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

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Message-ID: <alpine.DEB.2.00.1506281520570.29365@leontynka>
Date:	Sun, 28 Jun 2015 15:22:28 +0200 (CEST)
From:	Mikulas Patocka <mikulas@...bright.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH] hpfs: hpfs_error: Remove static buffer, use vsprintf extension
 %pV instead

From: Joe Perches <joe@...ches.com>
Date: Thu, 26 Mar 2015 20:47:10 -0700

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>
Cc: stable@...r.kernel.org      # v2.6.36+
---
 fs/hpfs/super.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

Index: linux-4.1/fs/hpfs/super.c
===================================================================
--- linux-4.1.orig/fs/hpfs/super.c	2015-06-22 21:28:15.000000000 +0200
+++ linux-4.1/fs/hpfs/super.c	2015-06-22 21:28:25.000000000 +0200
@@ -53,17 +53,20 @@ 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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