XLOG_VERSION_2
#define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2)
if (XFS_IS_CORRUPT(mp, h_version != XLOG_VERSION_2))
(rhead->h_version & cpu_to_be32(XLOG_VERSION_2))) {
if ((be32_to_cpu(rh->h_version) & XLOG_VERSION_2) &&