#include "lib9.h"#include "logfs.h"#include "local.h" longlogfsfindfreeblock(LogfsLowLevel *ll, AllocReason reason){	long b;	long total;	b = (*ll->findfreeblock)(ll, &total);	if(b < 0)		return b;	switch(reason) {	case AllocReasonReplace:		break;	case AllocReasonTransfer:		if(total <= Replacements)			return -1;		break;	case AllocReasonLogExtend:		if(total <= Replacements + Transfers)			return -1;		break;	case AllocReasonDataExtend:		if(total <= Replacements + Transfers + LogSlack)			return -1;		break;	}//print("allocated free block %ld\n", b);	return b;}