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Message-Id: <20210531140146.481553-1-glebfm@altlinux.org>
Date: Mon, 31 May 2021 17:01:46 +0300
From: Gleb Fotengauer-Malinovskiy <glebfm@...linux.org>
To: Andrew Morton <akpm@...ux-foundation.org>,
Peter Xu <peterx@...hat.com>,
Axel Rasmussen <axelrasmussen@...gle.com>,
Daniel Colascione <dancol@...gle.com>,
Lokesh Gidra <lokeshgidra@...gle.com>,
"linux-kernel@...r.kernel.org"@altlinux.org
Subject: [PATCH] userfaultfd: fix UFFDIO_CONTINUE ioctl request definition
This ioctl request writes to uffdio_continue structure which justifies
_IOC_WRITE flag.
See NOTEs in include/uapi/asm-generic/ioctl.h for more information.
Fixes: f619147104c8 ("userfaultfd: add UFFDIO_CONTINUE ioctl")
Signed-off-by: Gleb Fotengauer-Malinovskiy <glebfm@...linux.org>
---
include/uapi/linux/userfaultfd.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/uapi/linux/userfaultfd.h b/include/uapi/linux/userfaultfd.h
index bafbeb1a2624..650480f41f1d 100644
--- a/include/uapi/linux/userfaultfd.h
+++ b/include/uapi/linux/userfaultfd.h
@@ -80,8 +80,8 @@
struct uffdio_zeropage)
#define UFFDIO_WRITEPROTECT _IOWR(UFFDIO, _UFFDIO_WRITEPROTECT, \
struct uffdio_writeprotect)
-#define UFFDIO_CONTINUE _IOR(UFFDIO, _UFFDIO_CONTINUE, \
- struct uffdio_continue)
+#define UFFDIO_CONTINUE _IOWR(UFFDIO, _UFFDIO_CONTINUE, \
+ struct uffdio_continue)
/* read() structure */
struct uffd_msg {
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