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[131.94.134.89]) by smtp.gmail.com with ESMTPSA id 00721157ae682-81fcd0d6fbbsm29903767b3.25.2026.08.01.15.01.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 01 Aug 2026 15:01:07 -0700 (PDT) From: Chao Shi To: Jan Kara , Christian Brauner , Alexander Viro , Matthew Wilcox , linux-fsdevel@vger.kernel.org Cc: Theodore Ts'o , Andreas Dilger , Baokun Li , Ojaswin Mujoo , Ritesh Harjani , Zhang Yi , Bob Copeland , Namjae Jeon , Sungjong Seo , Yuezhang Mo , OGAWA Hirofumi , Mark Fasheh , Joel Becker , Joseph Qi , Andreas Gruenbacher , linux-ext4@vger.kernel.org, ocfs2-devel@lists.linux.dev, gfs2@lists.linux.dev, linux-karma-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Chao Shi Subject: [PATCH 01/19] buffer_head: Remove b_page Date: Sat, 1 Aug 2026 18:00:45 -0400 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Matthew Wilcox (Oracle)" All users except bh_offset() have been converted to use b_folio instead. Convert bh_offset() and remove b_page. Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Chao Shi --- include/linux/buffer_head.h | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h index fd2c7115c054..699970b4bbf2 100644 --- a/include/linux/buffer_head.h +++ b/include/linux/buffer_head.h @@ -59,10 +59,7 @@ struct address_space; struct buffer_head { unsigned long b_state; /* buffer state bitmap (see above) */ struct buffer_head *b_this_page;/* circular list of page's buffers */ - union { - struct page *b_page; /* the page this bh is mapped to */ - struct folio *b_folio; /* the folio this bh is mapped to */ - }; + struct folio *b_folio; /* the folio this bh is mapped to */ sector_t b_blocknr; /* start block number */ size_t b_size; /* size of mapping */ @@ -172,7 +169,7 @@ static __always_inline int buffer_uptodate(const struct buffer_head *bh) static inline unsigned long bh_offset(const struct buffer_head *bh) { - return (unsigned long)(bh)->b_data & (page_size(bh->b_page) - 1); + return (unsigned long)(bh)->b_data & (folio_size(bh->b_folio) - 1); } /* If we *know* page->private refers to buffer_heads */ -- 2.43.0