linux-kernel - [PATCH] fs: fix incorrect fmode

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Date:   Wed,  3 May 2023 07:22:08 +0800
From:   Min-Hua Chen <minhuadotchen@...il.com>
To:     Alexander Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <brauner@...nel.org>,
        Miklos Szeredi <miklos@...redi.hu>
Cc:     Min-Hua Chen <minhuadotchen@...il.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-unionfs@...r.kernel.org
Subject: [PATCH] fs: fix incorrect fmode_t casts

Use __FMODE_NONOTIFY instead of FMODE_NONOTIFY to fixes
the following sparce warnings:
fs/overlayfs/file.c:48:37: sparse: warning: restricted fmode_t degrades to integer
fs/overlayfs/file.c:128:13: sparse: warning: restricted fmode_t degrades to integer
fs/open.c:1159:21: sparse: warning: restricted fmode_t degrades to integer

Signed-off-by: Min-Hua Chen <minhuadotchen@...il.com>
---
 fs/open.c           | 2 +-
 fs/overlayfs/file.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/open.c b/fs/open.c
index 4478adcc4f3a..9d5edcedcbb7 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -1156,7 +1156,7 @@ inline struct open_how build_open_how(int flags, umode_t mode)
 inline int build_open_flags(const struct open_how *how, struct open_flags *op)
 {
 	u64 flags = how->flags;
-	u64 strip = FMODE_NONOTIFY | O_CLOEXEC;
+	u64 strip = __FMODE_NONOTIFY | O_CLOEXEC;
 	int lookup_flags = 0;
 	int acc_mode = ACC_MODE(flags);
 
diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index 7c04f033aadd..0801917f932e 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -35,7 +35,7 @@ static char ovl_whatisit(struct inode *inode, struct inode *realinode)
 }
 
 /* No atime modification nor notify on underlying */
-#define OVL_OPEN_FLAGS (O_NOATIME | FMODE_NONOTIFY)
+#define OVL_OPEN_FLAGS (O_NOATIME | __FMODE_NONOTIFY)
 
 static struct file *ovl_open_realfile(const struct file *file,
 				      const struct path *realpath)
-- 
2.34.1