linux-kernel - Re: [PATCH 1/2] Idd fat_msg() to unified kernel messages for FAT fs.

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Date:	Tue, 09 Nov 2010 11:43:25 -0800
From:	Joe Perches <joe@...ches.com>
To:	Alexey Fisher <bug-track@...her-privat.net>
Cc:	linux-kernel@...r.kernel.org, hirofumi@...l.parknet.co.jp
Subject: Re: [PATCH 1/2] Idd fat_msg() to unified kernel messages for FAT
 fs.

On Tue, 2010-11-09 at 19:58 +0100, Alexey Fisher wrote:
> Add fat_msg() function to unify printkas. And use it
> to report mounts and remounts.
> 
> new dmesg looks like this:
> [ 6264.957109] FAT-fs (sdg1): Mounted. Opts: uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush
> [ 6402.175028] FAT-fs (sdg1): re-mounted. Opts: (null)
> 
> v2 - add prototype to fat.h;
>      úse %pV; rename prefix to level;

Hi again Alexey.

I think putting this function in misc.c is better
because __fat_fs_error is already in that file.

Patch 1 should just add the prototype and function
and maybe convert __fat_fs_error to use %pV.

Maybe the __fat_fs_error %pV conversion is a
separate patch.

The last patch should do the conversions to
fat_msg.

Perhaps add this to misc.c:

diff --git a/fs/fat/misc.c b/fs/fat/misc.c
index 970e682..b497918 100644
--- a/fs/fat/misc.c
+++ b/fs/fat/misc.c
@@ -24,15 +24,18 @@ void __fat_fs_error(struct super_block *s, int report, const char *fmt, ...)
 {
 	struct fat_mount_options *opts = &MSDOS_SB(s)->options;
 	va_list args;
+	struct va_format vaf;

 	if (report) {
-		printk(KERN_ERR "FAT: Filesystem error (dev %s)\n", s->s_id);
-
-		printk(KERN_ERR "    ");
 		va_start(args, fmt);
-		vprintk(fmt, args);
+
+		vaf.fmt = fmt;
+		vaf.va = &args;
+
+		printk(KERN_ERR "FAT: Filesystem error (dev %s): %pV\n",
+		       s->s_id, &vaf);
+
 		va_end(args);
-		printk("\n");
 	}

 	if (opts->errors == FAT_ERRORS_PANIC)

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