From nobody Tue Feb 10 06:25:33 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 94D1733B6E7; Wed, 28 Jan 2026 08:06:22 +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=1769587585; cv=none; b=RWjh25bM9+3BaJtpW0bMZwy5UsyPy4MpLgNnE6nMeAsXU+a6vxL6k8KtonNpDh0OULz6Toso8gjlKQQtHfZ5dmmT4cqpIIwiLKtRFgDZq8wDFKIcKzeaHnmEuicr+qlmLxIncJZhD5xS0mBeetlo7w0lJbynQFBupB6XgcUS0x0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769587585; c=relaxed/simple; bh=yfudnzEzQRr7C5O99A5U/bgzRdWaEJ6Vw+8Jo3UY7Xo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Vv9SlVEjkyvDU5CNH0LI7F8WRdsoz2TEmQ3zsaXcwD4F3zMXmLlvY0TrDCi8Cc9/CwhlOix04jiNIV3xju7kvp5vyT/uIQ8ENT6uyfUlOdKwLBnp83J3vhdLgj9kMc8fA1Menvk+J5G+hJsEH3zPbGsrmgB7rm+IWs5qChs0+pk= 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 [172.19.163.170]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTPS id 4f1FFZ0RQmzYQv1K; Wed, 28 Jan 2026 16:05:38 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 02AE74056E; Wed, 28 Jan 2026 16:06:15 +0800 (CST) Received: from huaweicloud.com (unknown [10.50.87.129]) by APP4 (Coremail) with SMTP id gCh0CgBnFvd1w3lpPgyWFQ--.43207S17; Wed, 28 Jan 2026 16:06:14 +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 13/14] md/raid10: clean up sync IO size calculation in raid10_sync_request Date: Wed, 28 Jan 2026 15:57:07 +0800 Message-Id: <20260128075708.2259525-14-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--.43207S17 X-Coremail-Antispam: 1UD129KBjvJXoW7Cw1DAry7WF4fCF47Jw18Xwb_yoW8Gr4fpF 1DGr97W3y8ta18Zws8Ja1UC3WFyas5trWjyrWxW3ZxGF1fur9Fka18XF1FgFyDWa43GryY q34vyr4Yy3Z7JF7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUQF14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAac4AC62xK8xCEY4vEwIxC4wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0V AKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Gr1j6F4U JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20V AGYxC7M4kE6xkIj40Ew7xC0wCY1x0262kKe7AKxVWUAVWUtwCF04k20xvY0x0EwIxGrwCF x2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14 v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY 67AKxVW8JVW5JwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAIw20EY4 v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AK xVW8Jr0_Cr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUvhFsUUUUU= X-CM-SenderInfo: polqt0awwwqx5xdzvxpfor3voofrz/ Content-Type: text/plain; charset="utf-8" From: Li Nan Use 'nr_sectors' directly for sync IO size calculation. Prepare folio allocation failure fallback. No functional changes. Signed-off-by: Li Nan --- drivers/md/raid10.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index b728131bdad4..030812f908ac 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3618,28 +3618,24 @@ static sector_t raid10_sync_request(struct mddev *m= ddev, sector_t sector_nr, } } =20 - nr_sectors =3D 0; if (sector_nr + max_sync < max_sector) max_sector =3D sector_nr + max_sync; do { - int len =3D RESYNC_BLOCK_SIZE; + nr_sectors =3D max_sector - sector_nr; =20 - if (sector_nr + (len>>9) > max_sector) - len =3D (max_sector - sector_nr) << 9; - if (len =3D=3D 0) + if (nr_sectors =3D=3D 0) break; for (bio=3D biolist ; bio ; bio=3Dbio->bi_next) { struct resync_folio *rf =3D get_resync_folio(bio); =20 - if (WARN_ON(!bio_add_folio(bio, rf->folio, len, 0))) { + if (WARN_ON(!bio_add_folio(bio, rf->folio, nr_sectors << 9, 0))) { bio->bi_status =3D BLK_STS_RESOURCE; bio_endio(bio); *skipped =3D 1; - return len; + return nr_sectors << 9; } } - nr_sectors +=3D len>>9; - sector_nr +=3D len>>9; + sector_nr +=3D nr_sectors;; } while (0); r10_bio->sectors =3D nr_sectors; =20 --=20 2.39.2