diff options
Diffstat (limited to 'block.c')
| -rw-r--r-- | block.c | 17 |
1 files changed, 10 insertions, 7 deletions
@@ -2833,6 +2833,8 @@ BlockInfo *bdrv_query_info(BlockDriverState *bs) info->has_dirty = true; info->dirty = g_malloc0(sizeof(*info->dirty)); info->dirty->count = bdrv_get_dirty_count(bs) * BDRV_SECTOR_SIZE; + info->dirty->granularity = + ((int64_t) BDRV_SECTOR_SIZE << hbitmap_granularity(bs->dirty_bitmap)); } if (bs->drv) { @@ -4299,16 +4301,17 @@ bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov) return true; } -void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable) +void bdrv_set_dirty_tracking(BlockDriverState *bs, int granularity) { int64_t bitmap_size; - if (enable) { - if (!bs->dirty_bitmap) { - bitmap_size = (bdrv_getlength(bs) >> BDRV_SECTOR_BITS); - bs->dirty_bitmap = hbitmap_alloc(bitmap_size, - BDRV_LOG_SECTORS_PER_DIRTY_CHUNK); - } + assert((granularity & (granularity - 1)) == 0); + + if (granularity) { + granularity >>= BDRV_SECTOR_BITS; + assert(!bs->dirty_bitmap); + bitmap_size = (bdrv_getlength(bs) >> BDRV_SECTOR_BITS); + bs->dirty_bitmap = hbitmap_alloc(bitmap_size, ffs(granularity) - 1); } else { if (bs->dirty_bitmap) { hbitmap_free(bs->dirty_bitmap); |