qemu/block/io.c

2172             int64_t aligned_offset = offset & ~(align - 1);
2176             ret = bdrv_aligned_pwritev(child, req, aligned_offset, write_bytes,
2397     int64_t aligned_offset, aligned_bytes;
2445     aligned_offset = QEMU_ALIGN_DOWN(offset, align);
2446     aligned_bytes = ROUND_UP(offset + bytes, align) - aligned_offset;
2471             bdrv_bsc_is_data(bs, aligned_offset, pnum))
2475             local_map = aligned_offset;
2477             ret = bs->drv->bdrv_co_block_status(bs, mode, aligned_offset,
2499                  * have passed (aligned_offset), and local_bs must be the node
2503                  * `local_map = aligned_offset` assignments above), and the
2508                 assert(local_map == aligned_offset);
2509                 bdrv_bsc_fill(bs, aligned_offset, *pnum);
2519         local_map = aligned_offset;
2532            align > offset - aligned_offset);
2539     *pnum -= offset - aligned_offset;
2544         local_map += offset - aligned_offset;