In parallels_check_duplicate() We use a bitmap for duplication detection.
This bitmap is not related to used_bmap field in BDRVParallelsState. Add
a comment about it to avoid confusion.
Signed-off-by: Alexander Ivanov <alexander.iva...@virtuozzo.com>
Reviewed-by: Denis V. Lunev <d...@openvz.org>
---
block/parallels.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/block/parallels.c b/block/parallels.c
index 9056dd6a11..66990925a8 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -842,7 +842,10 @@ parallels_check_duplicate(BlockDriverState *bs,
BdrvCheckResult *res,
bool fixed = false;
/*
- * Create a bitmap of used clusters.
+ * Create a bitmap of used clusters. Please note that this bitmap is not
+ * related to used_bmap field in BDRVParallelsState and is created only for
+ * local usage.
+ *
* If a bit is set, there is a BAT entry pointing to this cluster.
* Loop through the BAT entries, check bits relevant to an entry offset.
* If bit is set, this entry is duplicated. Otherwise set the bit.
--
2.40.1
