From nobody Tue Feb 10 05:10:23 2026 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C535F262FE5; Sat, 25 Oct 2025 03:30:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761363012; cv=none; b=T55nMh/Hi5tPIYmmiklZiKI4m+4F+hN36+eWoH2b9K5rNcfwz1rEx37jgKcXqRc0HOEmhZQrTTVlM9XsZhDS7vMvg1/I+bqitk3hbh0TESjtA2bY9fm3A3VZX74qN265VhiO7kcYJGl4B6TzqHEkNWO8h2pjxy65+gNkhXfsyrY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761363012; c=relaxed/simple; bh=2A9GbxCyYmANqsEezNksnGl3vLPW1GFAeT4mOrmRR1g=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=cm6dQvcBibhQ2NqastII4Hkzmr6i+Ihd9G+BdpRmSQOViCnVdAcVIDq79dqlz3MV8xH18w0cGeXV1f/gY2xNBedHXDnUj8EqyGfb6L7ynceMPbHWry14XdanCUxoDLPacvfawPbUZtTAvU6P2TXqj9K5iG8hjqd77+K9PI//xjA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.235]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTPS id 4ctlcL088wzYQtph; Sat, 25 Oct 2025 11:29:06 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.75]) by mail.maildlp.com (Postfix) with ESMTP id A36B71A0E5E; Sat, 25 Oct 2025 11:30:04 +0800 (CST) Received: from huaweicloud.com (unknown [10.50.87.129]) by APP2 (Coremail) with SMTP id Syh0CgBHnEQ6RPxox1YbBg--.45388S20; Sat, 25 Oct 2025 11:30:04 +0800 (CST) From: libaokun@huaweicloud.com To: linux-ext4@vger.kernel.org Cc: tytso@mit.edu, adilger.kernel@dilger.ca, jack@suse.cz, linux-kernel@vger.kernel.org, kernel@pankajraghav.com, mcgrof@kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, yi.zhang@huawei.com, yangerkun@huawei.com, chengzhihao1@huawei.com, libaokun1@huawei.com, libaokun@huaweicloud.com Subject: [PATCH 16/25] ext4: support large block size in ext4_mpage_readpages() Date: Sat, 25 Oct 2025 11:22:12 +0800 Message-Id: <20251025032221.2905818-17-libaokun@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20251025032221.2905818-1-libaokun@huaweicloud.com> References: <20251025032221.2905818-1-libaokun@huaweicloud.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 X-CM-TRANSID: Syh0CgBHnEQ6RPxox1YbBg--.45388S20 X-Coremail-Antispam: 1UD129KBjvJXoW7ur4rJw4kWr43JF18uw18uFg_yoW8Gw4fpa 93K3WkGrn7WryS9an3XF1kZrnYga47CFWUJFZ3Xry3Wa47tryfKwnFqas5XF4jqrsxZr93 XF13Wry7AF4rXrJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUQa14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Gr1j6F4UJwAm72CE4IkC6x0Yz7v_Jr0_ Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8c xan2IY04v7M4kE6xkIj40Ew7xC0wCY1x0262kKe7AKxVWUtVW8ZwCF04k20xvY0x0EwIxG rwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4 vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IY x2IY67AKxVW8JVW5JwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAIw2 0EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x02 67AKxVW8Jr0_Cr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUdsqAUUUUU= X-CM-SenderInfo: 5olet0hnxqqx5xdzvxpfor3voofrz/1tbiAgAMBWj7Ua9I7QAAsD Content-Type: text/plain; charset="utf-8" From: Baokun Li Use the EXT4_P_TO_LBLK() macro to convert folio indexes to blocks to avoid negative left shifts after supporting blocksize greater than PAGE_SIZE. Signed-off-by: Baokun Li Reviewed-by: Zhang Yi Reviewed-by: Jan Kara --- fs/ext4/readpage.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c index f329daf6e5c7..8c8ec9d60b90 100644 --- a/fs/ext4/readpage.c +++ b/fs/ext4/readpage.c @@ -213,9 +213,7 @@ int ext4_mpage_readpages(struct inode *inode, { struct bio *bio =3D NULL; sector_t last_block_in_bio =3D 0; - const unsigned blkbits =3D inode->i_blkbits; - const unsigned blocks_per_page =3D PAGE_SIZE >> blkbits; const unsigned blocksize =3D 1 << blkbits; sector_t next_block; sector_t block_in_file; @@ -251,9 +249,8 @@ int ext4_mpage_readpages(struct inode *inode, =20 blocks_per_folio =3D folio_size(folio) >> blkbits; first_hole =3D blocks_per_folio; - block_in_file =3D next_block =3D - (sector_t)folio->index << (PAGE_SHIFT - blkbits); - last_block =3D block_in_file + nr_pages * blocks_per_page; + block_in_file =3D next_block =3D EXT4_P_TO_LBLK(inode, folio->index); + last_block =3D EXT4_P_TO_LBLK(inode, folio->index + nr_pages); last_block_in_file =3D (ext4_readpage_limit(inode) + blocksize - 1) >> blkbits; if (last_block > last_block_in_file) --=20 2.46.1