411 mf_get(memfile_T *mfp, blocknr_T nr, int page_count)  in mf_get()  argument
415     if (nr >= mfp->mf_blocknr_max || nr <= mfp->mf_blocknr_min)  in mf_get()
421     hp = mf_find_hash(mfp, nr);  in mf_get()
424 	if (nr < 0 || nr >= mfp->mf_infile_count)   // can't be in the file  in mf_get()
438 	hp->bh_bnum = nr;  in mf_get()
702 mf_find_hash(memfile_T *mfp, blocknr_T nr)  in mf_find_hash()  argument
704     return (bhdr_T *)mf_hash_find(&mfp->mf_hash, nr);  in mf_find_hash()
976     blocknr_T	nr;	    // block nr which is being written  in mf_write()  local
1002 	nr = hp->bh_bnum;  in mf_write()
1003 	if (nr > mfp->mf_infile_count)		// beyond end of file  in mf_write()
1005 	    nr = mfp->mf_infile_count;  in mf_write()
1006 	    hp2 = mf_find_hash(mfp, nr);	// NULL caught below  in mf_write()
1011 	offset = (off_T)page_size * nr;  in mf_write()
1059 	if (nr + (blocknr_T)page_count > mfp->mf_infile_count)  in mf_write()
1060 	    mfp->mf_infile_count = nr + page_count;  in mf_write()
1061 	if (nr == hp->bh_bnum)		    // written the desired block  in mf_write()