From nobody Tue Feb 10 03:37:27 2026 Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) (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 96CEF33ADA4; Wed, 28 Jan 2026 08:06:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769587584; cv=none; b=f0H7HKWhO1iI0F81ksq9VLkN+CH792q62m84/41xVrQFQMQAArn2Olkd77pX2GsdbIQ33uktcAe//2Hrb8aFHLBFAzW9MZ5p44q/ns5GiHDUYR638M5ic4jwdSQOUZNj+m8KcjjOkJEP3YUvW70tUvbIGT7MDkzZPHFQfYef8NA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769587584; c=relaxed/simple; bh=SdcuBczE9qsYacUWY9nQj3tapNX9F04YrXw7xwOJ9L8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=k161oajkiZ/NFhG6i6jsvPa/PMJ1/IeSXZRn/6RzMKEtZXXE872b1roO7TjjPzTaGhIFkEjl4FbRkiJjr4q+tgZYNQMialUsa435Si1SKVqZzhh8rtuSuldF1y+lGxokCiwgRcl4JPbWBdHmuhjMo/lKHxOngH+hktsd/ew12P4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=none smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.177]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTPS id 4f1FG16tnlzKHMl0; Wed, 28 Jan 2026 16:06:01 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 2A79040592; Wed, 28 Jan 2026 16:06:14 +0800 (CST) Received: from huaweicloud.com (unknown [10.50.87.129]) by APP4 (Coremail) with SMTP id gCh0CgBnFvd1w3lpPgyWFQ--.43207S6; Wed, 28 Jan 2026 16:06:13 +0800 (CST) From: linan666@huaweicloud.com To: song@kernel.org, yukuai@fnnas.com Cc: xni@redhat.com, linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, linan666@huaweicloud.com, yangerkun@huawei.com, yi.zhang@huawei.com Subject: [PATCH v2 02/14] md: introduce sync_folio_io for folio support in RAID Date: Wed, 28 Jan 2026 15:56:56 +0800 Message-Id: <20260128075708.2259525-3-linan666@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20260128075708.2259525-1-linan666@huaweicloud.com> References: <20260128075708.2259525-1-linan666@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: gCh0CgBnFvd1w3lpPgyWFQ--.43207S6 X-Coremail-Antispam: 1UD129KBjvJXoWxXw4DXF1xCF4UCF4xJFWfGrg_yoW5Gr1fpa 4jkF9xG3y5Zw42gw13JFs7Ca4Sq34IgrWUtryfuayfW3W7KryDKF45tF1jvF98GF98CF4x t34jgay5urn5Wr7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmC14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jryl82xGYIkIc2 x26xkF7I0E14v26r4j6ryUM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq3wAa c4AC62xK8xCEY4vEwIxC4wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzV Aqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Gr1j6F4UJwAm 72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYx C7M4kE6xkIj40Ew7xC0wCY1x0262kKe7AKxVWUAVWUtwCF04k20xvY0x0EwIxGrwCFx2Iq xVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r 106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AK xVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7 xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_ Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUFD73UUUUU= X-CM-SenderInfo: polqt0awwwqx5xdzvxpfor3voofrz/ Content-Type: text/plain; charset="utf-8" From: Li Nan Prepare for folio support in RAID by introducing sync_folio_io(), matching sync_page_io()'s functionality. Differences are: - Replace input parameter 'page' with 'folio' - Replace __bio_add_page() calls with bio_add_folio_nofail() - Add new parameter 'off' to prepare for adding a folio to bio in segments, e.g. in fix_recovery_read_error() sync_page_io() will be removed once full folio support is complete. Signed-off-by: Li Nan --- drivers/md/md.h | 2 ++ drivers/md/md.c | 27 +++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/drivers/md/md.h b/drivers/md/md.h index a083f37374d0..410f8a6b75e7 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -920,6 +920,8 @@ void md_write_metadata(struct mddev *mddev, struct md_r= dev *rdev, extern int md_super_wait(struct mddev *mddev); extern int sync_page_io(struct md_rdev *rdev, sector_t sector, int size, struct page *page, blk_opf_t opf, bool metadata_op); +extern int sync_folio_io(struct md_rdev *rdev, sector_t sector, int size, + int off, struct folio *folio, blk_opf_t opf, bool metadata_op); extern void md_do_sync(struct md_thread *thread); extern void md_new_event(void); extern void md_allow_write(struct mddev *mddev); diff --git a/drivers/md/md.c b/drivers/md/md.c index 5df2220b1bd1..b8c8a16cf037 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1192,6 +1192,33 @@ int sync_page_io(struct md_rdev *rdev, sector_t sect= or, int size, } EXPORT_SYMBOL_GPL(sync_page_io); =20 +int sync_folio_io(struct md_rdev *rdev, sector_t sector, int size, int off, + struct folio *folio, blk_opf_t opf, bool metadata_op) +{ + struct bio bio; + struct bio_vec bvec; + + if (metadata_op && rdev->meta_bdev) + bio_init(&bio, rdev->meta_bdev, &bvec, 1, opf); + else + bio_init(&bio, rdev->bdev, &bvec, 1, opf); + + if (metadata_op) + bio.bi_iter.bi_sector =3D sector + rdev->sb_start; + else if (rdev->mddev->reshape_position !=3D MaxSector && + (rdev->mddev->reshape_backwards =3D=3D + (sector >=3D rdev->mddev->reshape_position))) + bio.bi_iter.bi_sector =3D sector + rdev->new_data_offset; + else + bio.bi_iter.bi_sector =3D sector + rdev->data_offset; + bio_add_folio_nofail(&bio, folio, size, off); + + submit_bio_wait(&bio); + + return !bio.bi_status; +} +EXPORT_SYMBOL_GPL(sync_folio_io); + static int read_disk_sb(struct md_rdev *rdev, int size) { if (rdev->sb_loaded) --=20 2.39.2