From: Pavel Begunkov <asml.silence@gmail.com>
Date: Sat, 5 Sep 2020 21:45:46 +0000 (+0300)
Subject: io_uring: refactor io_req_map_rw()
X-Git-Tag: baikal/mips/sdk5.9~12522^2~37
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=8ef73a0b4e3fb460aaaf95506af57ee194b9c7fd;p=kernel.git

io_uring: refactor io_req_map_rw()

Set rw->free_iovec to @iovec, that gives an identical result and stresses
that @iovec param rw->free_iovec play the same role.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 6d8c2dcbfa081..bc7028d9e6f92 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3010,7 +3010,7 @@ static void io_req_map_rw(struct io_kiocb *req, const struct iovec *iovec,
 	struct io_async_rw *rw = &req->io->rw;
 
 	memcpy(&rw->iter, iter, sizeof(*iter));
-	rw->free_iovec = NULL;
+	rw->free_iovec = iovec;
 	rw->bytes_done = 0;
 	/* can only be fixed buffers, no need to do anything */
 	if (iter->type == ITER_BVEC)
@@ -3027,7 +3027,6 @@ static void io_req_map_rw(struct io_kiocb *req, const struct iovec *iovec,
 			memcpy(rw->fast_iov + iov_off, fast_iov + iov_off,
 			       sizeof(struct iovec) * iter->nr_segs);
 	} else {
-		rw->free_iovec = iovec;
 		req->flags |= REQ_F_NEED_CLEANUP;
 	}
 }