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 8C7C6D44150 for ; Tue, 19 Nov 2024 12:16:43 +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-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ZCibf9nDXx/wBVyXnoXvLzPNlRRpMiBGQGPX4h8joGI=; b=yDXnkQc0KxDL7FBSmBGZ09xo/c 3Hh7c2OOY/pv6siDcVZE9nejCboEbUJv2jxDb02ZGgb4/FDFz8unX45d3mq1L48y1BCt4MW9qQr+8 nOJBvSMbg8NOFWtcqTNjdlIGBQTqTcWj02JEzyX4EB5VB4sqDhy+K+XjmrHgCELAxc/yGtq+LLyCD uJzcmLbhKxsBfe4pAu3n6hnasFrKwTgUF7CVf9Ky99awM1xzKsl7JcDJUwXmZ7i8Yv9wrAxqws+y8 N67BNzhfpH+6TWgQ3O6HCXvY6C9GIIljZM5p1CYOJHkd/yVs+nBzxTi6CVvNRFEFgK3dVSljXlC7d zOHEj89w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tDN9u-0000000CIt2-00cv; Tue, 19 Nov 2024 12:16:42 +0000 Received: from 2a02-8389-2341-5b80-1731-a089-d2b1-3edf.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:1731:a089:d2b1:3edf] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1tDN9r-0000000CIry-2H8D; Tue, 19 Nov 2024 12:16:40 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Christian Brauner , Keith Busch , Sagi Grimberg , Kanchan Joshi , Hui Qi , Nitesh Shetty , Jan Kara , Pavel Begunkov , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org Subject: [PATCH 01/15] fs: add write stream information to statx Date: Tue, 19 Nov 2024 13:16:15 +0100 Message-ID: <20241119121632.1225556-2-hch@lst.de> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241119121632.1225556-1-hch@lst.de> References: <20241119121632.1225556-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 Add new statx field to report the maximum number of write streams supported and the granularity for them. Signed-off-by: Keith Busch [hch: s/write_hint/write_stream/g, add granularity] Signed-off-by: Christoph Hellwig --- 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 41e598376d7e..aa2b7fa4a877 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -704,6 +704,8 @@ 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 3d900c86981c..36d4dfb291ab 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 887a25286441..547c62a1a3a7 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 */ -- 2.45.2