code: plan9front

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ext4srv: fix/simplify ext4_bmap_bits_free

--- a/sys/src/cmd/ext4srv/ext4_bitmap.c

+++ b/sys/src/cmd/ext4srv/ext4_bitmap.c

@@ -8,15 +8,10 @@

 {

 	u32int i = sbit;

-	while (i & 7) {

-

-		if (!bcnt)

+	while(i & 7){

+		if(bcnt-- == 0)

 			return;

-

-		ext4_bmap_bit_clr(bmap, i);

-

-		bcnt--;

-		i++;

+		ext4_bmap_bit_clr(bmap, i++);

 	}

 	sbit = i;

 	bmap += sbit >> 3;

@@ -23,10 +18,10 @@

 	memset(bmap, 0, bcnt >> 3);

 	bmap += bcnt >> 3;

+	bcnt &= 7;

-	for (i = 0; i < bcnt; ++i) {

-		ext4_bmap_bit_clr(bmap, i);

-	}

+	while(bcnt > 0)

+		ext4_bmap_bit_clr(bmap, --bcnt);

 }

 int ext4_bmap_bit_find_clr(u8int *bmap, u32int sbit, u32int ebit,