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jbd2: split updating of journal superblock and marking journal empty

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There are three case of updating journal superblock. In the first case, we want
to mark journal as empty (setting s_sequence to 0), in the second case we want
to update log tail, in the third case we want to update s_errno. Split these
cases into separate functions. It makes the code slightly more straightforward
and later patches will make the distinction even more important.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Jan Kara
2012-03-13 15:41:04 -04:00
committed by Theodore Ts'o
parent 31d4f3a2f3
commit 24bcc89c7e
5 changed files with 106 additions and 83 deletions
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fs/jbd2/commit.c
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@@ -340,7 +340,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
/* Do we need to erase the effects of a prior jbd2_journal_flush? */
if (journal->j_flags & JBD2_FLUSHED) {
jbd_debug(3, "super block updated\n");
jbd2_journal_update_superblock(journal, 1);
jbd2_journal_update_sb_log_tail(journal);
} else {
jbd_debug(3, "superblock not updated\n");
}