[RFC,net-next,v3,14/29] io_uring: opcode independent fixed buf import

Commit Message

Pavel Begunkov June 28, 2022, 6:56 p.m. UTC

Extract an opcode independent helper from io_import_fixed for
initialising an iov_iter with a fixed buffer.

Signed-off-by: Pavel Begunkov <[e-mail]>
---
 fs/io_uring.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Patch

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 6a57a5ae18fb..e47629adf3f7 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3728,11 +3728,11 @@  static void kiocb_done(struct io_kiocb *req, ssize_t ret,
 	}
 }
 
-static int __io_import_fixed(struct io_kiocb *req, int rw, struct iov_iter *iter,
-			     struct io_mapped_ubuf *imu)
+static int __io_import_fixed(int rw, struct iov_iter *iter,
+			     struct io_mapped_ubuf *imu,
+			     u64 buf_addr, size_t len)
 {
-	size_t len = req->rw.len;
-	u64 buf_end, buf_addr = req->rw.addr;
+	u64 buf_end;
 	size_t offset;
 
 	if (unlikely(check_add_overflow(buf_addr, (u64)len, &buf_end)))
@@ -3802,7 +3802,7 @@  static int io_import_fixed(struct io_kiocb *req, int rw, struct iov_iter *iter,
 		imu = READ_ONCE(ctx->user_bufs[index]);
 		req->imu = imu;
 	}
-	return __io_import_fixed(req, rw, iter, imu);
+	return __io_import_fixed(rw, iter, imu, req->rw.addr, req->rw.len);
 }
 
 static int io_buffer_add_list(struct io_ring_ctx *ctx,