On 10/26/2017 07:19 AM, Michal Hocko wrote: >> Current vm_normal_page implementation doesn't pick up page with DEVMAP pfn. >> The second patch fix this and export DAX mappings into counters introduced in the >> first patch. >> >> IMO, the user care more about how much persistent memory they used, how about >> a small tweak with smaps_account, and report the total mapping size into RSS/PSS, >> which user are usually more familiar with? > No! Rss and pss is already used by many tools to evaluate misbehaving > tasks. If you start accounting the memory which is not bound to the > process life time then you can break those usecases. This is the reason > why hugetlb is not accounted to rss as well. Yeah, folks (rightly) assume Rss is memory and eaten from MemTotal. DAX mappings do not use RAM. -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
