ocfs2: Allow for debugging of transaction extends

The nastiest cases of transaction extends are also the rarest. We can expose
them more quickly at the expense of performance by going straight to the
journal_restart() in ocfs2_extend_trans(). Wrap things in OCFS2_DEBUG_FS so
that we only do this when "expensive debugging" is turned on.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index 7e5f7ce4761bed02343d0a01c75cced9bfec28a6..0e1250c2ef446ff6f0a21a98106fc489c0fec781 100644 (file)
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -193,11 +193,15 @@ int ocfs2_extend_trans(handle_t *handle, int nblocks)
 
        mlog(0, "Trying to extend transaction by %d blocks\n", nblocks);
 
+#ifdef OCFS2_DEBUG_FS
+       status = 1;
+#else
        status = journal_extend(handle, nblocks);
        if (status < 0) {
                mlog_errno(status);
                goto bail;
        }
+#endif
 
        if (status > 0) {
                mlog(0, "journal_extend failed, trying journal_restart\n");