From patchwork Tue Oct 29 15:19:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Keith Busch X-Patchwork-Id: 13855059 Received: from mx0a-00082601.pphosted.com (mx0a-00082601.pphosted.com [67.231.145.42]) (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 0E3EF197A93 for ; Tue, 29 Oct 2024 15:20:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.145.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730215204; cv=none; b=ng3ckSSuI6hSvkp7rpolXCVyXqpKbnGkZFG8xQzjwxUmXu01urEBM+HnkxfIwdYgyp4/Lue+GdFAIICVgYxSAhw4VQtQTMMYV6IlzpUExW1Iigv5l0cwHHCsJtn33p1EkdpN28gS/Ckc99uuR6vpl8svkFVGkpAE5msEWGWsG5U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730215204; c=relaxed/simple; bh=I8/Qo8zmSvbDl9OhqTDCEq29os3x4jVXWXNHkXfOpYg=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Bq013nRtP1U6ZO2tavfTMmzj9TIUJHeDSt9eyOcyH3pgE8I9L8Oo5N459+hZBJGcp5uyaVjTTLMn9Dfg6X7c2/PBgneiBj6wki+mFcObjRhob/b5nfuOXOmSgqKpJZF5YGnHbgWuCqPmJiA67Z9W0uyS9x/n13ULIrr91X5vrOI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=meta.com; spf=pass smtp.mailfrom=meta.com; dkim=pass (2048-bit key) header.d=meta.com header.i=@meta.com header.b=CCoMFHMV; arc=none smtp.client-ip=67.231.145.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=meta.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=meta.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=meta.com header.i=@meta.com header.b="CCoMFHMV" Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49T71GKL000853 for ; Tue, 29 Oct 2024 08:20:01 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=meta.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=s2048-2021-q4; bh=aps8B5vbC0snCPQCS1odsvarjIZlBhTaPnTsg871jzs=; b=CCoMFHMVFLtC 8TG79XGavrREbxROokffs4StQPUxSVy942Ee4PC6TqUWrkPjxbQSb6or157j9YYm JcN5DLuaeS3+ZJFrMrfU6cA+ApxUsUyAj4sq5YuztHEFJCc4cyYCyDx8jRckiSQc fslDE+lhnqbUYSckOl+LcV5fdIERSbHFxa72jGQGYfb6DxlQQkx5mW6dVxs/Ayo5 LfubTbWLFic9jCmlfys5Jc86q+qqi/5nl8RhakEUWAn2AMZ15wlarplWAkIYMwYJ zRtW/FhtrT37CA8LuHhRXNTltlYIzt4P35fQ3GsIvdMe1Bud38irtLmseQrSLSmO yX1xEkwfUA== Received: from maileast.thefacebook.com ([163.114.135.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 42jtxwauub-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 29 Oct 2024 08:20:01 -0700 (PDT) Received: from twshared26373.08.ash9.facebook.com (2620:10d:c0a8:1b::8e35) by mail.thefacebook.com (2620:10d:c0a9:6f::8fd4) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.1544.11; Tue, 29 Oct 2024 15:19:47 +0000 Received: by devbig638.nha1.facebook.com (Postfix, from userid 544533) id 2AD5E14920EAA; Tue, 29 Oct 2024 08:19:44 -0700 (PDT) From: Keith Busch To: , , , CC: , , , , , Keith Busch Subject: [PATCHv10 7/9] block: export placement hint feature Date: Tue, 29 Oct 2024 08:19:20 -0700 Message-ID: <20241029151922.459139-8-kbusch@meta.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20241029151922.459139-1-kbusch@meta.com> References: <20241029151922.459139-1-kbusch@meta.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-GUID: yt4YB67aLynAULZau5B6M6NoVaWK2Y9t X-Proofpoint-ORIG-GUID: yt4YB67aLynAULZau5B6M6NoVaWK2Y9t X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-05_03,2024-10-04_01,2024-09-30_01 From: Keith Busch Add a feature flag for devices that support generic placement hints in write commands. This is in contrast to data lifetime hints. Signed-off-by: Keith Busch --- block/blk-settings.c | 2 ++ block/blk-sysfs.c | 3 +++ include/linux/blkdev.h | 3 +++ 3 files changed, 8 insertions(+) diff --git a/block/blk-settings.c b/block/blk-settings.c index 921fb4d334fa4..7e3bb3cec7032 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -518,6 +518,8 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b, t->features &= ~BLK_FEAT_NOWAIT; if (!(b->features & BLK_FEAT_POLL)) t->features &= ~BLK_FEAT_POLL; + if (!(b->features & BLK_FEAT_PLACEMENT_HINTS)) + t->features &= ~BLK_FEAT_PLACEMENT_HINTS; t->flags |= (b->flags & BLK_FLAG_MISALIGNED); diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 85f48ca461049..51e0b99c2210a 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -260,6 +260,7 @@ static ssize_t queue_##_name##_show(struct gendisk *disk, char *page) \ QUEUE_SYSFS_FEATURE_SHOW(poll, BLK_FEAT_POLL); QUEUE_SYSFS_FEATURE_SHOW(fua, BLK_FEAT_FUA); QUEUE_SYSFS_FEATURE_SHOW(dax, BLK_FEAT_DAX); +QUEUE_SYSFS_FEATURE_SHOW(placement_hints, BLK_FEAT_PLACEMENT_HINTS); static ssize_t queue_zoned_show(struct gendisk *disk, char *page) { @@ -497,6 +498,7 @@ QUEUE_RW_ENTRY(queue_poll_delay, "io_poll_delay"); QUEUE_RW_ENTRY(queue_wc, "write_cache"); QUEUE_RO_ENTRY(queue_fua, "fua"); QUEUE_RO_ENTRY(queue_dax, "dax"); +QUEUE_RO_ENTRY(queue_placement_hints, "placement_hints"); QUEUE_RW_ENTRY(queue_io_timeout, "io_timeout"); QUEUE_RO_ENTRY(queue_virt_boundary_mask, "virt_boundary_mask"); QUEUE_RO_ENTRY(queue_dma_alignment, "dma_alignment"); @@ -626,6 +628,7 @@ static struct attribute *queue_attrs[] = { &queue_wc_entry.attr, &queue_fua_entry.attr, &queue_dax_entry.attr, + &queue_placement_hints_entry.attr, &queue_poll_delay_entry.attr, &queue_virt_boundary_mask_entry.attr, &queue_dma_alignment_entry.attr, diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 90a19ea889276..c577a607591de 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -333,6 +333,9 @@ typedef unsigned int __bitwise blk_features_t; #define BLK_FEAT_RAID_PARTIAL_STRIPES_EXPENSIVE \ ((__force blk_features_t)(1u << 15)) +/* supports generic write placement hints */ +#define BLK_FEAT_PLACEMENT_HINTS ((__force blk_features_t)(1u << 16)) + /* * Flags automatically inherited when stacking limits. */