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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT 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 55316C433B4 for ; Wed, 7 Apr 2021 01:53:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0CA9761396 for ; Wed, 7 Apr 2021 01:53:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344024AbhDGBxR (ORCPT ); Tue, 6 Apr 2021 21:53:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51152 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347839AbhDGBvx (ORCPT ); Tue, 6 Apr 2021 21:51:53 -0400 Received: from server.lespinasse.org (unknown [IPv6:2602:303:fcdc:ce10::100:0]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 09C87C06175F for ; Tue, 6 Apr 2021 18:51:41 -0700 (PDT) DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=lespinasse.org; i=@lespinasse.org; q=dns/txt; s=srv-11-ed; t=1617759902; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : from; bh=NVL7JPD4xKaWrJCrCCQAhxOaIfpgRthzGvlvMAcHMhY=; b=OESJ03wes2NwJiVPB7yoVDujCoaMAblbZeph6lEd4X/+SlFZQRQ4XSY8m+asM02bxuSyh JWXeIWR0c/wMGsPBw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lespinasse.org; i=@lespinasse.org; q=dns/txt; s=srv-11-rsa; t=1617759902; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : from; bh=NVL7JPD4xKaWrJCrCCQAhxOaIfpgRthzGvlvMAcHMhY=; b=NNc+BYnodpTFTj+++F+FgTCacE2ASOXUqbP91WbtiNnglS6UaYxtuEGt+wSqU2Blxqvdl vlnWo0J0DnkKTLm9oabmwHdK/K8/u/6GOD3CN9KYd6gcN983vIxvIcUWdB0+umwetM+RNiq Q4y/Yah0dxXG6hwrUQpaG8j0Mdsh9eBGK3GUFwrsFLgtiyxoartjV2cLKdWQibkgRzkzF6f tbbCTYe1r/njg5mU7JFS/OZ7Z38g/uRJzwbh4mIxv/M1GNvyUS86YzzPLbjVGRzzXG+IncQ EN/IYPAxtrN4Wr4ECCqxohOG16G6xNiN8qL8r5T8FqrcOgwBH8BorhL2AFAA== Received: from zeus.lespinasse.org (zeus.lespinasse.org [IPv6:fd00::150:0]) by server.lespinasse.org (Postfix) with ESMTPS id 6B2A61601D1; Tue, 6 Apr 2021 18:45:02 -0700 (PDT) Received: by zeus.lespinasse.org (Postfix, from userid 1000) id 5C25B19F30B; Tue, 6 Apr 2021 18:45:02 -0700 (PDT) From: Michel Lespinasse To: Linux-MM Cc: Laurent Dufour , Peter Zijlstra , Michal Hocko , Matthew Wilcox , Rik van Riel , Paul McKenney , Andrew Morton , Suren Baghdasaryan , Joel Fernandes , Rom Lemarchand , Linux-Kernel , Michel Lespinasse Subject: [RFC PATCH 01/37] mmap locking API: mmap_lock_is_contended returns a bool Date: Tue, 6 Apr 2021 18:44:26 -0700 Message-Id: <20210407014502.24091-2-michel@lespinasse.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210407014502.24091-1-michel@lespinasse.org> References: <20210407014502.24091-1-michel@lespinasse.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Change mmap_lock_is_contended to return a bool value, rather than an int which the callers are then supposed to interpret as a bool. This is to ensure consistency with other mmap lock API functions (such as the trylock functions). Signed-off-by: Michel Lespinasse --- include/linux/mmap_lock.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/mmap_lock.h b/include/linux/mmap_lock.h index 0540f0156f58..4e27f755766b 100644 --- a/include/linux/mmap_lock.h +++ b/include/linux/mmap_lock.h @@ -171,9 +171,9 @@ static inline void mmap_assert_write_locked(struct mm_struct *mm) VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_lock), mm); } -static inline int mmap_lock_is_contended(struct mm_struct *mm) +static inline bool mmap_lock_is_contended(struct mm_struct *mm) { - return rwsem_is_contended(&mm->mmap_lock); + return rwsem_is_contended(&mm->mmap_lock) != 0; } #endif /* _LINUX_MMAP_LOCK_H */ -- 2.20.1