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[2003:cb:c701:3100:c642:ba83:8c37:b0e]) by smtp.gmail.com with ESMTPSA id g5-20020adfe405000000b0031773a8e5c4sm16997012wrm.37.2023.08.15.00.50.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Aug 2023 00:50:34 -0700 (PDT) Message-ID: <0e10262d-f961-9c04-74f7-931352b015da@redhat.com> Date: Tue, 15 Aug 2023 09:50:34 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: [PATCH 6/9] mm: Remove HUGETLB_PAGE_DTOR To: "Matthew Wilcox (Oracle)" , Andrew Morton Cc: Jens Axboe , io-uring@vger.kernel.org, linux-mm@kvack.org References: <20230815032645.1393700-1-willy@infradead.org> <20230815032645.1393700-7-willy@infradead.org> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20230815032645.1393700-7-willy@infradead.org> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 56F56180013 X-Stat-Signature: 1gbaejopz1kd8qt1ibm9thgj8y4gjnoq X-HE-Tag: 1692085839-276074 X-HE-Meta: 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 Hp8xRI3n 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 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 15.08.23 05:26, Matthew Wilcox (Oracle) wrote: > We can use a bit in page[1].flags to indicate that this folio belongs > to hugetlb instead of using a value in page[1].dtors. That lets > folio_test_hugetlb() become an inline function like it should be. > We can also get rid of NULL_COMPOUND_DTOR. > > Signed-off-by: Matthew Wilcox (Oracle) > --- > .../admin-guide/kdump/vmcoreinfo.rst | 10 +--- > include/linux/mm.h | 2 - > include/linux/page-flags.h | 21 +++++++- > kernel/crash_core.c | 2 +- > mm/hugetlb.c | 49 +++---------------- > 5 files changed, 29 insertions(+), 55 deletions(-) > > diff --git a/Documentation/admin-guide/kdump/vmcoreinfo.rst b/Documentation/admin-guide/kdump/vmcoreinfo.rst > index c18d94fa6470..baa1c355741d 100644 > --- a/Documentation/admin-guide/kdump/vmcoreinfo.rst Acked-by: David Hildenbrand -- Cheers, David / dhildenb