From patchwork Thu Feb 8 08:48:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 13549464 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 15B03535DC; Thu, 8 Feb 2024 08:48:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707382096; cv=none; b=TkhG1FNAScBVz1u8Fku4phIJ4141RgWDDzfEPykNSrUAoSAdMgmMfnryh8LQN9gdBDCtI6DSTKTdLH8Xu4YlDHmwyFQI1QvPG2aQP0UVwhPxmRZ9He2a1tLXYC1GhmO7pf3+l3Bc1FgvnxusQuSlVKisO9xCwYF2ZkyaeX3rxcs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707382096; c=relaxed/simple; bh=6KDIdGnLvGPYx6pxiwel3ZAd2B57/3ZoEDOIO6r0yZk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=aQl3cv4PuJvKvMmF+snGP3kYMzNN8QEeM2A7NBSRgl0tgR8D+vEFyw8e1F+9dzX/IkWi0IDKagsf/BSUOKmpR+e/FfODK/WDfoVvbag64B6755l9O0bLeAdl1fCDZU8X63RsXZYiP1bX0LCTRvUchcas1OWfMDqf52xSAzUI8c0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 624F51FB; Thu, 8 Feb 2024 00:48:54 -0800 (PST) Received: from a077893.arm.com (unknown [10.163.44.57]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id ECCCB3F762; Thu, 8 Feb 2024 00:48:09 -0800 (PST) From: Anshuman Khandual To: linux-mm@kvack.org Cc: Anshuman Khandual , Andrew Morton , David Hildenbrand , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH] fs/proc/task_mmu: Add display flag for VM_MAYOVERLAY Date: Thu, 8 Feb 2024 14:18:05 +0530 Message-Id: <20240208084805.1252337-1-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 VM_UFFD_MISSING flag is mutually exclussive with VM_MAYOVERLAY flag as they both use the same bit position i.e 0x00000200 in the vm_flags. Let's update show_smap_vma_flags() to display the correct flags depending on CONFIG_MMU. Cc: Andrew Morton Cc: David Hildenbrand Cc: linux-kernel@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Anshuman Khandual Reviewed-by: David Hildenbrand --- This applies on v6.8-rc3 fs/proc/task_mmu.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 3f78ebbb795f..1c4eb25cfc17 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -681,7 +681,11 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma) [ilog2(VM_HUGEPAGE)] = "hg", [ilog2(VM_NOHUGEPAGE)] = "nh", [ilog2(VM_MERGEABLE)] = "mg", +#ifdef CONFIG_MMU [ilog2(VM_UFFD_MISSING)]= "um", +#else + [ilog2(VM_MAYOVERLAY)] = "ov", +#endif /* CONFIG_MMU */ [ilog2(VM_UFFD_WP)] = "uw", #ifdef CONFIG_ARM64_MTE [ilog2(VM_MTE)] = "mt",