[PATCH 6/9] nilfs2: fix out-of-range warning

From: Arnd Bergmann <arnd@kernel.org>
To: linux-kernel@vger.kernel.org,
	Ryusuke Konishi <konishi.ryusuke@gmail.com>,
	Nathan Chancellor <nathan@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Bill Wendling <morbo@google.com>,
	Justin Stitt <justinstitt@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Philipp Stanner <pstanner@redhat.com>,
	Christian Brauner <brauner@kernel.org>,
	Jeff Layton <jlayton@kernel.org>,
	Thorsten Blum <thorsten.blum@toblux.com>,
	linux-nilfs@vger.kernel.org, llvm@lists.linux.dev
Subject: [PATCH 6/9] nilfs2: fix out-of-range warning
Date: Thu, 28 Mar 2024 15:30:44 +0100	[thread overview]
Message-ID: <20240328143051.1069575-7-arnd@kernel.org> (raw)
In-Reply-To: <20240328143051.1069575-1-arnd@kernel.org>

From: Arnd Bergmann <arnd@arndb.de>

clang-14 points out that v_size is always smaller than a 64KB
page size if that is configured by the CPU architecture:

fs/nilfs2/ioctl.c:63:19: error: result of comparison of constant 65536 with expression of type '__u16' (aka 'unsigned short') is always false [-Werror,-Wtautological-constant-out-of-range-compare]
        if (argv->v_size > PAGE_SIZE)
            ~~~~~~~~~~~~ ^ ~~~~~~~~~

This is ok, so just shut up that warning with a cast.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 fs/nilfs2/ioctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index f1a01c191cf5..8be471ce4f19 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -60,7 +60,7 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
 	if (argv->v_nmembs == 0)
 		return 0;
 
-	if (argv->v_size > PAGE_SIZE)
+	if ((size_t)argv->v_size > PAGE_SIZE)
 		return -EINVAL;
 
 	/*
-- 
2.39.2

