From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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.lore.kernel.org (Postfix) with ESMTPS id E74CAD64083 for ; Fri, 8 Nov 2024 19:49:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=YaxUJJnRZ28AJAdK6cvper+b/ynFQDqHd29QjSNk8fc=; b=OZMX400FH8aIhz1VOqqLgI78YT iMPZO6gh6wHKIFvPCItk7tK7K8H0IRoEK7cAFmew+jtYjfNUzTbJvwbqgxsqOHO36biWGccfrxICT aYUzM85FWs3ZY7TKn4ARzhIcUMgzD763ZrqQZGu0dyqMKUGnFgtLzvWo1ntHC8iHy4X6UUBgyZQ5a ka6KBlSBz6cpCmjFojzfBBx8NAL7/O87WZ+qXLvBEFg5qeTKuTL1f1LALaFn0vAD0ESiKWwkW/Eaw Z4Mlt1qIKtlGaeIJkBuOlqLtmp/x9sbZ98l0hvu0BdJovVoeQRxxiQdJdhBrulFhSskUpu+0xBdJi xNRZDQxA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t9Uyk-0000000BmcP-1FEA; Fri, 08 Nov 2024 19:49:10 +0000 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t9Uyh-0000000Bmau-0smq for linux-nvme@lists.infradead.org; Fri, 08 Nov 2024 19:49:08 +0000 Received: from pps.filterd (m0044012.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4A8HPeew008078 for ; Fri, 8 Nov 2024 11:49:07 -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=YaxUJJnRZ28AJAdK6cvper+b/ynFQDqHd29QjSNk8fc=; b=naVfa/97F2RL efmByA/AvA/pL3j+JJmsm4Wr597WLBdbJ50RmC/Lf0AaOcW3vRDzzCrKJcfo6w7S OZHp72Se7FEaabkj160022BRyiZ4JQtsbrVm03lr4q+bT3rHmtlycT81abd9WvKJ 6spJdc/R8j7gCjHhcsUogwonn6eVGdbBxfqQTJrtg+eGuO0tajfoAPdg56ByGJxC Rwi6lpvTF4jPKYXPZJytCN/6MznMSpuk6wQk1dmC0bsRbESRfIV0jQcXJyS0Y/BK gfKb+X5iFSHR5srE3TA1Zdp9dYYPQRkQt8F7WZ6VJjXZt6afqUI86SFq6KsJqarh 5Rjq2oc8Dg== Received: from maileast.thefacebook.com ([163.114.135.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 42sn4ua2fp-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 08 Nov 2024 11:49:06 -0800 (PST) Received: from twshared35181.07.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; Fri, 8 Nov 2024 19:49:04 +0000 Received: by devbig638.nha1.facebook.com (Postfix, from userid 544533) id 8375014E3A032; Fri, 8 Nov 2024 11:36:58 -0800 (PST) From: Keith Busch To: , , , , , CC: , , , , , Keith Busch Subject: [PATCHv11 3/9] statx: add write hint information Date: Fri, 8 Nov 2024 11:36:23 -0800 Message-ID: <20241108193629.3817619-4-kbusch@meta.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20241108193629.3817619-1-kbusch@meta.com> References: <20241108193629.3817619-1-kbusch@meta.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-ORIG-GUID: 8aVabRHdHsj_CGG9X29O68VQE1U3C_0O X-Proofpoint-GUID: 8aVabRHdHsj_CGG9X29O68VQE1U3C_0O 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_02,2024-10-04_01,2024-09-30_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241108_114907_284739_2198F595 X-CRM114-Status: GOOD ( 15.08 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Keith Busch If requested on a raw block device, report the maximum write hint the block device supports. Signed-off-by: Keith Busch --- block/bdev.c | 5 +++++ fs/stat.c | 1 + include/linux/stat.h | 1 + include/uapi/linux/stat.h | 3 ++- 4 files changed, 9 insertions(+), 1 deletion(-) diff --git a/block/bdev.c b/block/bdev.c index 738e3c8457e7f..9a59f0c882170 100644 --- a/block/bdev.c +++ b/block/bdev.c @@ -1296,6 +1296,11 @@ void bdev_statx(struct path *path, struct kstat *s= tat, stat->result_mask |=3D STATX_DIOALIGN; } =20 + if (request_mask & STATX_WRITE_HINT) { + stat->write_hint_max =3D bdev_max_write_hints(bdev); + stat->result_mask |=3D STATX_WRITE_HINT; + } + if (request_mask & STATX_WRITE_ATOMIC && bdev_can_atomic_write(bdev)) { struct request_queue *bd_queue =3D bdev->bd_queue; =20 diff --git a/fs/stat.c b/fs/stat.c index 41e598376d7e3..60bcd5c2e2a1d 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -704,6 +704,7 @@ cp_statx(const struct kstat *stat, struct statx __use= r *buffer) tmp.stx_atomic_write_unit_min =3D stat->atomic_write_unit_min; tmp.stx_atomic_write_unit_max =3D stat->atomic_write_unit_max; tmp.stx_atomic_write_segments_max =3D stat->atomic_write_segments_max; + tmp.stx_write_hint_max =3D stat->write_hint_max; =20 return copy_to_user(buffer, &tmp, sizeof(tmp)) ? -EFAULT : 0; } diff --git a/include/linux/stat.h b/include/linux/stat.h index 3d900c86981c5..48f0f64846a02 100644 --- a/include/linux/stat.h +++ b/include/linux/stat.h @@ -57,6 +57,7 @@ struct kstat { u32 atomic_write_unit_min; u32 atomic_write_unit_max; u32 atomic_write_segments_max; + u32 write_hint_max; }; =20 /* 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..10f5622c21113 100644 --- a/include/uapi/linux/stat.h +++ b/include/uapi/linux/stat.h @@ -132,7 +132,7 @@ 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 coun= t */ - __u32 __spare1[1]; + __u32 stx_write_hint_max; /* 0xb8 */ __u64 __spare3[9]; /* Spare space for future expansion */ /* 0x100 */ @@ -164,6 +164,7 @@ struct statx { #define STATX_MNT_ID_UNIQUE 0x00004000U /* Want/got extended stx_mount_i= d */ #define STATX_SUBVOL 0x00008000U /* Want/got stx_subvol */ #define STATX_WRITE_ATOMIC 0x00010000U /* Want/got atomic_write_* fields= */ +#define STATX_WRITE_HINT 0x00020000U /* Want/got write_hint_max */ =20 #define STATX__RESERVED 0x80000000U /* Reserved for future struct statx= expansion */ =20 --=20 2.43.5