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-rw-r--r--block/iscsi.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/block/iscsi.c b/block/iscsi.c
index 6aeeb9ec4f..1860f1bc91 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -499,14 +499,18 @@ iscsi_allocmap_update(IscsiLun *iscsilun, int64_t sector_num,
if (allocated) {
bitmap_set(iscsilun->allocmap, cl_num_expanded, nb_cls_expanded);
} else {
- bitmap_clear(iscsilun->allocmap, cl_num_shrunk, nb_cls_shrunk);
+ if (nb_cls_shrunk > 0) {
+ bitmap_clear(iscsilun->allocmap, cl_num_shrunk, nb_cls_shrunk);
+ }
}
if (iscsilun->allocmap_valid == NULL) {
return;
}
if (valid) {
- bitmap_set(iscsilun->allocmap_valid, cl_num_shrunk, nb_cls_shrunk);
+ if (nb_cls_shrunk > 0) {
+ bitmap_set(iscsilun->allocmap_valid, cl_num_shrunk, nb_cls_shrunk);
+ }
} else {
bitmap_clear(iscsilun->allocmap_valid, cl_num_expanded,
nb_cls_expanded);