linux-kernel - [PATCH 4.1 266/267] hpfs: hpfs_error: Remove static buffer, use vsprintf extension %pV instead

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Message-Id: <20150731194012.047637729@linuxfoundation.org>
Date:	Fri, 31 Jul 2015 12:41:57 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Joe Perches <joe@...ches.com>,
	Mikulas Patocka <mikulas@...bright.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 4.1 266/267] hpfs: hpfs_error: Remove static buffer, use vsprintf extension %pV instead

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Joe Perches <joe@...ches.com>

commit a28e4b2b18ccb90df402da3f21e1a83c9d4f8ec1 upstream.

Removing unnecessary static buffers is good.
Use the vsprintf %pV extension instead.

Signed-off-by: Joe Perches <joe@...ches.com>
Signed-off-by: Mikulas Patocka <mikulas@...bright.com>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/hpfs/super.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -52,17 +52,20 @@ static void unmark_dirty(struct super_bl
 }
 
 /* Filesystem error... */
-static char err_buf[1024];
-
 void hpfs_error(struct super_block *s, const char *fmt, ...)
 {
+	struct va_format vaf;
 	va_list args;
 
 	va_start(args, fmt);
-	vsnprintf(err_buf, sizeof(err_buf), fmt, args);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	pr_err("filesystem error: %pV", &vaf);
+
 	va_end(args);
 
-	pr_err("filesystem error: %s", err_buf);
 	if (!hpfs_sb(s)->sb_was_error) {
 		if (hpfs_sb(s)->sb_err == 2) {
 			pr_cont("; crashing the system because you wanted it\n");


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