GFS2_LOG_FLUSH_MIN_BLOCKS
unsigned int taboo_blocks = GFS2_LOG_FLUSH_MIN_BLOCKS;
reserved_blocks = GFS2_LOG_FLUSH_MIN_BLOCKS;
if (__gfs2_log_try_reserve(sdp, blks, GFS2_LOG_FLUSH_MIN_BLOCKS))
__gfs2_log_reserve(sdp, blks, GFS2_LOG_FLUSH_MIN_BLOCKS);
unsigned int reserved = GFS2_LOG_FLUSH_MIN_BLOCKS;
tr->tr_reserved = GFS2_LOG_FLUSH_MIN_BLOCKS;