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[2003:cb:c708:e100:4f41:ff29:a59f:8c7a]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-38a8e383654sm5232309f8f.30.2025.01.10.10.22.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 10 Jan 2025 10:22:07 -0800 (PST) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, David Hildenbrand , Andrew Morton , Muchun Song , "Matthew Wilcox (Oracle)" Subject: [PATCH v1 6/6] mm/hugetlb: use folio->lru int demote_free_hugetlb_folios() Date: Fri, 10 Jan 2025 19:21:49 +0100 Message-ID: <20250110182149.746551-7-david@redhat.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250110182149.746551-1-david@redhat.com> References: <20250110182149.746551-1-david@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" We are demoting hugetlb folios to smaller hugetlb folios; let's avoid messing with pages where avoidable. Signed-off-by: David Hildenbrand --- mm/hugetlb.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 60617eecb99dd..e872eff124abb 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3822,13 +3822,15 @@ static long demote_free_hugetlb_folios(struct hstat= e *src, struct hstate *dst, =20 for (i =3D 0; i < pages_per_huge_page(src); i +=3D pages_per_huge_page(d= st)) { struct page *page =3D folio_page(folio, i); + struct folio *new_folio; =20 page->mapping =3D NULL; clear_compound_head(page); prep_compound_page(page, dst->order); + new_folio =3D page_folio(page); =20 - init_new_hugetlb_folio(dst, page_folio(page)); - list_add(&page->lru, &dst_list); + init_new_hugetlb_folio(dst, new_folio); + list_add(&new_folio->lru, &dst_list); } } =20 --=20 2.47.1