From e0d7f73e63427521aabd7311a86fe90fd02897c0 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Mon, 25 Sep 2017 09:55:20 -0500 Subject: dirty-bitmap: Change bdrv_[re]set_dirty_bitmap() to use bytes Some of the callers were already scaling bytes to sectors; others can be easily converted to pass byte offsets, all in our shift towards a consistent byte interface everywhere. Making the change will also make it easier to write the hold-out callers to use byte rather than sectors for their iterations; it also makes it easier for a future dirty-bitmap patch to offload scaling over to the internal hbitmap. Although all callers happen to pass sector-aligned values, make the internal scaling robust to any sub-sector requests. Signed-off-by: Eric Blake Reviewed-by: John Snow Reviewed-by: Kevin Wolf Reviewed-by: Fam Zheng Signed-off-by: Kevin Wolf --- migration/block.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'migration') diff --git a/migration/block.c b/migration/block.c index f5bcf5505c..3282809583 100644 --- a/migration/block.c +++ b/migration/block.c @@ -334,7 +334,8 @@ static int mig_save_device_bulk(QEMUFile *f, BlkMigDevState *bmds) blk->aiocb = blk_aio_preadv(bb, cur_sector * BDRV_SECTOR_SIZE, &blk->qiov, 0, blk_mig_read_cb, blk); - bdrv_reset_dirty_bitmap(bmds->dirty_bitmap, cur_sector, nr_sectors); + bdrv_reset_dirty_bitmap(bmds->dirty_bitmap, cur_sector * BDRV_SECTOR_SIZE, + nr_sectors * BDRV_SECTOR_SIZE); aio_context_release(blk_get_aio_context(bmds->blk)); qemu_mutex_unlock_iothread(); @@ -542,7 +543,9 @@ static int mig_save_device_dirty(QEMUFile *f, BlkMigDevState *bmds, } else { nr_sectors = BDRV_SECTORS_PER_DIRTY_CHUNK; } - bdrv_reset_dirty_bitmap_locked(bmds->dirty_bitmap, sector, nr_sectors); + bdrv_reset_dirty_bitmap_locked(bmds->dirty_bitmap, + sector * BDRV_SECTOR_SIZE, + nr_sectors * BDRV_SECTOR_SIZE); bdrv_dirty_bitmap_unlock(bmds->dirty_bitmap); blk = g_new(BlkMigBlock, 1); -- cgit v1.2.3