[PATCH] ReiserFS bugfixes 7 of 13, please apply

From: Hans Reiser (reiser@namesys.com)
Date: Wed Apr 10 2002 - 09:53:42 EST


attached mail follows:


This patch is to fix journal replay bug where old code would replay
transactions with mount_id != mount_id recorded in journal header.
Fixed by Chris Mason.

--- linux-2.5.8-pre2/fs/reiserfs/journal.c.orig Mon Apr 8 15:31:43 2002
+++ linux-2.5.8-pre2/fs/reiserfs/journal.c Mon Apr 8 15:32:20 2002
@@ -1651,11 +1651,9 @@
 }
 static int journal_read(struct super_block *p_s_sb) {
   struct reiserfs_journal_desc *desc ;
- unsigned long last_flush_trans_id = 0 ;
   unsigned long oldest_trans_id = 0;
   unsigned long oldest_invalid_trans_id = 0 ;
   time_t start ;
- unsigned long last_flush_start = 0;
   unsigned long oldest_start = 0;
   unsigned long cur_dblock = 0 ;
   unsigned long newest_mount_id = 9 ;
@@ -1685,13 +1683,14 @@
   if (le32_to_cpu(jh->j_first_unflushed_offset) >= 0 &&
       le32_to_cpu(jh->j_first_unflushed_offset) < SB_ONDISK_JOURNAL_SIZE(p_s_sb) &&
       le32_to_cpu(jh->j_last_flush_trans_id) > 0) {
- last_flush_start = SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) +
+ oldest_start = SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) +
                        le32_to_cpu(jh->j_first_unflushed_offset) ;
- last_flush_trans_id = le32_to_cpu(jh->j_last_flush_trans_id) ;
+ oldest_trans_id = le32_to_cpu(jh->j_last_flush_trans_id) + 1;
+ newest_mount_id = le32_to_cpu(jh->j_mount_id);
     reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1153: found in "
                    "header: first_unflushed_offset %d, last_flushed_trans_id "
                    "%lu\n", le32_to_cpu(jh->j_first_unflushed_offset),
- last_flush_trans_id) ;
+ le32_to_cpu(jh->j_last_flush_trans_id)) ;
     valid_journal_header = 1 ;
 
     /* now, we try to read the first unflushed offset. If it is not valid,
@@ -1704,6 +1703,7 @@
       continue_replay = 0 ;
     }
     brelse(d_bh) ;
+ goto start_log_replay;
   }
 
   if (continue_replay && is_read_only(p_s_sb->s_dev)) {
@@ -1746,17 +1746,13 @@
                       "newest_mount_id to %d\n", le32_to_cpu(desc->j_mount_id));
       }
       cur_dblock += le32_to_cpu(desc->j_len) + 2 ;
- }
- else {
+ } else {
       cur_dblock++ ;
     }
     brelse(d_bh) ;
   }
- /* step three, starting at the oldest transaction, replay */
- if (last_flush_start > 0) {
- oldest_start = last_flush_start ;
- oldest_trans_id = last_flush_trans_id + 1 ;
- }
+
+start_log_replay:
   cur_dblock = oldest_start ;
   if (oldest_trans_id) {
     reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1206: Starting replay "

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Mon Apr 15 2002 - 22:00:16 EST