udf: Neaten logging output, use vsprintf extension %pV

Use %pV and remove a static buffer to save some text space and fix possible
issues when several processes call error reporting function in parallel. Also
change error level from KERN_CRIT to KERN_ERR.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 39e3f35..926228e 100644 (file)
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -75,8 +75,6 @@
 
 #define UDF_DEFAULT_BLOCKSIZE 2048
 
-static char error_buf[1024];
-
 /* These are the "meat" - everything else is stuffing */
 static int udf_fill_super(struct super_block *, void *, int);
 static void udf_put_super(struct super_block *);
@@ -2077,29 +2075,37 @@ error_out:
 void _udf_err(struct super_block *sb, const char *function,
              const char *fmt, ...)
 {
+       struct va_format vaf;
        va_list args;
 
-       if (!(sb->s_flags & MS_RDONLY)) {
-               /* mark sb error */
+       /* mark sb error */
+       if (!(sb->s_flags & MS_RDONLY))
                sb->s_dirt = 1;
-       }
+
        va_start(args, fmt);
-       vsnprintf(error_buf, sizeof(error_buf), fmt, args);
+
+       vaf.fmt = fmt;
+       vaf.va = &args;
+
+       pr_err("error (device %s): %s: %pV", sb->s_id, function, &vaf);
+
        va_end(args);
-       pr_crit("error (device %s): %s: %s",
-              sb->s_id, function, error_buf);
 }
 
 void _udf_warn(struct super_block *sb, const char *function,
               const char *fmt, ...)
 {
+       struct va_format vaf;
        va_list args;
 
        va_start(args, fmt);
-       vsnprintf(error_buf, sizeof(error_buf), fmt, args);
+
+       vaf.fmt = fmt;
+       vaf.va = &args;
+
+       pr_warn("warning (device %s): %s: %pV", sb->s_id, function, &vaf);
+
        va_end(args);
-       pr_warn("warning (device %s): %s: %s",
-              sb->s_id, function, error_buf);
 }
 
 static void udf_put_super(struct super_block *sb)