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Date: Thu, 10 Dec 2020 17:10:29 +0100 From: Johannes Weiner <hannes@...xchg.org> To: Muchun Song <songmuchun@...edance.com> Cc: gregkh@...uxfoundation.org, rafael@...nel.org, adobriyan@...il.com, akpm@...ux-foundation.org, mhocko@...nel.org, vdavydov.dev@...il.com, hughd@...gle.com, will@...nel.org, guro@...com, rppt@...nel.org, tglx@...utronix.de, esyr@...hat.com, peterx@...hat.com, krisman@...labora.com, surenb@...gle.com, avagin@...nvz.org, elver@...gle.com, rdunlap@...radead.org, iamjoonsoo.kim@....com, linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-mm@...ck.org, cgroups@...r.kernel.org Subject: Re: [RESEND PATCH v2 02/12] mm: memcontrol: convert NR_ANON_THPS account to pages On Sun, Dec 06, 2020 at 06:14:41PM +0800, Muchun Song wrote: > @@ -1144,7 +1144,8 @@ void do_page_add_anon_rmap(struct page *page, > * disabled. > */ > if (compound) > - __inc_lruvec_page_state(page, NR_ANON_THPS); > + __mod_lruvec_page_state(page, NR_ANON_THPS, > + HPAGE_PMD_NR); > __mod_lruvec_page_state(page, NR_ANON_MAPPED, nr); What I mistakenly wrote about the previous patch applies to this and the following patches, though: /proc/vmstat currently prints number of anon, file and shmem THPs; you are changing it to print number of 4k pages in those THPs. That's an ABI change we cannot really do.
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