The subject is the same, except that v2 has been changed to v3. Normally that means a new revision of the same patch. Multiple patches in the same series are typically denoted as [PATCH 1/N], [PATCH 2/N], etc.
The subject is the same, except that v2 has been changed to v3. Normally that means a new revision of the same patch. Multiple patches in the same series are typically denoted as [PATCH 1/N], [PATCH 2/N], etc.