1 files changed, 17 insertions, 0 deletions
diff --git a/net/ceph/striper.c b/net/ceph/striper.c
index c36462dc86b7..3b3fa75d1189 100644
--- a/net/ceph/striper.c
+++ b/net/ceph/striper.c
@@ -259,3 +259,20 @@ int ceph_extent_to_file(struct ceph_file_layout *l,
 	return 0;
 }
 EXPORT_SYMBOL(ceph_extent_to_file);
+
+u64 ceph_get_num_objects(struct ceph_file_layout *l, u64 size)
+{
+	u64 period = (u64)l->stripe_count * l->object_size;
+	u64 num_periods = DIV64_U64_ROUND_UP(size, period);
+	u64 remainder_bytes;
+	u64 remainder_objs = 0;
+
+	div64_u64_rem(size, period, &remainder_bytes);
+	if (remainder_bytes > 0 &&
+	    remainder_bytes < (u64)l->stripe_count * l->stripe_unit)
+		remainder_objs = l->stripe_count -
+			    DIV_ROUND_UP_ULL(remainder_bytes, l->stripe_unit);
+
+	return num_periods * l->stripe_count - remainder_objs;
+}
+EXPORT_SYMBOL(ceph_get_num_objects);