From patchwork Thu Jun 13 08:48:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13696410 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 9FA5F142E6F; Thu, 13 Jun 2024 08:49:16 +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=1718268558; cv=none; b=DIHEeUAjxelSjKOu5z5YROLc5B+ns/0XZ+CvuMqVMHcT86VTe4iQUUusGkLRWMjQeezBD0r9w48pb3BUCk4vXfVAr2rPyCypJcMC+xOIiE2q5n442LBvzKFyzDVZJo/Nk8FWzDH8DzcpFnsdWRG3BLoYl8U7F5Dyby6aQBSkyRE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718268558; c=relaxed/simple; bh=4EN5V1qsqbqCddf2Ggp9lCoou1u6l8qudd7IeCSHaDc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=B47QrwwqkZYVltzUJ5qTm6HTMmt6yCyL/1sTwF2GGlGPybhXziAv8cW0gaRxUblEJl6YUIUSvMe4toYT9uJcdVaBlEMQKBrY8TAa5HN/oz3BlnvsE6WQ/d0y3IkAmf/W+0sAZLcbCKcMJHf3TWYauLol1LzEWbjO/+bPLqBf9so= 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=zlJLdDxj; 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="zlJLdDxj" 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=roge0E6G3NOd458B785vm4qIl5Vln8m/KdPSSnmFNPI=; b=zlJLdDxjDo+D0tQNfmOxt8IoAL rZGjs+LjRvFNRaOTPJIB/hg1YP07Am4Dh/ryTvHwsiAZt2U+uGjd6UpUNPtpgR/jOmYiGqB04cCU7 iFDhU2rgdYVvNTByzzDoDHCduEbB/h4CogFsfbHro6uuHoWtQQg7NhichR7N3BGShkYmt3+EBYoJL 24RNTA/zDsPtIFZuA5zxytxWOt//dMKjFLIxBLP9RcjnUUBWPVAELX9WHkh00yZWjfZ7imlCPJfr2 X1spNrVkTneQYddkJ/lvgLkMvUVsrFWNiu3595R/mjUbYLBZBYzN6JAO7yu72ZZUJn+I1pdqV+vgH 0m1ZBbCQ==; Received: from 2a02-8389-2341-5b80-034b-6bc2-b258-c831.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:34b:6bc2:b258:c831] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sHg8s-0000000FnIs-1eys; Thu, 13 Jun 2024 08:49:11 +0000 From: Christoph Hellwig To: Jens Axboe , "Martin K. Petersen" Cc: Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Dan Williams , Vishal Verma , Dave Jiang , Ira Weiny , Keith Busch , Sagi Grimberg , Chaitanya Kulkarni , linux-block@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 10/12] block: bypass the STABLE_WRITES flag for protection information Date: Thu, 13 Jun 2024 10:48:20 +0200 Message-ID: <20240613084839.1044015-11-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240613084839.1044015-1-hch@lst.de> References: <20240613084839.1044015-1-hch@lst.de> Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev 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 Currently registering a checksum-enabled (aka PI) integrity profile sets the QUEUE_FLAG_STABLE_WRITE flag, and unregistering it clears the flag. This can incorrectly clear the flag when the driver requires stable writes even without PI, e.g. in case of iSCSI or NVMe/TCP with data digest enabled. Fix this by looking at the csum_type directly in bdev_stable_writes and not setting the queue flag. Also remove the blk_queue_stable_writes helper as the only user in nvme wants to only look at the actual QUEUE_FLAG_STABLE_WRITE flag as it inherits the integrity configuration by other means. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke --- block/blk-integrity.c | 6 ------ drivers/nvme/host/multipath.c | 3 ++- include/linux/blkdev.h | 12 ++++++++---- 3 files changed, 10 insertions(+), 11 deletions(-) diff --git a/block/blk-integrity.c b/block/blk-integrity.c index 1d2d371cd632d3..bec0d1df387ce9 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -379,9 +379,6 @@ void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template bi->tag_size = template->tag_size; bi->pi_offset = template->pi_offset; - if (bi->csum_type != BLK_INTEGRITY_CSUM_NONE) - blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue); - #ifdef CONFIG_BLK_INLINE_ENCRYPTION if (disk->queue->crypto_profile) { pr_warn("blk-integrity: Integrity and hardware inline encryption are not supported together. Disabling hardware inline encryption.\n"); @@ -404,9 +401,6 @@ void blk_integrity_unregister(struct gendisk *disk) if (!bi->tuple_size) return; - - if (bi->csum_type != BLK_INTEGRITY_CSUM_NONE) - blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, disk->queue); memset(bi, 0, sizeof(*bi)); } EXPORT_SYMBOL(blk_integrity_unregister); diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index d8b6b4648eaff9..12c59db02539e5 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -875,7 +875,8 @@ void nvme_mpath_add_disk(struct nvme_ns *ns, __le32 anagrpid) nvme_mpath_set_live(ns); } - if (blk_queue_stable_writes(ns->queue) && ns->head->disk) + if (test_bit(QUEUE_FLAG_STABLE_WRITES, &ns->queue->queue_flags) && + ns->head->disk) blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, ns->head->disk->queue); #ifdef CONFIG_BLK_DEV_ZONED diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index bdd33388e1ced8..f9089750919c6b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -571,8 +571,6 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #define blk_queue_noxmerges(q) \ test_bit(QUEUE_FLAG_NOXMERGES, &(q)->queue_flags) #define blk_queue_nonrot(q) test_bit(QUEUE_FLAG_NONROT, &(q)->queue_flags) -#define blk_queue_stable_writes(q) \ - test_bit(QUEUE_FLAG_STABLE_WRITES, &(q)->queue_flags) #define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags) #define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags) #define blk_queue_zone_resetall(q) \ @@ -1300,8 +1298,14 @@ static inline bool bdev_synchronous(struct block_device *bdev) static inline bool bdev_stable_writes(struct block_device *bdev) { - return test_bit(QUEUE_FLAG_STABLE_WRITES, - &bdev_get_queue(bdev)->queue_flags); + struct request_queue *q = bdev_get_queue(bdev); + +#ifdef CONFIG_BLK_DEV_INTEGRITY + /* BLK_INTEGRITY_CSUM_NONE is not available in blkdev.h */ + if (q->integrity.csum_type != 0) + return true; +#endif + return test_bit(QUEUE_FLAG_STABLE_WRITES, &q->queue_flags); } static inline bool bdev_write_cache(struct block_device *bdev)