were at least a few missed cases where vp->v_{clean,dirty}blkhd were unprotected since the softdep/trickle sync merge.
default, as the copyright on the main file (ffs_softdep.c) is such that is has been put into gnusrc. options SOFTDEP will pull this in. This code also contains the trickle syncer. Bump version number to 1.4O