fat: Convert fat_fs_error to use %pV

- convert fat_fs_error to use %pV
- be consequent and use "supor_block *sb" instead of "supor_block *s"
- use devise name in each message.

Signed-off-by: Alexey Fisher <bug-track@fisher-privat.net>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

fs/fat/fat.h

@@ -325,12 +325,12 @@ extern int fat_flush_inodes(struct super_block *sb, struct inode *i1,
 		            struct inode *i2);
 /* fat/misc.c */
 extern void
-__fat_fs_error(struct super_block *s, int report, const char *fmt, ...)
+__fat_fs_error(struct super_block *sb, int report, const char *fmt, ...)
 	__attribute__ ((format (printf, 3, 4))) __cold;
-#define fat_fs_error(s, fmt, args...)		\
-	__fat_fs_error(s, 1, fmt , ## args)
-#define fat_fs_error_ratelimit(s, fmt, args...) \
-	__fat_fs_error(s, __ratelimit(&MSDOS_SB(s)->ratelimit), fmt , ## args)
+#define fat_fs_error(sb, fmt, args...)		\
+	__fat_fs_error(sb, 1, fmt , ## args)
+#define fat_fs_error_ratelimit(sb, fmt, args...) \
+	__fat_fs_error(sb, __ratelimit(&MSDOS_SB(sb)->ratelimit), fmt , ## args)
 extern int fat_clusters_flush(struct super_block *sb);
 extern int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster);
 extern void fat_time_fat2unix(struct msdos_sb_info *sbi, struct timespec *ts,

fs/fat/misc.c

@@ -20,26 +20,26 @@
  * In case the file system is remounted read-only, it can be made writable
  * again by remounting it.
  */
-void __fat_fs_error(struct super_block *s, int report, const char *fmt, ...)
+void __fat_fs_error(struct super_block *sb, int report, const char *fmt, ...)
 {
-	struct fat_mount_options *opts = &MSDOS_SB(s)->options;
+	struct fat_mount_options *opts = &MSDOS_SB(sb)->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-fs (%s): error, %pV\n", sb->s_id, &vaf);
 		va_end(args);
-		printk("\n");
 	}
 
 	if (opts->errors == FAT_ERRORS_PANIC)
-		panic("FAT: fs panic from previous error\n");
-	else if (opts->errors == FAT_ERRORS_RO && !(s->s_flags & MS_RDONLY)) {
-		s->s_flags |= MS_RDONLY;
-		printk(KERN_ERR "FAT: Filesystem has been set read-only\n");
+		panic("FAT-fs (%s): fs panic from previous error\n", sb->s_id);
+	else if (opts->errors == FAT_ERRORS_RO && !(sb->s_flags & MS_RDONLY)) {
+		sb->s_flags |= MS_RDONLY;
+		printk(KERN_ERR "FAT-fs (%s): Filesystem has been "
+				"set read-only\n", sb->s_id);
 	}
 }
 EXPORT_SYMBOL_GPL(__fat_fs_error);