From owner-dev-commits-src-all@freebsd.org Sat May 22 18:31:04 2021 Return-Path: Delivered-To: dev-commits-src-all@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 980DA6348AF; Sat, 22 May 2021 18:31:04 +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 4FnX9N2YqRz4Z42; Sat, 22 May 2021 18:31:04 +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 3D6BDF79; Sat, 22 May 2021 18:31:04 +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 14MIV4PI018012; Sat, 22 May 2021 18:31:04 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 14MIV4rs018011; Sat, 22 May 2021 18:31:04 GMT (envelope-from git) Date: Sat, 22 May 2021 18:31:04 GMT Message-Id: <202105221831.14MIV4rs018011@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Mateusz Guzik Subject: git: a9d418fbb843 - stable/13 - zfs: use vn_seqc_read_notmodify for racing .. lookups MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: mjg X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: a9d418fbb843927fe193d19616ddef48c50ae206 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 22 May 2021 18:31:04 -0000 The branch stable/13 has been updated by mjg: URL: https://cgit.FreeBSD.org/src/commit/?id=a9d418fbb843927fe193d19616ddef48c50ae206 commit a9d418fbb843927fe193d19616ddef48c50ae206 Author: Mateusz Guzik AuthorDate: 2021-04-22 13:18:39 +0000 Commit: Mateusz Guzik CommitDate: 2021-05-22 18:30:50 +0000 zfs: use vn_seqc_read_notmodify for racing .. lookups Catching an in-flight unlocked vnode is fine here. Reported by; pho (cherry picked from commit 7ea3223c7822d20acfc907683fd0153d623185b3) --- sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c b/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c index a1e9c359b893..50454cad2468 100644 --- a/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c +++ b/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c @@ -807,7 +807,7 @@ zfs_lookup(vnode_t *dvp, const char *nm, vnode_t **vpp, ZFS_ENTER(zfsvfs); ZFS_VERIFY_ZP(zdp); - dvp_seqc = vn_seqc_read_any(dvp); + dvp_seqc = vn_seqc_read_notmodify(dvp); *vpp = NULL;