ade28bdd40
bufobj lock. If b_bufobj is not NULL, then bufobj lock should be held when manipulating the flags. Not doing this sometimes leaves BV_BKGRDINPROG to be erronously set, causing softdep' getdirtybuf() to stuck indefinitely in "getbuf" sleep, waiting for background write to finish which is not actually performed. Add BO_LOCK() in the cases where it was missed. In collaboration with: pho Tested by: bz Reviewed by: jeff MFC after: 1 month