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=-17.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL 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 54BF1C43603 for ; Sun, 8 Dec 2019 18:35:22 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DC40220663 for ; Sun, 8 Dec 2019 18:35:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="X8LjnoaR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DC40220663 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 478F66B2276; Sun, 8 Dec 2019 13:35:21 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 429456B2277; Sun, 8 Dec 2019 13:35:21 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 340096B2278; Sun, 8 Dec 2019 13:35:21 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0233.hostedemail.com [216.40.44.233]) by kanga.kvack.org (Postfix) with ESMTP id 1F8646B2276 for ; Sun, 8 Dec 2019 13:35:21 -0500 (EST) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id CA8F7181AEF31 for ; Sun, 8 Dec 2019 18:35:20 +0000 (UTC) X-FDA: 76242826800.14.ink45_118704370da1d X-HE-Tag: ink45_118704370da1d X-Filterd-Recvd-Size: 3475 Received: from mail-pf1-f201.google.com (mail-pf1-f201.google.com [209.85.210.201]) by imf14.hostedemail.com (Postfix) with ESMTP for ; Sun, 8 Dec 2019 18:35:20 +0000 (UTC) Received: by mail-pf1-f201.google.com with SMTP id h22so7748637pfo.18 for ; Sun, 08 Dec 2019 10:35:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=ixWIA9Xc+ETFQTzqRrRYkwHRDWzy5HKinpXuACLsz9s=; b=X8LjnoaR7GpaoOPBGLL4k3WuIlrf8FLlHQkZ9XafcLIvGj8BeyML+sx8jG7mBCR2oH /UV9k8l9nffa3wGxrpHvPgyE8/wQrUm/0pAlDXHmHhLlyxwCZ3mYSypOmqYLPV8w7K3j MRSkdR7QZ7VfwYpbHPgQyBi01pcdVbZjuhmWVp2x1zkXo0YOTh04wkF7wP0vBtzXqJ0X YE8hDo5nt7ortxZQJZS8crVJXU8h+NKeG3hjaKC2NxPH7ORoglXxXmuxRhIGE8p+bRtF iUAvRJXgy1MX4mxbgiYbXhcssEYmrobZXdY7fo4MPxo/kry/W7qje7lDx46zUofdTIuS 3BNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=ixWIA9Xc+ETFQTzqRrRYkwHRDWzy5HKinpXuACLsz9s=; b=gFTsa8vA+rmSGyUjGHAsZKlxbXhnzR9bvy1Bqoz7U4YapMRS884CGF+JDfJVrnTwt5 rf5h2rTuelpxYgvDwwKAS3Q9MsG3daebDMPJ2o/mqKbXj9swBfQJfhasOfcEs4Fn7Gby yKEpIhTaAQ5McWTxlMFddZYCDAAJ9e/gNBi2MuVsy2YwhLvYtnihQYLy8zIbEeMutdc6 MLe7tiV8GxGFfRekQMMUcJLOsskCqbn6hRscbHpEqWv4EHsOa1eFRs+tnXYzfymGjvnQ aCoSIyVoMIxmkqnac6o0ScrAVO8wYf5oYsbuRW7XJNKRYjrKLj8jKSwem/3ySBBr78lv gh5A== X-Gm-Message-State: APjAAAVPb6tswPo4KFEbfuZZf4c8IzR8+7vPnsgVHpBZSqzD3u4S9EXL 9yr2esH/SswEmTO+D7p2AgeddIPyVDI= X-Google-Smtp-Source: APXvYqxJDXiMqtoqT89fWhET1T4Uha1d/oTBLwOyi1Od4C660mnuOKD/jnEMMYHWk8RdBuDq/Y/d37eF1/E= X-Received: by 2002:a63:3756:: with SMTP id g22mr14745071pgn.375.1575830118968; Sun, 08 Dec 2019 10:35:18 -0800 (PST) Date: Sun, 8 Dec 2019 11:35:07 -0700 Message-Id: <20191208183508.89177-1-yuzhao@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.24.0.393.g34dc348eaf-goog Subject: [PATCH] mm: clean up obsolete check on space in page->flags From: Yu Zhao To: Andrew Morton , Arnd Bergmann Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Yu Zhao Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The check in linux/mm.h was intended to make sure we don't overrun page flags. But it's obsolete because it doesn't include LAST_CPUPID_WIDTH nor KASAN_TAG_WIDTH. Just remove check since we already have it covered in linux/page-flags-layout.h (near the end of the file). Signed-off-by: Yu Zhao --- include/linux/mm.h | 4 ---- 1 file changed, 4 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index c97ea3b694e6..2e7596cce9d8 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -921,10 +921,6 @@ vm_fault_t finish_mkwrite_fault(struct vm_fault *vmf); #define ZONEID_PGSHIFT (ZONEID_PGOFF * (ZONEID_SHIFT != 0)) -#if SECTIONS_WIDTH+NODES_WIDTH+ZONES_WIDTH > BITS_PER_LONG - NR_PAGEFLAGS -#error SECTIONS_WIDTH+NODES_WIDTH+ZONES_WIDTH > BITS_PER_LONG - NR_PAGEFLAGS -#endif - #define ZONES_MASK ((1UL << ZONES_WIDTH) - 1) #define NODES_MASK ((1UL << NODES_WIDTH) - 1) #define SECTIONS_MASK ((1UL << SECTIONS_WIDTH) - 1) -- 2.24.0.393.g34dc348eaf-goog