From patchwork Fri Dec 6 22:17:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Keith Busch X-Patchwork-Id: 13897874 Received: from mx0a-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 AFBAE20459D for ; Fri, 6 Dec 2024 22:24:13 +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=1733523855; cv=none; b=qP1h7KIDFvOgUfkP8JQk/Jcki+OEDzBz/xL9bvxe0iGzzeYd+bEaH1zeyBelg8XkX2nQ34jLwlFtklBiZK5g0CJwy/7Lzk3O+658Ed/ijaIxzcayeE/yfa+XPGClO3M/DZTFqz0vufNc9HFn5RjXiXa5t2TMLBlaQqDNJzwr7V4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733523855; c=relaxed/simple; bh=ukAn3Puk+mzSpgUH5QpxvX6oj/B9tKT9Zod2gBrrNxk=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lb2u6LhVFnAHEczDEA4AyMKGw6ft4hiBq6Z/bHRxNwITt3awGgBLpHhMjIZnnSvTMCji0sc2oFpJWKO1EaRua8pjXDYxe4UDUgc+8RrPpIU/nVEt2PhmhBLvBDTQ0ALU1lIO5HCRsR/kYC/4sFa1jsvR1VsIqtoJBdqeJjJ7fnA= 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=MiSC5NA4; 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="MiSC5NA4" Received: from pps.filterd (m0089730.ppops.net [127.0.0.1]) by m0089730.ppops.net (8.18.1.2/8.18.1.2) with ESMTP id 4B6LhBtB028061 for ; Fri, 6 Dec 2024 14:24:12 -0800 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=RnKIfSUe6w2ixzU7OG+SwOm9cN3Gu+YpiZw9DKhX7pk=; b=MiSC5NA4E991 g1Z2rOz099KsCp+9EKpGa4+eBiIZiIF3d+kZgjr6MjcZV97/5BYM8FYWJaqP3YXu ijUhSgLFDJ+g7d/AET0NYt3oacsXLKgFa4r2bky+jXc2We7Ef0zUpnlk9R47AsHP h99gZpgv6BT4KOcs3mZR9Z0rXQDY9ZSVwvMofHcWDzuJr8pojpLV28CfR7uX3X8y CUBemLCIkhvCF8MJQrd7T/yUbdcmw3Secb/XPot84udgT/XKR61ixaeKwQlbtmM+ 0wxFvg0737T5D9A0h1Urw7Xgvkj7Vu4rkJBwzY3z5+N+T0yaFwd4XK7oOq8z4bgA eLjVcCjtdA== Received: from mail.thefacebook.com ([163.114.134.16]) by m0089730.ppops.net (PPS) with ESMTPS id 43c1ggkvha-16 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 06 Dec 2024 14:24:12 -0800 (PST) Received: from twshared3815.08.ash9.facebook.com (2620:10d:c085:208::f) by mail.thefacebook.com (2620:10d:c08b:78::2ac9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.1544.11; Fri, 6 Dec 2024 22:24:03 +0000 Received: by devbig638.nha1.facebook.com (Postfix, from userid 544533) id EA02015B8CB69; Fri, 6 Dec 2024 14:18:26 -0800 (PST) From: Keith Busch To: , , , , , CC: , , , , Keith Busch Subject: [PATCHv12 01/12] fs: add write stream information to statx Date: Fri, 6 Dec 2024 14:17:50 -0800 Message-ID: <20241206221801.790690-2-kbusch@meta.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20241206221801.790690-1-kbusch@meta.com> References: <20241206221801.790690-1-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: alOC3wdo3x9ZcB-zXF88m4H-_z2jVGe2 X-Proofpoint-ORIG-GUID: alOC3wdo3x9ZcB-zXF88m4H-_z2jVGe2 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 new statx field to report the maximum number of write streams supported and the granularity for them. Signed-off-by: Keith Busch [hch: rename hint to stream, add granularity] Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Nitesh Shetty --- fs/stat.c | 2 ++ include/linux/stat.h | 2 ++ include/uapi/linux/stat.h | 7 +++++-- 3 files changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/stat.c b/fs/stat.c index 0870e969a8a0b..00e4598b1ff25 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -729,6 +729,8 @@ cp_statx(const struct kstat *stat, struct statx __user *buffer) tmp.stx_atomic_write_unit_min = stat->atomic_write_unit_min; tmp.stx_atomic_write_unit_max = stat->atomic_write_unit_max; tmp.stx_atomic_write_segments_max = stat->atomic_write_segments_max; + tmp.stx_write_stream_granularity = stat->write_stream_granularity; + tmp.stx_write_stream_max = stat->write_stream_max; return copy_to_user(buffer, &tmp, sizeof(tmp)) ? -EFAULT : 0; } diff --git a/include/linux/stat.h b/include/linux/stat.h index 3d900c86981c5..36d4dfb291abd 100644 --- a/include/linux/stat.h +++ b/include/linux/stat.h @@ -57,6 +57,8 @@ struct kstat { u32 atomic_write_unit_min; u32 atomic_write_unit_max; u32 atomic_write_segments_max; + u32 write_stream_granularity; + u16 write_stream_max; }; /* These definitions are internal to the kernel for now. Mainly used by nfsd. */ diff --git a/include/uapi/linux/stat.h b/include/uapi/linux/stat.h index 887a252864416..547c62a1a3a7c 100644 --- a/include/uapi/linux/stat.h +++ b/include/uapi/linux/stat.h @@ -132,9 +132,11 @@ struct statx { __u32 stx_atomic_write_unit_max; /* Max atomic write unit in bytes */ /* 0xb0 */ __u32 stx_atomic_write_segments_max; /* Max atomic write segment count */ - __u32 __spare1[1]; + __u32 stx_write_stream_granularity; /* 0xb8 */ - __u64 __spare3[9]; /* Spare space for future expansion */ + __u16 stx_write_stream_max; + __u16 __sparse2[3]; + __u64 __spare3[8]; /* Spare space for future expansion */ /* 0x100 */ }; @@ -164,6 +166,7 @@ struct statx { #define STATX_MNT_ID_UNIQUE 0x00004000U /* Want/got extended stx_mount_id */ #define STATX_SUBVOL 0x00008000U /* Want/got stx_subvol */ #define STATX_WRITE_ATOMIC 0x00010000U /* Want/got atomic_write_* fields */ +#define STATX_WRITE_STREAM 0x00020000U /* Want/got write_stream_* */ #define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */