From patchwork Mon Jul 1 16:51:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13718412 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 9D61816DC28; Mon, 1 Jul 2024 16:52:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719852755; cv=none; b=bAMWNukrIcEqP4t8hwei1DeZTWfiD+Pru6g6SatGbHZcM00QX4I9gD5eBpua4jmbAHherB7etrO+oMI/QovjLmfuS7gx5KOM6ci+CHv7YZKHyqHFyl4/0sit9WqvaHbJie/q2h2en1LP+S8xMH6LSglZtCOipqdJEabJq7z0sok= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719852755; c=relaxed/simple; bh=VCx3oj3J1gwuO8Ki+SrjUqw3M0UviFUVVT2vZ0j7I2A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Lf/pKReGeX+kO+ZBYrxpvpDqN5+qsuR93Htm6te8TjmspjYne85upd1MYNmhA2vjq3N8s7EYqn+RSqkCN4n3SDx9U16i9Q2kXmbCjF/SsZHJXYH0lQJuJc3HxUwpFTT6v8l8RvvvOWdZPxoR4aWGodrUROZwtjSwuCk1iEYUz5k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=lroJqfFj; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="lroJqfFj" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=Q9sAMTxUEzTcvcgUTbBquYG+NeVvB6IffN/QzKQPocs=; b=lroJqfFjKDjvg1tX+YakPJXKmt 6guRRbdfGA7qFGmZZvcgl6VYe9tOzrZa+IARKFL/MsDC67yNDz1EYCHFYroSwPkZAvLWgdnAqa4Tk WSrx2PoR4xqSQYFCCifv6k/zYDFD9sSwu7WsAfc6VsIZ/2ppBVKLiXko3YTs1fKlrUx3DSMFCHqAI kbViVSRuBKkxFrlfFrWyWNKTGmDd9Y5Kg0QtXvrrUa6sWODMDBH8hdHsYesMF7NF9rCY6ahv+snlF mf82Wsg1i7sXG8cy4zZhBTQaqPuLlDo9SRsg/oS3fRZfJjYgIMW5DFr/VfCbAu8e61Tw0OmFTXOLb bZDwYlxw==; Received: from 2a02-8389-2341-5b80-6bfa-ffbf-d1d1-ec94.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:6bfa:ffbf:d1d1:ec94] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sOKGV-00000004Bam-3wSu; Mon, 01 Jul 2024 16:52:32 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Keith Busch , Conrad Meyer , Ulf Hansson , linux-mmc@vger.kernel.org, linux-block@vger.kernel.org Subject: [PATCH 02/10] block: factor out a bio_secure_erase_limit helper Date: Mon, 1 Jul 2024 18:51:12 +0200 Message-ID: <20240701165219.1571322-3-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240701165219.1571322-1-hch@lst.de> References: <20240701165219.1571322-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Add a helper to size the maximum secure erase bio without exceeding the queue limit or overlowing the bi_size member. Signed-off-by: Christoph Hellwig --- block/blk-lib.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/block/blk-lib.c b/block/blk-lib.c index 4aabfc4a7eaa20..ff12c3d2de5aae 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -285,20 +285,22 @@ int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector, } EXPORT_SYMBOL(blkdev_issue_zeroout); +static sector_t bio_secure_erase_limit(struct block_device *bdev) +{ + sector_t bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1; + + return min(bdev_max_secure_erase_sectors(bdev), + (UINT_MAX >> SECTOR_SHIFT) & ~bs_mask); +} + int blkdev_issue_secure_erase(struct block_device *bdev, sector_t sector, sector_t nr_sects, gfp_t gfp) { - sector_t bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1; - unsigned int max_sectors = bdev_max_secure_erase_sectors(bdev); + unsigned int max_sectors = bio_secure_erase_limit(bdev); struct bio *bio = NULL; struct blk_plug plug; int ret = 0; - /* make sure that "len << SECTOR_SHIFT" doesn't overflow */ - if (max_sectors > UINT_MAX >> SECTOR_SHIFT) - max_sectors = UINT_MAX >> SECTOR_SHIFT; - max_sectors &= ~bs_mask; - blk_start_plug(&plug); while (nr_sects) { unsigned int len = min_t(sector_t, nr_sects, max_sectors);