From nobody Fri Jan 28 19:28:12 2022 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 1B2CA198DB5B; Fri, 28 Jan 2022 19:28:13 +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 4JlnYT0C2Yz3Nfw; Fri, 28 Jan 2022 19:28:13 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1643398093; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=7pCXH5YDfLcYUixml5fyNeQBQ2WS0V+wp06k1KRDoww=; b=CVG1k4+tE2ehmZOeokkwf3jg4Mtlr1ocPq+YfK6YMARnHORNzlSN/yYpp5J8CjNstjGOwl GakHhN+KGSabuq298JBKjyxT2PTr1NFQRm7JdWfyzcrQyhMHpiDpeJMcx8s2wZ6DAa3BrT EMMrQ94hp2BGPgZFWgftu687TPvgHyCE5UaMk++cmzeTBrNOqWQrpGiUW1ne6s9NmHsPmP IS8ij99dxdU4G5XlmUpu/CHBI5oWcb3SFqqOfibXBjxH4ItDrIP1q0VVLstjYE94KGQZzm iwUxjuDJsOa/hKKCqpRiU6LuKyyFhgHXcrGJhK6stJeLjvaoeezmfeYyURyF/Q== 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 DAECC2FE96; Fri, 28 Jan 2022 19:28:12 +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 20SJSCmg070294; Fri, 28 Jan 2022 19:28:12 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 20SJSCBs070293; Fri, 28 Jan 2022 19:28:12 GMT (envelope-from git) Date: Fri, 28 Jan 2022 19:28:12 GMT Message-Id: <202201281928.20SJSCBs070293@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Alexander Motin Subject: git: 29998bf2ac4c - main - glabel: Set G_CF_DIRECT_SEND/RECEIVE for taste consumer. List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: mav X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 29998bf2ac4cc3ac49827336655bdbcb755eeffc Auto-Submitted: auto-generated ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1643398093; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=7pCXH5YDfLcYUixml5fyNeQBQ2WS0V+wp06k1KRDoww=; b=hwWXyhhjkQKD93u9TB9aZObrsip7BJwwzPK/3cpp8dfNpg9irZ1jxQrJYRup00YvqRO+vl BloSC+vll82PlndbEgZ2UiDH9HabadFEyAe56aJlZ3Da0J/dR787PlMFSMvTK/m1b6iakC riBqt/85oApfppBrmMT/DKOZfa+QDiDXRCbRu795v9iEpliF/X+Dk0GUtua7FCGOZ5poix bKXrFKE5UrUu5Gw622WlqJm6CpHTFpFGkFxOdYQ+w1yHtyXQdSSBRNr9mGSvj2VRHo09pa GzKVi8TfWEpiaDidHJPWuodbdhXSh6gzJX6cukNbprgeNkuAtw0j62Zff97ygw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1643398093; a=rsa-sha256; cv=none; b=hhY8eKPE+hrXA9npN9Vai0QvfMKoJ9bm/aYBFtZ7ce6SSMeY/2Jx6PuPhyAWJTJzXJdE3q A56UmM2v2aiJuJTg3ARle2982e/c8dQd+n58/rIae/uvII7lY2d6t8ENksZn4axjpbuOTi RWrqc9dUC/irvRACPl57q5VWkk7vdXJfi7BI6pqkQGDCix+SliLD4jtxPwVLw+XQE9TjIz 73zrh5f1EfmUgEtPY7EmhIm2ZLId1ueQkS1Rd9xyS2efd9oG6RyE2jj3WnPZPZgXDUpHxm fWil1UXcU049XgvKpPGPDQV2HebYS/wG4eF6R2SNGT4+Mf9DUOAkhrEqm8/WMw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by mav: URL: https://cgit.FreeBSD.org/src/commit/?id=29998bf2ac4cc3ac49827336655bdbcb755eeffc commit 29998bf2ac4cc3ac49827336655bdbcb755eeffc Author: Alexander Motin AuthorDate: 2022-01-28 19:22:41 +0000 Commit: Alexander Motin CommitDate: 2022-01-28 19:22:41 +0000 glabel: Set G_CF_DIRECT_SEND/RECEIVE for taste consumer. All I/O requests through the taste consumer are synchronous, done with g_read_data() and without any locks held. It makes no sense to delegate the I/O to g_down/g_up threads. This removes many of context switches during disk retaste. MFC after: 2 weeks --- sys/geom/label/g_label.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sys/geom/label/g_label.c b/sys/geom/label/g_label.c index 1df7e799b014..2244931cd19b 100644 --- a/sys/geom/label/g_label.c +++ b/sys/geom/label/g_label.c @@ -402,6 +402,7 @@ g_label_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) gp->access = g_label_access_taste; gp->orphan = g_label_orphan_taste; cp = g_new_consumer(gp); + cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; if (g_attach(cp, pp) != 0) goto end2; if (g_access(cp, 1, 0, 0) != 0)