From patchwork Wed Dec 24 07:13:05 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Haynes X-Patchwork-Id: 5537051 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 [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 6E1DDBEEA8 for ; Wed, 24 Dec 2014 07:14:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 79608200B4 for ; Wed, 24 Dec 2014 07:14:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 89F11200F0 for ; Wed, 24 Dec 2014 07:14:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751881AbaLXHOE (ORCPT ); Wed, 24 Dec 2014 02:14:04 -0500 Received: from mail-ie0-f174.google.com ([209.85.223.174]:64990 "EHLO mail-ie0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751860AbaLXHOC (ORCPT ); Wed, 24 Dec 2014 02:14:02 -0500 Received: by mail-ie0-f174.google.com with SMTP id at20so7221789iec.33 for ; Tue, 23 Dec 2014 23:14:01 -0800 (PST) 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=+tIelx6h6Xr7TbIjsFbqL4+DFlREGIA1n37ymGOjGUk=; b=WtiLfQXE00/Iqc4qCPwR3yvYkLjG8EoFVyGavJIQVn4a/lCvMqs6uYy7XEGlSoOUGg 6kFO4wXgMjK2gKKvlbEq5tFn3UCMUc6Cqy/tIMubCccPmCGnIybO0e0W7TwU8Br/i8Oj gG9ffAR77I9BoMr85QUFlz9+n3y04IvZ68O94hOEV0Rc2KXGL98GKU+Fl0wYWG22gz4Q ek0u7XmLEvr1098vSWr0RzyVsHijzt9ScISJY9ffUjAOa20lUOxBP20TBxxmp43+1iUD 7H0COcAHGz5mKhAbLwFaEH0N5W3YwSd8IXu9Rgvoq/HlynBz0DZHKU7u5bgHiZbNWrSW 5ASQ== X-Gm-Message-State: ALoCoQks5IMr+0yeLfQfXhlYNoiHNdNULmeutt7W1368Mc6Bkk+gQkdeWqsbs4b1CEkI1ENRLsKy X-Received: by 10.43.52.197 with SMTP id vn5mr24492928icb.64.1419405240993; Tue, 23 Dec 2014 23:14:00 -0800 (PST) Received: from localhost.localdomain (c-68-40-185-14.hsd1.mi.comcast.net. [68.40.185.14]) by mx.google.com with ESMTPSA id 37sm8821410iog.39.2014.12.23.23.14.00 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 23 Dec 2014 23:14:00 -0800 (PST) From: Tom Haynes X-Google-Original-From: Tom Haynes To: Trond Myklebust Cc: Linux NFS Mailing List Subject: [PATCH v2 26/49] nfs41: don't use a layout if it is marked for returning Date: Tue, 23 Dec 2014 23:13:05 -0800 Message-Id: <1419405208-25975-27-git-send-email-loghyr@primarydata.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1419405208-25975-1-git-send-email-loghyr@primarydata.com> References: <1419405208-25975-1-git-send-email-loghyr@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=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 From: Peng Tao And if we are to return the same type of layouts, don't bother sending more layoutgets. Signed-off-by: Peng Tao Signed-off-by: Tom Haynes --- fs/nfs/nfs4proc.c | 1 + fs/nfs/pnfs.c | 23 ++++++++++++++++++----- fs/nfs/pnfs.h | 1 + 3 files changed, 20 insertions(+), 5 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 4883a42..b5bbe35 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -7530,6 +7530,7 @@ nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) return; if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, NFS_I(lgp->args.inode)->layout, + &lgp->args.range, lgp->args.ctx->state)) { rpc_exit(task, NFS4_OK); } diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 0bd149b..853b544 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -740,25 +740,37 @@ pnfs_layout_stateid_blocked(const struct pnfs_layout_hdr *lo, return !pnfs_seqid_is_newer(seqid, lo->plh_barrier); } +static bool +pnfs_layout_returning(const struct pnfs_layout_hdr *lo, + struct pnfs_layout_range *range) +{ + return test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags) && + (lo->plh_return_iomode == IOMODE_ANY || + lo->plh_return_iomode == range->iomode); +} + /* lget is set to 1 if called from inside send_layoutget call chain */ static bool -pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo, int lget) +pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo, + struct pnfs_layout_range *range, int lget) { return lo->plh_block_lgets || test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) || (list_empty(&lo->plh_segs) && - (atomic_read(&lo->plh_outstanding) > lget)); + (atomic_read(&lo->plh_outstanding) > lget)) || + pnfs_layout_returning(lo, range); } int pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo, + struct pnfs_layout_range *range, struct nfs4_state *open_state) { int status = 0; dprintk("--> %s\n", __func__); spin_lock(&lo->plh_inode->i_lock); - if (pnfs_layoutgets_blocked(lo, 1)) { + if (pnfs_layoutgets_blocked(lo, range, 1)) { status = -EAGAIN; } else if (!nfs4_valid_open_stateid(open_state)) { status = -EBADF; @@ -1192,6 +1204,7 @@ pnfs_find_lseg(struct pnfs_layout_hdr *lo, list_for_each_entry(lseg, &lo->plh_segs, pls_list) { if (test_bit(NFS_LSEG_VALID, &lseg->pls_flags) && + !test_bit(NFS_LSEG_LAYOUTRETURN, &lseg->pls_flags) && pnfs_lseg_range_match(&lseg->pls_range, range)) { ret = pnfs_get_lseg(lseg); break; @@ -1351,7 +1364,7 @@ lookup_again: goto out_unlock; } - if (pnfs_layoutgets_blocked(lo, 0)) + if (pnfs_layoutgets_blocked(lo, &arg, 0)) goto out_unlock; atomic_inc(&lo->plh_outstanding); spin_unlock(&ino->i_lock); @@ -1432,7 +1445,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) goto out_forget_reply; } - if (pnfs_layoutgets_blocked(lo, 1)) { + if (pnfs_layoutgets_blocked(lo, &lgp->args.range, 1)) { dprintk("%s forget reply due to state\n", __func__); goto out_forget_reply; } diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 3ce292e..4863991 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -249,6 +249,7 @@ void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, bool update_barrier); int pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo, + struct pnfs_layout_range *range, struct nfs4_state *open_state); int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, struct list_head *tmp_list,