Date: Thu, 31 Dec 2020 09:07:22 +0000 From: tonyaxperkinsj3961@gmail.com To: svn-src-head@freebsd.org Subject: =?UTF-8?B?5qC55o2u5oKo55qE5Lqn5ZOB77yM5om+5Yiw5YWo55CD6ZyA5rGC5oKo5Lqn5ZOB55qE?= =?UTF-8?B?6YeH6LSt5ZWG?= Message-ID: <0000000000008b66f305b7bef384@google.com>
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SSd2ZSBpbnZpdGVkIHlvdSB0byBmaWxsIGluIHRoZSBmb2xsb3dpbmcgZm9ybToNCuagueaNruaC qOeahOS6p+WTge+8jOaJvuWIsOWFqOeQg+mcgOaxguaCqOS6p+WTgeeahOmHh+i0reWVhg0KDQpU byBmaWxsIGl0IGluLCB2aXNpdDoNCmh0dHBzOi8vZG9jcy5nb29nbGUuY29tL2Zvcm1zL2QvZS8x RkFJcFFMU2R1OElXVFVmdk9XaGdTZ2RPaVZDcHA2MW1BcEtSMklHUERGd25GOXVHUmVPWkhRdy92 aWV3Zm9ybT92Yz0wJmFtcDtjPTAmYW1wO3c9MSZhbXA7ZmxyPTAmYW1wO3VzcD1tYWlsX2Zvcm1f bGluaw0KDQpJJiMzOTt2ZSBpbnZpdGVkIHlvdSB0byBmaWxsIGluIGEgZm9ybToNCg0KR29vZ2xl IEZvcm1zOiBDcmVhdGUgYW5kIGFuYWx5c2Ugc3VydmV5cy4NCg== From owner-svn-src-head@freebsd.org Fri Jan 1 18:44:00 2021 Return-Path: <owner-svn-src-head@freebsd.org> Delivered-To: svn-src-head@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 30A8A4D05DF; Fri, 1 Jan 2021 18:44:00 +0000 (UTC) (envelope-from danfe@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132]) (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 "freefall.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4D6v7N0vbtz3h5K; Fri, 1 Jan 2021 18:44:00 +0000 (UTC) (envelope-from danfe@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1609526640; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=OnQsJ3S9OXmNL+UHheJOZU58BAXraCzW3fPlQwQtbgU=; b=ezO81IfDix5NawLJ1h7sEXBojoEB1VWZ9BR/rmb2qZK4cO8uZGNAzSQUf1pDg06IKDz4nc 6opTSrt/D7rQmPP7/gPj1dV9/+9o1MlEktL+b00TVpwqKY66DaxyIKe6qVIv6l52f2OWdN f7P7q67tzRv31T6WQ1PjhvivoIKncGAcS982xuLb5wrEUDjRT36ga/hvI4EuDnp91XBJiy Os0J3G4LrbTCqL/z+OAHpL4YGCaTM1xY/p6KayGlzMElIf2/+gcLBMRJzR6AO+SuQmMGHs TL1mXh2gK20L0cFjER40HgyHRyFfww/5GIXWtjRc9lT+P+7SHT4AvirI+htnZw== Received: by freefall.freebsd.org (Postfix, from userid 1033) id 165A94F4F; Fri, 1 Jan 2021 18:44:00 +0000 (UTC) Date: Fri, 1 Jan 2021 18:44:00 +0000 From: Alexey Dokuchaev <danfe@freebsd.org> To: Konstantin Belousov <kib@freebsd.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r365787 - head/sys/fs/tmpfs Message-ID: <20210101184400.GA77653@FreeBSD.org> References: <202009152219.08FMJGMw065722@repo.freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202009152219.08FMJGMw065722@repo.freebsd.org> ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1609526640; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=OnQsJ3S9OXmNL+UHheJOZU58BAXraCzW3fPlQwQtbgU=; b=kxFDMFtUZZfq56jwuukZ6P0J8iB5Xyq1Q4VEHjEWhGsPOF9fLM169U2PgEpiueuv88KBIG cRMiurmYvxyOUzfjVXlqqK/zCMMb28JFY/Z7lTgzSx674VRPCNFhAQ55V/93WAo/vbC+MZ swlzpL9Gqz+1SBB0TFe4Vo5QgGYD+WFABoGWlzGf/XUnZJsc+9KRxX17v0VD/HwjDdfSgK ytLuHGA1sYKCILZYFvVBXbSg3CSi2Ip8q+ZH7yY4R66+7TlilgxgPPLoAiPrRvHxbXRWXa 1a8EU+4TmwxuYU04KVNOVW9ZJwMbL9NkzSZ5xf+xEeFtByKVhEwjUnynIXlrjA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1609526640; a=rsa-sha256; cv=none; b=bfMuDOZb8MhgAlaPWu8p+Givm5WqrF+Y5HFxjvB4isjx7tLgAy5x0T0fLmEFljpIbd2GZc lu8IQW6aH/LXA/P/MgS7iYQg2NGbMEFLa5HNRfA7Rxy/rlEjxvyYOcHRHKAZOI8ippLbw3 TKe2jN0Yh7edJnAOOdBDe4sSdGwgXCcmSiDxO8A/yKPrph/Dbh426gvtiiNHQSwXrB6GBr IjY/egzwRwtrPabpZIheefHI00Rcii+/A5TCmgtObb9IDkQCT/6kA3ViD9cd92Kcg4h6uM 7vb44p8gOJNjaN5v7NTrfRgg2f48VUIN6DM3NmYCCo6yr0Q79GmU7LnDr4p+Nw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: SVN commit messages for the src tree for head/-current <svn-src-head.freebsd.org> List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-head>, <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head/>; List-Post: <mailto:svn-src-head@freebsd.org> List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help> List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-head>, <mailto:svn-src-head-request@freebsd.org?subject=subscribe> X-List-Received-Date: Fri, 01 Jan 2021 18:44:00 -0000 On Tue, Sep 15, 2020 at 10:19:16PM +0000, Konstantin Belousov wrote: > New Revision: 365787 > URL: https://svnweb.freebsd.org/changeset/base/365787 > > Log: > Add tmpfs page cache read support. > > Or it could be explained as lockless (for vnode lock) reads. Reads > are performed from the node tn_obj object. Tmpfs regular vnode object > lifecycle is significantly different from the normal OBJT_VNODE: it is > alive as far as ref_count > 0. This causes panics for me when building ports in the tmpfs-backed tinderbox. Easily reproducible: 1) ./tc tinderbuild ... -b "$@" 2) tail -f .../tmp/make.log4 # on the adjacent console 3) wait until the build job finishes 4) ^C in the "tail" window -> crash ... __mtx_lock_sleep() tmpfs_free_node() tmpfs_fo_close() _fdrop() closef() fdescfree_fds() fdescfree() exit1() sigexit() postsig() ast() doreit_ast() ./danfe
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