From patchwork Tue Apr 9 19:22:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 13623168 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F158D157E8D for ; Tue, 9 Apr 2024 19:26:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712690776; cv=none; b=rSV6lyZiB6B5zxI3baZ4Son4BfoH8MAcQe1g18CGDDYoRZcRP0W2ZI1QZKHXLjw3mT+5VnIYsyVmB6WffJ8tQWodDRuZch0ziKNGxWctuu+bfD/lR36t3ceOpDBQLq6kS5Drm4JDjmNtwIjowkV4WMumTYz0OHVFovykzuJKyXc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712690776; c=relaxed/simple; bh=omqhDgTrChEETgeMiUUkVBBhOlzU6W6WQjgKatIId+E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TBOw6bJ+5FDfWOE7r+XFPaIxmZdoCCT/4ks5ypzbuJSBEDbuwXRVtnpDBAy6t1xeGFJgehi1bjPj8qxqN0x5/ipx1EdSVwY14TzaEosWdmCRk+FnhWKN3Z6RbURWVlwquU315Xx5Wc9IFzXiAWFz+zO7NRqvt+kpGfmdKmmpNpU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Hy2jgp6a; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Hy2jgp6a" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1712690773; 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=z56f15PtBl+UvHHvSB3Qx1+Za4NemO81qqaBL/Rijfc=; b=Hy2jgp6a9WdBLZx94x/do/sXJcDdjtSmkgjijMm0Dt9pBRzLptKfB57QuYJWVyIkz2JBPY uoxrgBWxk4JGa/ImnXDq13F/vxBx7QhL/24pOL0gWI7pcL7mkFfPFUgBeUicsFL+77xuDC qdVqsreswdNdm33KiSUe89WsK9yk/SU= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-14-Ea0Nh1k0ME2JTUIPiSiprg-1; Tue, 09 Apr 2024 15:26:09 -0400 X-MC-Unique: Ea0Nh1k0ME2JTUIPiSiprg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 3DD5B3C3D0CD; Tue, 9 Apr 2024 19:26:08 +0000 (UTC) Received: from t14s.redhat.com (unknown [10.39.192.106]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6B0B440C6DAE; Tue, 9 Apr 2024 19:25:56 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, linux-doc@vger.kernel.org, cgroups@vger.kernel.org, linux-sh@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, David Hildenbrand , Andrew Morton , "Matthew Wilcox (Oracle)" , Peter Xu , Ryan Roberts , Yin Fengwei , Yang Shi , Zi Yan , Jonathan Corbet , Hugh Dickins , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Chris Zankel , Max Filippov , Muchun Song , Miaohe Lin , Naoya Horiguchi , Richard Chang Subject: [PATCH v1 13/18] mm/filemap: use folio_mapcount() in filemap_unaccount_folio() Date: Tue, 9 Apr 2024 21:22:56 +0200 Message-ID: <20240409192301.907377-14-david@redhat.com> In-Reply-To: <20240409192301.907377-1-david@redhat.com> References: <20240409192301.907377-1-david@redhat.com> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 We want to limit the use of page_mapcount() to the places where it is absolutely necessary. Let's use folio_mapcount() instead of filemap_unaccount_folio(). No functional change intended, because we're only dealing with small folios. Signed-off-by: David Hildenbrand --- mm/filemap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/filemap.c b/mm/filemap.c index c668e11cd6ef..d4aa82ad5b59 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -168,7 +168,7 @@ static void filemap_unaccount_folio(struct address_space *mapping, add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); if (mapping_exiting(mapping) && !folio_test_large(folio)) { - int mapcount = page_mapcount(&folio->page); + int mapcount = folio_mapcount(folio); if (folio_ref_count(folio) >= mapcount + 2) { /*