From patchwork Tue Aug 25 15:33:46 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Tao X-Patchwork-Id: 7071661 Return-Path: X-Original-To: patchwork-linux-nfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id E6639C05AC for ; Tue, 25 Aug 2015 15:35:36 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E73E220896 for ; Tue, 25 Aug 2015 15:35:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED409204EA for ; Tue, 25 Aug 2015 15:35:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932660AbbHYPfd (ORCPT ); Tue, 25 Aug 2015 11:35:33 -0400 Received: from mail-pa0-f47.google.com ([209.85.220.47]:33352 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932416AbbHYPfc (ORCPT ); Tue, 25 Aug 2015 11:35:32 -0400 Received: by pacti10 with SMTP id ti10so54532074pac.0 for ; Tue, 25 Aug 2015 08:35:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=UCNzjz8CoR3HVRvwxp3tdxTo9qo4mxmmrCswKESEOTc=; b=ZxaLW7dTP5uOAYMW341R1uZkki5HpygINP+iKzzKZnbd0wqf0ekWOHc85QpGT4JyHk iKUTdelNKOE2FeHTQDrdZA5aOUBDGanT8lv+yZwlLHFQ4AaLB5LU4ZB6v4SG8W/V0qhL Rfi8DcYbGVjPnNkxOU3hwxvFAS0RCNxVBWJh0JX/X7bHTPD2P4w1oytg1ed7JIdWUHhz OlhDAqOY7/3QpIWTwD1jFl5G1AAoIsz96/SNYm3MVPNw2fKLIGyiNySxEagIuZ3jWnRC OBX3f/ousWlMfQPcOLOS04RB5Alx5JFXWeG8jbvrbnj/+OIvQlDbaPru0KYuM5mWiGjh EbEQ== X-Gm-Message-State: ALoCoQm+LKY5uX8MbjKRzwxqV0m+jJqtzDMgwth9K7ciJdvlXYK+i9SdG/FNh+AO6LUQ6YMobNKA X-Received: by 10.68.109.97 with SMTP id hr1mr57078930pbb.110.1440516931470; Tue, 25 Aug 2015 08:35:31 -0700 (PDT) Received: from lear.localdomain (ec2-54-65-164-9.ap-northeast-1.compute.amazonaws.com. [54.65.164.9]) by smtp.gmail.com with ESMTPSA id hu13sm21462120pdb.72.2015.08.25.08.35.27 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 25 Aug 2015 08:35:31 -0700 (PDT) From: Peng Tao To: linux-nfs@vger.kernel.org Cc: Trond Myklebust , Anna Schumaker , Christoph Hellwig , Zach Brown , Darren Hart , bfields@fieldses.org, Jeff Layton , Peng Tao Subject: [PATCH RFC 08/11] nfs: get clone_blksize when probing fsinfo Date: Tue, 25 Aug 2015 23:33:46 +0800 Message-Id: <1440516829-116041-9-git-send-email-tao.peng@primarydata.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1440516829-116041-1-git-send-email-tao.peng@primarydata.com> References: <1440516829-116041-1-git-send-email-tao.peng@primarydata.com> Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Spam-Status: No, score=-8.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP NFSv42 CLONE operation is supposed to respect it. Signed-off-by: Peng Tao --- fs/nfs/client.c | 1 + fs/nfs/nfs4proc.c | 1 + fs/nfs/nfs4xdr.c | 25 +++++++++++++++++++++++++ include/linux/nfs4.h | 1 + include/linux/nfs_fs_sb.h | 1 + include/linux/nfs_xdr.h | 1 + 6 files changed, 30 insertions(+) diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 57c5a02..d6d5d2a 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -764,6 +764,7 @@ static void nfs_server_set_fsinfo(struct nfs_server *server, server->time_delta = fsinfo->time_delta; + server->clone_blksize = fsinfo->clone_blksize; /* We're airborne Set socket buffersize */ rpc_setbufsize(server->client, server->wsize + 100, server->rsize + 100); } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index fb51b75..ecf792c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -239,6 +239,7 @@ const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_FS_LAYOUT_TYPES, FATTR4_WORD2_LAYOUT_BLKSIZE + | FATTR4_WORD2_CLONE_BLKSIZE }; const u32 nfs4_fs_locations_bitmap[3] = { diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index a453bd1..f0dce533 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -4737,6 +4737,28 @@ static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, return 0; } +/* + * The granularity of a CLONE operation. + */ +static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap, + uint32_t *res) +{ + __be32 *p; + + dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); + *res = 0; + if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) { + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) { + print_overflow_msg(__func__, xdr); + return -EIO; + } + *res = be32_to_cpup(p); + bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE; + } + return 0; +} + static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) { unsigned int savep; @@ -4771,6 +4793,9 @@ static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); if (status) goto xdr_error; + status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize); + if (status) + goto xdr_error; status = verify_attr_len(xdr, savep, attrlen); xdr_error: diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index c0c695b..e7e7853 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -422,6 +422,7 @@ enum lock_type4 { #define FATTR4_WORD2_LAYOUT_TYPES (1UL << 0) #define FATTR4_WORD2_LAYOUT_BLKSIZE (1UL << 1) #define FATTR4_WORD2_MDSTHRESHOLD (1UL << 4) +#define FATTR4_WORD2_CLONE_BLKSIZE (1UL << 13) #define FATTR4_WORD2_SECURITY_LABEL (1UL << 16) /* MDS threshold bitmap bits */ diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 2fb163a..db00311 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -147,6 +147,7 @@ struct nfs_server { unsigned int acdirmax; unsigned int namelen; unsigned int options; /* extra options enabled by mount */ + unsigned int clone_blksize; /* granularity of a CLONE operation */ #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */ #define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */ diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 79918d6..e89dafd 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -141,6 +141,7 @@ struct nfs_fsinfo { __u32 lease_time; /* in seconds */ __u32 layouttype; /* supported pnfs layout driver */ __u32 blksize; /* preferred pnfs io block size */ + __u32 clone_blksize; /* granularity of a CLONE operation */ }; struct nfs_fsstat {