req->io) {
+ ret = io_import_iovec(rw, req, &iovec, &iter, false);
+ if (ret < 0)
+ goto end_req;
+ ret = io_setup_async_rw(req, iovec, inline_vecs, &iter, false);
+ if (!ret)
+ return true;
+ kfree(iovec);
+ } else {
return true;
- kfree(iovec);
+ }
end_req:
req_set_fail_links(req);
io_req_complete(req, ret);
--
2.28.0
