From c271c5c22b0a7ca45fda15f1f4d258bca36a5b94 Mon Sep 17 00:00:00 2001 From: Sunil Mushran Date: Tue, 5 Dec 2006 17:56:35 -0800 Subject: ocfs2: local mounts This allows users to format an ocfs2 file system with a special flag, OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT. When the file system sees this flag, it will not use any cluster services, nor will it require a cluster configuration, thus acting like a 'local' file system. Signed-off-by: Sunil Mushran Signed-off-by: Mark Fasheh --- fs/ocfs2/journal.c | 46 +++++++++++++++++++++++++++++++++------------- 1 file changed, 33 insertions(+), 13 deletions(-) (limited to 'fs/ocfs2/journal.c') diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index 1d7f4ab1e5e..825cb0ae1b4 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -144,8 +144,10 @@ handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) ocfs2_abort(osb->sb, "Detected aborted journal"); handle = ERR_PTR(-EROFS); } - } else - atomic_inc(&(osb->journal->j_num_trans)); + } else { + if (!ocfs2_mount_local(osb)) + atomic_inc(&(osb->journal->j_num_trans)); + } return handle; } @@ -507,9 +509,23 @@ void ocfs2_journal_shutdown(struct ocfs2_super *osb) BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); - status = ocfs2_journal_toggle_dirty(osb, 0); - if (status < 0) - mlog_errno(status); + if (ocfs2_mount_local(osb)) { + journal_lock_updates(journal->j_journal); + status = journal_flush(journal->j_journal); + journal_unlock_updates(journal->j_journal); + if (status < 0) + mlog_errno(status); + } + + if (status == 0) { + /* + * Do not toggle if flush was unsuccessful otherwise + * will leave dirty metadata in a "clean" journal + */ + status = ocfs2_journal_toggle_dirty(osb, 0); + if (status < 0) + mlog_errno(status); + } /* Shutdown the kernel journal system */ journal_destroy(journal->j_journal); @@ -549,7 +565,7 @@ static void ocfs2_clear_journal_error(struct super_block *sb, } } -int ocfs2_journal_load(struct ocfs2_journal *journal) +int ocfs2_journal_load(struct ocfs2_journal *journal, int local) { int status = 0; struct ocfs2_super *osb; @@ -576,14 +592,18 @@ int ocfs2_journal_load(struct ocfs2_journal *journal) } /* Launch the commit thread */ - osb->commit_task = kthread_run(ocfs2_commit_thread, osb, "ocfs2cmt"); - if (IS_ERR(osb->commit_task)) { - status = PTR_ERR(osb->commit_task); + if (!local) { + osb->commit_task = kthread_run(ocfs2_commit_thread, osb, + "ocfs2cmt"); + if (IS_ERR(osb->commit_task)) { + status = PTR_ERR(osb->commit_task); + osb->commit_task = NULL; + mlog(ML_ERROR, "unable to launch ocfs2commit thread, " + "error=%d", status); + goto done; + } + } else osb->commit_task = NULL; - mlog(ML_ERROR, "unable to launch ocfs2commit thread, error=%d", - status); - goto done; - } done: mlog_exit(status); -- cgit v1.2.3