From owner-dev-commits-src-branches@freebsd.org Wed Jul 7 11:11:04 2021 Return-Path: Delivered-To: dev-commits-src-branches@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 8A43365324D; Wed, 7 Jul 2021 11:11:04 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4GKcDR6kLkz4fnC; Wed, 7 Jul 2021 11:11:03 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 258704606; Wed, 7 Jul 2021 11:11:03 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 167BB3FA040970; Wed, 7 Jul 2021 11:11:03 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 167BB3tB040969; Wed, 7 Jul 2021 11:11:03 GMT (envelope-from git) Date: Wed, 7 Jul 2021 11:11:03 GMT Message-Id: <202107071111.167BB3tB040969@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Konstantin Belousov Subject: git: 9487bd8ee37e - stable/13 - ufs_rename(): only do softdep_prerename() when other thread changed a vnode MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: 9487bd8ee37e6a0394946909636267f644ee8df0 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-branches@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commits to the stable branches of the FreeBSD src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Jul 2021 11:11:04 -0000 The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=9487bd8ee37e6a0394946909636267f644ee8df0 commit 9487bd8ee37e6a0394946909636267f644ee8df0 Author: Konstantin Belousov AuthorDate: 2021-04-29 22:39:57 +0000 Commit: Konstantin Belousov CommitDate: 2021-07-07 10:23:58 +0000 ufs_rename(): only do softdep_prerename() when other thread changed a vnode (cherry picked from commit f7565466622a411a50522f23528faeb1e57d4571) --- sys/ufs/ufs/ufs_vnops.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/sys/ufs/ufs/ufs_vnops.c b/sys/ufs/ufs/ufs_vnops.c index 2154f7aa7f95..b0fb1b74b900 100644 --- a/sys/ufs/ufs/ufs_vnops.c +++ b/sys/ufs/ufs/ufs_vnops.c @@ -1248,6 +1248,7 @@ ufs_rename(ap) int error = 0; struct mount *mp; ino_t ino; + seqc_t fdvp_s, fvp_s, tdvp_s, tvp_s; bool want_seqc_end; want_seqc_end = false; @@ -1271,6 +1272,8 @@ ufs_rename(ap) mp = NULL; goto releout; } + + fdvp_s = fvp_s = tdvp_s = tvp_s = SEQC_MOD; relock: /* * We need to acquire 2 to 4 locks depending on whether tvp is NULL @@ -1364,10 +1367,20 @@ relock: } } - if (DOINGSUJ(fdvp)) { + if (DOINGSUJ(fdvp) && + (seqc_in_modify(fdvp_s) || !vn_seqc_consistent(fdvp, fdvp_s) || + seqc_in_modify(fvp_s) || !vn_seqc_consistent(fvp, fvp_s) || + seqc_in_modify(tdvp_s) || !vn_seqc_consistent(tdvp, tdvp_s) || + (tvp != NULL && (seqc_in_modify(tvp_s) || + !vn_seqc_consistent(tvp, tvp_s))))) { error = softdep_prerename(fdvp, fvp, tdvp, tvp); if (error != 0) { if (error == ERELOOKUP) { + fdvp_s = vn_seqc_read_any(fdvp); + fvp_s = vn_seqc_read_any(fvp); + tdvp_s = vn_seqc_read_any(tdvp); + if (tvp != NULL) + tvp_s = vn_seqc_read_any(tvp); atomic_add_int(&rename_restarts, 1); goto relock; }