Merging upstream version 6.10.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 21 insertions, 5 deletions

diff --git a/io_uring/nop.c b/io_uring/nop.c
index 1a4e312dfe..a5bcf3d698 100644
--- a/io_uring/nop.c
+++ b/io_uring/nop.c
@@ -10,18 +10,34 @@
 #include "io_uring.h"
 #include "nop.h"
 
+struct io_nop {
+	/* NOTE: kiocb has the file as the first member, so don't do it here */
+	struct file     *file;
+	int             result;
+};
+
 int io_nop_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 {
-	if (READ_ONCE(sqe->rw_flags))
+	unsigned int flags;
+	struct io_nop *nop = io_kiocb_to_cmd(req, struct io_nop);
+
+	flags = READ_ONCE(sqe->nop_flags);
+	if (flags & ~IORING_NOP_INJECT_RESULT)
 		return -EINVAL;
+
+	if (flags & IORING_NOP_INJECT_RESULT)
+		nop->result = READ_ONCE(sqe->len);
+	else
+		nop->result = 0;
 	return 0;
 }
 
-/*
- * IORING_OP_NOP just posts a completion event, nothing else.
- */
 int io_nop(struct io_kiocb *req, unsigned int issue_flags)
 {
-	io_req_set_res(req, 0, 0);
+	struct io_nop *nop = io_kiocb_to_cmd(req, struct io_nop);
+
+	if (nop->result < 0)
+		req_set_fail(req);
+	io_req_set_res(req, nop->result, 0);
 	return IOU_OK;
 }