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-rw-r--r--include/block/block.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/block/block.h b/include/block/block.h
index 678fc60dc1..9ee9068aec 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -309,6 +309,10 @@ int bdrv_get_flags(BlockDriverState *bs);
int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf, int nb_sectors);
int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
+void bdrv_round_to_clusters(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors,
+ int64_t *cluster_sector_num,
+ int *cluster_nb_sectors);
const char *bdrv_get_encrypted_filename(BlockDriverState *bs);
void bdrv_get_backing_filename(BlockDriverState *bs,