Merge "libsnapshot: set header max_compression" into main am: 13cb6f7b4b

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2938301

Change-Id: I46f55b6a939e88de863f89707dc0a378f23b585a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/fs_mgr/libsnapshot/libsnapshot_cow/writer_v3.cpp b/fs_mgr/libsnapshot/libsnapshot_cow/writer_v3.cpp
index 61124df..251b24e 100644
--- a/fs_mgr/libsnapshot/libsnapshot_cow/writer_v3.cpp
+++ b/fs_mgr/libsnapshot/libsnapshot_cow/writer_v3.cpp
@@ -110,6 +110,7 @@
     header_.op_count = 0;
     header_.op_count_max = 0;
     header_.compression_algorithm = kCowCompressNone;
+    header_.max_compression_size = options_.compression_factor;
     return;
 }