From owner-freebsd-hackers@freebsd.org Mon Jun 3 20:38:32 2019 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id CF23415BD3E8 for ; Mon, 3 Jun 2019 20:38:32 +0000 (UTC) (envelope-from asomers@gmail.com) Received: from mail-lj1-f181.google.com (mail-lj1-f181.google.com [209.85.208.181]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id A6C586E521 for ; Mon, 3 Jun 2019 20:38:31 +0000 (UTC) (envelope-from asomers@gmail.com) Received: by mail-lj1-f181.google.com with SMTP id a21so2338448ljh.7 for ; Mon, 03 Jun 2019 13:38:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=SZ5iHcRx8eSiu0yXadrcAE6iEd2lJUZJbU0Eeph6DJk=; b=NNLZ7gnhw+atNzqA/1xsegJe2PUhSGFdgGe4edQGfs+KYUvkxDYpEUZO0/npJAd78y lyrSECuQ2Vjp42/CLc+liRyqGHAuu45JAnACCDlkgYwdrcjegM0tzoWeNwiVJpSc9Uw0 bAW6PvubncEViZA16QS45pbxRyOXeI6+tsKZ6oV7JWNJGc1mRi/aZFeNzYTOmi8KAdmq 4vxWdIGMyXNV/MFBxf1ZS+jOafDt6oiWXac3nzflfTn5kmqn5FHWNNvG+mLIfvwgRvo+ RdBNW6sZt2KMNIsnSS2FWI0UJqJDGN/YjRv8rH8ATM1D43VJl3JUE54/6E593KZSZJpO iA6g== X-Gm-Message-State: APjAAAWx2QGZAKxTy0rMocQQ3TsR6gkcshTCHV8LVs51WfpkdOoawMUd BOkPdK/n4iulZMAmHuKeNy+GbLLIZjO393616ByXVg== X-Google-Smtp-Source: APXvYqyRJJesnEi5tij7gbrXuOtR6oyktNOLGnUSY0igbMypNjPYX4pElFSyFWF/V8YBKlrQfJQ7dwVaRLRbeFRrfAM= X-Received: by 2002:a2e:5d9c:: with SMTP id v28mr14718651lje.32.1559594302886; Mon, 03 Jun 2019 13:38:22 -0700 (PDT) MIME-Version: 1.0 From: Alan Somers Date: Mon, 3 Jun 2019 14:38:11 -0600 Message-ID: Subject: How to VOP_RECLAIM on demand? To: FreeBSD Hackers Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: A6C586E521 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; spf=pass (mx1.freebsd.org: domain of asomers@gmail.com designates 209.85.208.181 as permitted sender) smtp.mailfrom=asomers@gmail.com X-Spamd-Result: default: False [-3.17 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; RCVD_COUNT_TWO(0.00)[2]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:209.85.128.0/17]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; DMARC_NA(0.00)[freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_TRACE(0.00)[0:+]; TO_DN_ALL(0.00)[]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; NEURAL_HAM_SHORT(-0.91)[-0.911,0]; RCVD_IN_DNSWL_NONE(0.00)[181.208.85.209.list.dnswl.org : 127.0.5.0]; IP_SCORE(-1.25)[ip: (-0.52), ipnet: 209.85.128.0/17(-3.39), asn: 15169(-2.29), country: US(-0.06)]; RCVD_TLS_LAST(0.00)[]; FORGED_SENDER(0.30)[asomers@freebsd.org,asomers@gmail.com]; R_DKIM_NA(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:209.85.128.0/17, country:US]; FROM_NEQ_ENVFROM(0.00)[asomers@freebsd.org,asomers@gmail.com]; SUBJECT_ENDS_QUESTION(1.00)[]; TO_DOM_EQ_FROM_DOM(0.00)[] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 03 Jun 2019 20:38:33 -0000 It would be useful if I could trigger VOP_RECLAIM on demand for a certain file or pathname. There are some edge cases in fusefs that I can't test otherwise. But I don't see any way to do it. Is such a thing possible? Would it be worth adding a special syscall for this purpose? It could be guarded with INVARIANTS so it wouldn't affect production builds. -Alan