From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2454CC47080 for ; Mon, 31 May 2021 17:09:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECEE661042 for ; Mon, 31 May 2021 17:09:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232972AbhEaRKm (ORCPT ); Mon, 31 May 2021 13:10:42 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:25979 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234580AbhEaRDW (ORCPT ); Mon, 31 May 2021 13:03:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1622480501; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=kNVwivzY2ftvvPnbhicqdoxbrU7Ly5BCIYSmWrLH5jU=; b=PvrYm1AuEwRIRLFEBQ0jKJ8L3s9n90brO3yX5cO7M28zsmmJaxbX6CptD/IcFAoArVG1Jk U0tvuUt+KlQ7dAjZUAj3uvaOLKaPV2mgQf7nugUXq4nk4TPgg7s0jQxiNdEzo8NoBXjXfw YYevwqqE2tITL5lVc4EwOBc27UDzbpk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-454-Fp09B0nPPuia4SiIu_x3YQ-1; Mon, 31 May 2021 13:01:39 -0400 X-MC-Unique: Fp09B0nPPuia4SiIu_x3YQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B7421107ACED; Mon, 31 May 2021 17:01:38 +0000 (UTC) Received: from max.com (unknown [10.40.192.80]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7F3992BFDE; Mon, 31 May 2021 17:01:34 +0000 (UTC) From: Andreas Gruenbacher To: Linus Torvalds Cc: Andreas Gruenbacher , cluster-devel@redhat.com, linux-kernel@vger.kernel.org, Alexander Viro , Jan Kara , Matthew Wilcox Subject: [RFC 3/9] gfs2: Add gfs2_holder_is_compatible helper Date: Mon, 31 May 2021 19:01:17 +0200 Message-Id: <20210531170123.243771-4-agruenba@redhat.com> In-Reply-To: <20210531170123.243771-1-agruenba@redhat.com> References: <20210531170123.243771-1-agruenba@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This function checks if a glock holder's locking state is compatible with another locking state. Signed-off-by: Andreas Gruenbacher --- fs/gfs2/glock.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index 31a8f2f649b5..f0ef6fd24ba4 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -49,6 +49,20 @@ enum { #define LM_ST_DEFERRED 2 #define LM_ST_SHARED 3 +static inline bool gfs2_holder_is_compatible(struct gfs2_holder *gh, int state) { + BUG_ON(state == LM_ST_UNLOCKED); + switch(gh->gh_state) { + case LM_ST_EXCLUSIVE: + return state != LM_ST_DEFERRED; + case LM_ST_DEFERRED: + return state == LM_ST_DEFERRED; + case LM_ST_SHARED: + return state == LM_ST_SHARED; + default: + return false; + } +} + /* * lm_lock() flags * -- 2.26.3 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Gruenbacher Date: Mon, 31 May 2021 19:01:17 +0200 Subject: [Cluster-devel] [RFC 3/9] gfs2: Add gfs2_holder_is_compatible helper In-Reply-To: <20210531170123.243771-1-agruenba@redhat.com> References: <20210531170123.243771-1-agruenba@redhat.com> Message-ID: <20210531170123.243771-4-agruenba@redhat.com> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit This function checks if a glock holder's locking state is compatible with another locking state. Signed-off-by: Andreas Gruenbacher --- fs/gfs2/glock.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index 31a8f2f649b5..f0ef6fd24ba4 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -49,6 +49,20 @@ enum { #define LM_ST_DEFERRED 2 #define LM_ST_SHARED 3 +static inline bool gfs2_holder_is_compatible(struct gfs2_holder *gh, int state) { + BUG_ON(state == LM_ST_UNLOCKED); + switch(gh->gh_state) { + case LM_ST_EXCLUSIVE: + return state != LM_ST_DEFERRED; + case LM_ST_DEFERRED: + return state == LM_ST_DEFERRED; + case LM_ST_SHARED: + return state == LM_ST_SHARED; + default: + return false; + } +} + /* * lm_lock() flags * -- 2.26.3