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Shutemov" To: Zi Yan Cc: linux-mm@kvack.org, Matthew Wilcox , "Kirill A . Shutemov" , Roman Gushchin , Andrew Morton , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Yang Shi , Michal Hocko , John Hubbard , Ralph Campbell , David Nellans Subject: Re: [RFC PATCH 3/6] mm: page_owner: add support for splitting to any order in split page_owner. Message-ID: <20201116162519.f4n445yku3dp2fhw@box> References: <20201111204008.21332-1-zi.yan@sent.com> <20201111204008.21332-4-zi.yan@sent.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201111204008.21332-4-zi.yan@sent.com> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Nov 11, 2020 at 03:40:05PM -0500, Zi Yan wrote: > From: Zi Yan > > It adds a new_order parameter to set new page order in page owner. > It prepares for upcoming changes to support split huge page to any lower > order. > > Signed-off-by: Zi Yan > --- > include/linux/page_owner.h | 7 ++++--- > mm/huge_memory.c | 2 +- > mm/page_alloc.c | 2 +- > mm/page_owner.c | 6 +++--- > 4 files changed, 9 insertions(+), 8 deletions(-) > > diff --git a/include/linux/page_owner.h b/include/linux/page_owner.h > index 3468794f83d2..215cbb159568 100644 > --- a/include/linux/page_owner.h > +++ b/include/linux/page_owner.h > @@ -31,10 +31,11 @@ static inline void set_page_owner(struct page *page, > __set_page_owner(page, order, gfp_mask); > } > > -static inline void split_page_owner(struct page *page, unsigned int nr) > +static inline void split_page_owner(struct page *page, unsigned int nr, > + unsigned int new_order) > { > if (static_branch_unlikely(&page_owner_inited)) > - __split_page_owner(page, nr); > + __split_page_owner(page, nr, new_order); Hm. Where do you correct __split_page_owner() declaration. I don't see it. -- Kirill A. Shutemov