fs/ntfs3: Use _le variants of bitops functions

The functions from bitops.h already have _le variants so use them to
prevent invalid reads/writes of the bitmap on big endian systems.

Signed-off-by: Thomas Kühnel <[e-mail]>
Signed-off-by: Konstantin Komarov <[e-mail]>

fs/ntfs3/bitmap.c

···
 	while (wpos < wend) {
 		size_t free_len;
 		u32 free_bits, end;
-		u32 used = find_next_zero_bit(buf, wend, wpos);
+		u32 used = find_next_zero_bit_le(buf, wend, wpos);
 
 		if (used >= wend) {
 			if (*b_len < *prev_tail) {
···
 		 * Now we have a fragment [wpos, wend) staring with 0.
 		 */
 		end = wpos + to_alloc - *prev_tail;
-		free_bits = find_next_bit(buf, min(end, wend), wpos);
+		free_bits = find_next_bit_le(buf, min(end, wend), wpos);
 
 		free_len = *prev_tail + free_bits - wpos;
 
···
 			wbits = wnd->nbits - wbit;
 
 		do {
-			used = find_next_zero_bit(buf, wbits, wpos);
+			used = find_next_zero_bit_le(buf, wbits, wpos);
 
 			if (used > wpos && prev_tail) {
 				wnd_add_free_ext(wnd, wbit + wpos - prev_tail,
···
 				break;
 			}
 
-			frb = find_next_bit(buf, wbits, wpos);
+			frb = find_next_bit_le(buf, wbits, wpos);
 			if (frb >= wbits) {
 				/* Keep last free block. */
 				prev_tail += frb - wpos;
···
 		buf = (ulong *)bh->b_data;
 
 		for (; wbit < wbits; wbit++) {
-			if (!test_bit(wbit, buf)) {
+			if (!test_bit_le(wbit, buf)) {
 				if (!len)
 					lcn = lcn_wnd + wbit;
 				len += 1;

fs/ntfs3/fsntfs.c

···
 						 NULL, 0, NULL, NULL))
 					goto next;
 
-				__clear_bit(ir - MFT_REC_RESERVED,
+				__clear_bit_le(ir - MFT_REC_RESERVED,
 					    &sbi->mft.reserved_bitmap);
 			}
 		}
 
 		/* Scan 5 bits for zero. Bit 0 == MFT_REC_RESERVED */
-		zbit = find_next_zero_bit(&sbi->mft.reserved_bitmap,
+		zbit = find_next_zero_bit_le(&sbi->mft.reserved_bitmap,
 					  MFT_REC_FREE, MFT_REC_RESERVED);
 		if (zbit >= MFT_REC_FREE) {
 			sbi->mft.next_reserved = MFT_REC_FREE;
···
 	if (*rno >= MFT_REC_FREE)
 		wnd_set_used(wnd, *rno, 1);
 	else if (*rno >= MFT_REC_RESERVED && sbi->mft.reserved_bitmap_inited)
-		__set_bit(*rno - MFT_REC_RESERVED, &sbi->mft.reserved_bitmap);
+		__set_bit_le(*rno - MFT_REC_RESERVED, &sbi->mft.reserved_bitmap);
 
 out:
 	if (!mft)
···
 		else
 			wnd_set_free(wnd, rno, 1);
 	} else if (rno >= MFT_REC_RESERVED && sbi->mft.reserved_bitmap_inited) {
-		__clear_bit(rno - MFT_REC_RESERVED, &sbi->mft.reserved_bitmap);
+		__clear_bit_le(rno - MFT_REC_RESERVED, &sbi->mft.reserved_bitmap);
 	}
 
 	if (rno < wnd_zone_bit(wnd))

fs/ntfs3/index.c

···
 	if (err)
 		return err;
 
-	__set_bit(bit - bbuf.bit, bbuf.buf);
+	__set_bit_le(bit - bbuf.bit, bbuf.buf);
 
 	bmp_buf_put(&bbuf, true);
 
···
 	if (err)
 		return err;
 
-	__clear_bit(bit - bbuf.bit, bbuf.buf);
+	__clear_bit_le(bit - bbuf.bit, bbuf.buf);
 
 	bmp_buf_put(&bbuf, true);
 
···
 
 static bool scan_for_free(const ulong *buf, u32 bit, u32 bits, size_t *ret)
 {
-	size_t pos = find_next_zero_bit(buf, bits, bit);
+	size_t pos = find_next_zero_bit_le(buf, bits, bit);
 
 	if (pos >= bits)
 		return false;
···
 
 	if (!b->non_res) {
 		u32 nbits = 8 * le32_to_cpu(b->res.data_size);
-		size_t pos = find_next_zero_bit(resident_data(b), nbits, 0);
+		size_t pos = find_next_zero_bit_le(resident_data(b), nbits, 0);
 
 		if (pos < nbits)
 			*bit = pos;
···
 
 static bool scan_for_used(const ulong *buf, u32 bit, u32 bits, size_t *ret)
 {
-	size_t pos = find_next_bit(buf, bits, bit);
+	size_t pos = find_next_bit_le(buf, bits, bit);
 
 	if (pos >= bits)
 		return false;
···
 
 	if (!b->non_res) {
 		u32 nbits = le32_to_cpu(b->res.data_size) * 8;
-		size_t pos = find_next_bit(resident_data(b), nbits, from);
+		size_t pos = find_next_bit_le(resident_data(b), nbits, from);
 
 		if (pos < nbits)
 			*bit = pos;
···
 		if (bit >= nbits)
 			return 0;
 
-		pos = find_next_bit(bm, nbits, bit);
+		pos = find_next_bit_le(bm, nbits, bit);
 		if (pos < nbits)
 			return 0;
 	} else {