linux-kernel - [PATCH v3 2/5] pstore/blk: Move verify

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Date:   Wed, 16 Jun 2021 09:40:40 -0700
From:   Kees Cook <keescook@...omium.org>
To:     linux-kernel@...r.kernel.org
Cc:     Kees Cook <keescook@...omium.org>, Christoph Hellwig <hch@....de>,
        Al Viro <viro@...iv.linux.org.uk>, gmpy.liaowx@...il.com,
        Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>,
        Jonathan Corbet <corbet@....net>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-doc@...r.kernel.org, linux-mtd@...ts.infradead.org,
        linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH v3 2/5] pstore/blk: Move verify_size() macro out of function

There's no good reason for the verify_size macro to live inside the
function. Move it up with the check_size() macro and fix indenting.

Signed-off-by: Kees Cook <keescook@...omium.org>
---
 fs/pstore/blk.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/fs/pstore/blk.c b/fs/pstore/blk.c
index eca83820fb5d..7d8e5a1ddd5b 100644
--- a/fs/pstore/blk.c
+++ b/fs/pstore/blk.c
@@ -108,6 +108,17 @@ struct bdev_info {
 	_##name_;						\
 })
 
+#define verify_size(name, alignsize, enabled) {			\
+	long _##name_;						\
+	if (enabled)						\
+		_##name_ = check_size(name, alignsize);		\
+	else							\
+		_##name_ = 0;					\
+	/* Synchronize module parameters with resuls. */	\
+	name = _##name_ / 1024;					\
+	pstore_zone_info->name = _##name_;			\
+}
+
 static int __register_pstore_device(struct pstore_device_info *dev)
 {
 	int ret;
@@ -143,21 +154,10 @@ static int __register_pstore_device(struct pstore_device_info *dev)
 	if (!dev->flags)
 		dev->flags = UINT_MAX;
 
-#define verify_size(name, alignsize, enabled) {				\
-		long _##name_;						\
-		if (enabled)						\
-			_##name_ = check_size(name, alignsize);		\
-		else							\
-			_##name_ = 0;					\
-		name = _##name_ / 1024;					\
-		pstore_zone_info->name = _##name_;			\
-	}
-
 	verify_size(kmsg_size, 4096, dev->flags & PSTORE_FLAGS_DMESG);
 	verify_size(pmsg_size, 4096, dev->flags & PSTORE_FLAGS_PMSG);
 	verify_size(console_size, 4096, dev->flags & PSTORE_FLAGS_CONSOLE);
 	verify_size(ftrace_size, 4096, dev->flags & PSTORE_FLAGS_FTRACE);
-#undef verify_size
 
 	pstore_zone_info->total_size = dev->total_size;
 	pstore_zone_info->max_reason = max_reason;
-- 
2.25.1