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[2003:dc:6f26:7100:230:64ff:fe74:809]) by smtp.gmail.com with ESMTPSA id s18-20020a170906169200b00a3d1897ab68sm631175ejd.113.2024.02.15.06.56.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Feb 2024 06:56:17 -0800 (PST) From: Max Kellermann To: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Max Kellermann Subject: [PATCH v1 07/14] linux/mm.h: move folio_next() to mm/folio_next.h Date: Thu, 15 Feb 2024 15:55:55 +0100 Message-Id: <20240215145602.1371274-8-max.kellermann@ionos.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240215145602.1371274-1-max.kellermann@ionos.com> References: <20240215145602.1371274-1-max.kellermann@ionos.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: D40D5A000A X-Stat-Signature: mfez1aixh6pkqhbgdr3jfp8z9do4nxgd X-HE-Tag: 1708008978-586785 X-HE-Meta: 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 Qq+/2jAE 0Ym3A9BCDk1BD6uCkhkNdDx7EEeDlMxMPARY5qAXNWRDXJbuHBcOg2aLeS27YzpRqWCc9n8rCfqHmK62vYVt0NJ4maf3qGCYHTGFvjQLdWVtsHlMtWQdFTOpoyEV0oTTYEJ/ySs5eSWyavbn3Fz+tqFnfannMTEsh44ZLyN3hftn9ouMboXohetZNCcy0ibnfSKRwN8GHY0bx5PSV8wXuF+rYv25MP+HQ8RGc50lRyZcVUR4Tvy99Hs4O4n94lzs7U/D5XtDHdRhlOvBuDV/ae71GWtS+8EmuDxfVeglUrVdUK8S08aG0IPHBAoHKd04iWtOkmqn7lf8tOERIx0u6n+s9bYXnEKjS5bGdCzYXqWbjoviG1u3ZT5Bo5w== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000331, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Prepare to reduce dependencies in linux/mm.h. Signed-off-by: Max Kellermann --- include/linux/mm.h | 20 +------------------- include/linux/mm/folio_next.h | 27 +++++++++++++++++++++++++++ 2 files changed, 28 insertions(+), 19 deletions(-) create mode 100644 include/linux/mm/folio_next.h diff --git a/include/linux/mm.h b/include/linux/mm.h index 778f8aebb45c..680329ec21ba 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2,6 +2,7 @@ #ifndef _LINUX_MM_H #define _LINUX_MM_H +#include #include #include #include @@ -1902,25 +1903,6 @@ static inline void set_page_links(struct page *page, enum zone_type zone, #endif } -/** - * folio_next - Move to the next physical folio. - * @folio: The folio we're currently operating on. - * - * If you have physically contiguous memory which may span more than - * one folio (eg a &struct bio_vec), use this function to move from one - * folio to the next. Do not use it if the memory is only virtually - * contiguous as the folios are almost certainly not adjacent to each - * other. This is the folio equivalent to writing ``page++``. - * - * Context: We assume that the folios are refcounted and/or locked at a - * higher level and do not adjust the reference counts. - * Return: The next struct folio. - */ -static inline struct folio *folio_next(struct folio *folio) -{ - return (struct folio *)folio_page(folio, folio_nr_pages(folio)); -} - /** * folio_estimated_sharers - Estimate the number of sharers of a folio. * @folio: The folio. diff --git a/include/linux/mm/folio_next.h b/include/linux/mm/folio_next.h new file mode 100644 index 000000000000..f92d649c42c6 --- /dev/null +++ b/include/linux/mm/folio_next.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_MM_FOLIO_NEXT_H +#define _LINUX_MM_FOLIO_NEXT_H + +#include // for nth_page(), needed by folio_page() +#include // for folio_nr_pages() + +/** + * folio_next - Move to the next physical folio. + * @folio: The folio we're currently operating on. + * + * If you have physically contiguous memory which may span more than + * one folio (eg a &struct bio_vec), use this function to move from one + * folio to the next. Do not use it if the memory is only virtually + * contiguous as the folios are almost certainly not adjacent to each + * other. This is the folio equivalent to writing ``page++``. + * + * Context: We assume that the folios are refcounted and/or locked at a + * higher level and do not adjust the reference counts. + * Return: The next struct folio. + */ +static inline struct folio *folio_next(struct folio *folio) +{ + return (struct folio *)folio_page(folio, folio_nr_pages(folio)); +} + +#endif /* _LINUX_MM_FOLIO_NEXT_H */ -- 2.39.2