On Fri, Sep 20, 2019 at 03:29:07PM +0300, Cyrill Gorcunov wrote: > Currently there is a small gap between fetching pointer, calling > kvfree and assign its value to nil. In current callgraph it is > not a problem (since memcg_free_shrinker_maps is running from > memcg_alloc_shrinker_maps and mem_cgroup_css_free only) still > this looks suspicious and we can easily eliminate the gap at all. With this logic it will still look suspicious since you don't wait a grace period before freeing the map. -- Kirill A. Shutemov
