--- linux-2.5.3-pre4.o/include/linux/reiserfs_fs_sb.h	Thu Jan 24 12:21:23 2002
+++ linux-2.5.3-pre4/include/linux/reiserfs_fs_sb.h	Thu Jan 24 12:53:45 2002
@@ -347,6 +347,8 @@
 				/* To be obsoleted soon by per buffer seals.. -Hans */
     atomic_t s_generation_counter; // increased by one every time the
     // tree gets re-balanced
+    unsigned long s_properties;    /* File system properties. Currently holds
+				     on-disk FS format */
     
     /* session statistics */
     int s_kmallocs;
@@ -368,7 +370,11 @@
     struct proc_dir_entry *procdir;
 };
 
+/* Definitions of reiserfs on-disk properties: */
+#define REISERFS_3_5 0
+#define REISERFS_3_6 1
 
+/* Mount options */
 #define NOTAIL 0  /* -o notail: no tails will be created in a session */
 #define REPLAYONLY 3 /* replay journal and return 0. Use by fsck */
 #define REISERFS_NOLOG 4      /* -o nolog: turn journalling off */
@@ -418,8 +424,8 @@
 #define dont_have_tails(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << NOTAIL))
 #define replay_only(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << REPLAYONLY))
 #define reiserfs_dont_log(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << REISERFS_NOLOG))
-#define old_format_only(s) ((SB_VERSION(s) != REISERFS_VERSION_2) \
-         && !((s)->u.reiserfs_sb.s_mount_opt & (1 << REISERFS_CONVERT)))
+#define old_format_only(s) ((s)->u.reiserfs_sb.s_properties & (1 << REISERFS_3_5))
+#define convert_reiserfs(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << REISERFS_CONVERT))
 
 
 void reiserfs_file_buffer (struct buffer_head * bh, int list);
--- linux-2.5.3-pre4.o/fs/reiserfs/procfs.c	Thu Jan 24 12:21:23 2002
+++ linux-2.5.3-pre4/fs/reiserfs/procfs.c	Thu Jan 24 12:53:45 2002
@@ -15,6 +15,7 @@
 #include <linux/sched.h>
 #include <asm/uaccess.h>
 #include <linux/reiserfs_fs.h>
+#include <linux/reiserfs_fs_sb.h>
 #include <linux/smp_lock.h>
 #include <linux/locks.h>
 #include <linux/init.h>
@@ -76,12 +77,21 @@
 {
 	int len = 0;
 	struct super_block *sb;
+	char *format;
     
 	sb = procinfo_prologue( to_kdev_t((int)data) );
 	if( sb == NULL )
 		return -ENOENT;
+	if ( sb->u.reiserfs_sb.s_properties & (1 << REISERFS_3_6) ) {
+		format = "3.6";
+	} else if ( sb->u.reiserfs_sb.s_properties & (1 << REISERFS_3_5) ) {
+		format = "3.5";
+	} else {
+		format = "unknown";
+	}
+
 	len += sprintf( &buffer[ len ], "%s format\twith checks %s\n",
-			old_format_only( sb ) ? "old" : "new",
+			format,
 #if defined( CONFIG_REISERFS_CHECK )
 			"on"
 #else
@@ -172,7 +182,7 @@
 			dont_have_tails( sb ) ? "NO_TAILS " : "TAILS ",
 			replay_only( sb ) ? "REPLAY_ONLY " : "",
 			reiserfs_dont_log( sb ) ? "DONT_LOG " : "LOG ",
-			old_format_only( sb ) ? "CONV " : "",
+			convert_reiserfs( sb ) ? "CONV " : "",
 
 			atomic_read( &r -> s_generation_counter ),
 			SF( s_kmallocs ),
--- linux-2.5.3-pre4.o/fs/reiserfs/super.c	Thu Jan 24 12:25:16 2002
+++ linux-2.5.3-pre4/fs/reiserfs/super.c	Thu Jan 24 12:53:45 2002
@@ -968,6 +968,7 @@
     unsigned long blocks;
     int jinit_done = 0 ;
     struct reiserfs_iget4_args args ;
+    struct reiserfs_super_block * rs;
     char *jdev_name;
 
     memset (&s->u.reiserfs_sb, 0, sizeof (struct reiserfs_sb_info));
@@ -1045,8 +1046,13 @@
       goto error ;
     }
 
+    rs = SB_DISK_SUPER_BLOCK (s);
+    if (is_reiserfs_3_5 (rs) || (is_reiserfs_jr (rs) && SB_VERSION (s) == REISERFS_VERSION_1))
+	set_bit(REISERFS_3_5, &(s->u.reiserfs_sb.s_properties));
+    else
+	set_bit(REISERFS_3_6, &(s->u.reiserfs_sb.s_properties));
+    
     if (!(s->s_flags & MS_RDONLY)) {
-	struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK (s);
 
 	journal_begin(&th, s, 1) ;
 	reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
@@ -1054,14 +1060,13 @@
         set_sb_umount_state( rs, REISERFS_ERROR_FS );
 	set_sb_fs_state (rs, 0);
 	
-	if (is_reiserfs_3_5 (rs) || (is_reiserfs_jr (rs) && SB_VERSION (s) == REISERFS_VERSION_1)) {
+	if (old_format_only(s)) {
 	  /* filesystem of format 3.5 either with standard or non-standard
 	     journal */       
-	  if (!old_format_only (s)) {
+	  if (convert_reiserfs (s)) {
 	    /* and -o conv is given */ 
 	    reiserfs_warning ("reiserfs: converting 3.5 filesystem to the 3.6 format\n") ;
 	    
-	    if (is_reiserfs_3_5 (rs))
 	      /* put magic string of 3.6 format. 2.2 will not be able to
 		 mount this filesystem anymore */
 	      memcpy (rs->s_v1.s_magic, reiserfs_3_6_magic_string, 
@@ -1069,17 +1074,13 @@
 	    
 	    set_sb_version(rs,REISERFS_VERSION_2);
 	    reiserfs_convert_objectid_map_v1(s) ;
+	    set_bit(REISERFS_3_6, &(s->u.reiserfs_sb.s_properties));
+	    clear_bit(REISERFS_3_5, &(s->u.reiserfs_sb.s_properties));
 	  } else {
 	    reiserfs_warning("reiserfs: using 3.5.x disk format\n") ;
-	    }
-	} else {
-	    // new format found
-	    set_bit (REISERFS_CONVERT, &(s->u.reiserfs_sb.s_mount_opt));
+	  }
 	}
 
-	// mark hash in super block: it could be unset. overwrite should be ok
-        set_sb_hash_function_code( rs, function2code(s->u.reiserfs_sb.s_hash_function ) );
-
 	journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
 	journal_end(&th, s, 1) ;
 	
@@ -1087,7 +1088,13 @@
 	finish_unfinished (s);
 
 	s->s_dirt = 0;
+    } else {
+	if ( old_format_only(s) ) {
+	    reiserfs_warning("reiserfs: using 3.5.x disk format\n") ;
+	}
     }
+    // mark hash in super block: it could be unset. overwrite should be ok
+    set_sb_hash_function_code( rs, function2code(s->u.reiserfs_sb.s_hash_function ) );
 
     reiserfs_proc_info_init( s );
     reiserfs_proc_register( s, "version", reiserfs_version_in_proc );

.