From patchwork Thu Oct 17 16:09:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Keith Busch X-Patchwork-Id: 13840307 Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) (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 143121DEFCD for ; Thu, 17 Oct 2024 16:10:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.153.30 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729181412; cv=none; b=USCXuh06DNRopVXaofzQtmxYitlmSqgkrOltzk7f7YEl5nqHe5isvd93WRDXRcv3jy3DtCUCo/qGUXwtHfA9CD5yAmXhClwpIycnVtJB1rRfhl+7Vp31WZ34v4i0i6hXIsN2Gp7ikXP94tpmbgk290ObFqEBYAaiLlvfy9SUexk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729181412; c=relaxed/simple; bh=8ORMPad2HTS604lXUVSlFDlE8XbLD6RWU8f6sgsUi5g=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=PvVR91Rg1Qw/fiHFN/sCNfOVh4K+aTYL4pLT0/V+ZTBSjhljXt/m/89No4fFfK3h/kH2E+5WMYkSbXHLklxuIGPwfqQX/DQBku+hI0+p3CN1seFhq9kFTSDczzrDGUezA6YsTjDQ585zmzQaECsuJq6EmHVxV8uzJGRPjNT5rvM= 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=keMyyjtL; arc=none smtp.client-ip=67.231.153.30 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="keMyyjtL" Received: from pps.filterd (m0148460.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49HCh3tX025716 for ; Thu, 17 Oct 2024 09:10:10 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=meta.com; h=cc :content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=s2048-2021-q4; bh=tOGBz/rCTzSIryNyP6 GSBMTEgXEhA57kzrdrwgMPCHA=; b=keMyyjtLol7RAtcGNTKxI8QlK8k1swjkdm BiSlJO6MXMXYySC0e+iQbnJSOskLIQL9EaV6JOcOHwD9zjcCqRY9liXDf5yppcmY 1mEGzozq7e/0qC1J+rdBx02eumeTwc0T28Fo6di9qY1m7OWMUj3i2Uby9BBSoKQE DUSbZtRtjITPRW+QjwPA1zuBIQOGkIXfitGmqXz1Txh2nBWkNwS0dt7QmJuUtSyY Tne2S7b9fQxTM0wC+ULNdGBssW/Y5/ZMR1MJcDGt9SULIoJnJ0GxDNt1I4z2iYz1 V9qk9KMQcbyOmhA8/YNTFlb0NGXoaimjxZ6oW7++bO0g7LxbKu8g== Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 42b1auj6ap-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 17 Oct 2024 09:10:09 -0700 (PDT) Received: from twshared16035.07.ash9.facebook.com (2620:10d:c0a8:1b::8e35) by mail.thefacebook.com (2620:10d:c0a9:6f::237c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.1544.11; Thu, 17 Oct 2024 16:10:07 +0000 Received: by devbig638.nha1.facebook.com (Postfix, from userid 544533) id DC738143A4A96; Thu, 17 Oct 2024 09:09:57 -0700 (PDT) From: Keith Busch To: , , , , CC: , , , Keith Busch Subject: [PATCHv8 0/6] write hints for nvme fdp Date: Thu, 17 Oct 2024 09:09:31 -0700 Message-ID: <20241017160937.2283225-1-kbusch@meta.com> X-Mailer: git-send-email 2.43.5 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-GUID: nuK2rQxBYc5qu5jtfuMchWGxNMQ0zb5j X-Proofpoint-ORIG-GUID: nuK2rQxBYc5qu5jtfuMchWGxNMQ0zb5j 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 Changes from v7: Limits io_uring per-io hints to raw block, and only if the block device registers a new queue limit indicating support for it. The per-io hints are opaque to the kernel. Minor changelog and code organization changes. I don't really understand the io_uring suggestions, so I just made the write_hint a first class field without the "meta" indirection. It's kind of like ioprio, which has it's own field too. Actually, might be neat if we could use ioprio since it already has a "hints" field that is currently only used by command duration limits. Kanchan Joshi (3): block, fs: restore kiocb based write hint processing io_uring: enable per-io hinting capability nvme: enable FDP support Keith Busch (3): block: use generic u16 for write hints block: introduce max_write_hints queue limit fs: introduce per-io hint support flag Documentation/ABI/stable/sysfs-block | 7 +++ block/blk-settings.c | 3 + block/blk-sysfs.c | 3 + block/fops.c | 10 ++-- drivers/nvme/host/core.c | 82 ++++++++++++++++++++++++++++ drivers/nvme/host/nvme.h | 5 ++ fs/aio.c | 1 + fs/cachefiles/io.c | 1 + fs/direct-io.c | 2 +- fs/iomap/direct-io.c | 2 +- include/linux/blk-mq.h | 3 +- include/linux/blk_types.h | 2 +- include/linux/blkdev.h | 12 ++++ include/linux/fs.h | 10 ++++ include/linux/nvme.h | 19 +++++++ include/uapi/linux/io_uring.h | 4 ++ io_uring/rw.c | 10 +++- 17 files changed, 166 insertions(+), 10 deletions(-)