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Message-ID: <CAJuCfpEfNVSH4R+2i+5tqXfvQRcEb-80vnKw37-oK-5X463sMA@mail.gmail.com> Date: Thu, 5 Sep 2024 20:27:01 -0700 From: Suren Baghdasaryan <surenb@...gle.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Yu Zhao <yuzhao@...gle.com>, Kent Overstreet <kent.overstreet@...ux.dev>, Muchun Song <muchun.song@...ux.dev>, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH mm-unstable v1 3/3] mm/codetag: add pgalloc_tag_copy() On Thu, Sep 5, 2024 at 5:03 PM Suren Baghdasaryan <surenb@...gle.com> wrote: > > On Thu, Sep 5, 2024 at 4:25 PM Andrew Morton <akpm@...ux-foundation.org> wrote: > > > > On Tue, 3 Sep 2024 15:36:49 -0600 Yu Zhao <yuzhao@...gle.com> wrote: > > > > > Add pgalloc_tag_copy() to transfer the codetag from the old folio to > > > the new one during migration. This makes original allocation sites > > > persist cross migration rather than lump into compaction_alloc, e.g., > > > # echo 1 >/proc/sys/vm/compact_memory > > > # grep compaction_alloc /proc/allocinfo > > > > > > Before this patch: > > > 132968448 32463 mm/compaction.c:1880 func:compaction_alloc > > > > > > After this patch: > > > 0 0 mm/compaction.c:1880 func:compaction_alloc > > > > > > > I'm thinking that [2/3] should be backported? > > Yes, should be CC'ed to stable #6.10 > > > > > And possibly this one, but for that we should identify a Fixes:, please. > > I think for this one Fixes: dcfe378c81f7 ("lib: introduce support for > page allocation tagging") would be the most appropriate. > > I'll review all 3 fixes later today. Looks good to me. Both [2/3] and [3/3] should be sent to stable 6.10. Acked-by: Suren Baghdasaryan <surenb@...gle.com> > Thanks!
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