Received: by 2002:a25:5b86:0:0:0:0:0 with SMTP id p128csp1667514ybb; Fri, 29 Mar 2019 08:55:51 -0700 (PDT) X-Google-Smtp-Source: APXvYqxxoSuMLaXTFqQEzF/zfLTxVrwC5pfYbnpGGIWrSR33j2O/xQhtOpiE/v1Sk1aBLVCIYVw8 X-Received: by 2002:a62:1d90:: with SMTP id d138mr12436566pfd.232.1553874951251; Fri, 29 Mar 2019 08:55:51 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1553874951; cv=none; d=google.com; s=arc-20160816; b=e2gWCoSlVhZSEXbnX8DI4bwCFzsRR+GdDpNnjYfDf1CMWKipZTIsgOVRbWigYGulgs d9lO61aJzdQ4B74Yr+lKaSlYxdCal5Y0sshavHE1M+i8Paqj62DOAIkGBZG6fgGhFTlX MKpfxgMIt43+uNSytsDJLzKUwOj+NEE2fitQCGW+HxH2v7rI8ILYdkLdc7HpvkR1M0ks //euQYtOD0JGSVSvhI897vBbHSkLaLmbMVav/KPqERmMVC6TK70xQPwRx8To3hRpWTsI WLSSRsIeWgzxX0Q5+kjuMbO8HYjCGB1HKYHN5IZBwtQudAtsdV5fh5j2u3As712SRXNP eu/Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=12cZWUdzwG623jsKIC74st+CmRQm9yizirpU53zblfY=; b=XhuAgM5YmKkC548yzMJacOCULxe3DDDAB394TGSE82MvQi3IXZ0R86zNuqXdYNmqlt umeT/WNsZSuuJ+Rj5t3KOKMfQ9s93jRrLg/uqzHXh0MAuC0NAD8Kekm0EnjlJmpRPJif txFwQGnZkat6zhg9CmYqSP+woujpTI8VvcPaJGcW/ggXr8tqJMUIJzK+ciavNiuAXgzP ya738yKYLwRH8nVFv+OPwIRs3+YsmRyRINB5eiAqQTKEQYgHPhwlxqFZJkHj9dJGdT2S TVqnKRtysEVa6i/sgHxSxjVVvk+sy0EwtHaY82ZtP1DWBEL1dJ+oJwTaJwyPVn7ns/ib AtaQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@brauner.io header.s=google header.b=gXuFZlKu; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 190si2170204pgj.123.2019.03.29.08.55.35; Fri, 29 Mar 2019 08:55:51 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@brauner.io header.s=google header.b=gXuFZlKu; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729750AbfC2Pyw (ORCPT + 99 others); Fri, 29 Mar 2019 11:54:52 -0400 Received: from mail-wr1-f65.google.com ([209.85.221.65]:34210 "EHLO mail-wr1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728902AbfC2Pyq (ORCPT ); Fri, 29 Mar 2019 11:54:46 -0400 Received: by mail-wr1-f65.google.com with SMTP id p10so3224104wrq.1 for ; Fri, 29 Mar 2019 08:54:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brauner.io; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=12cZWUdzwG623jsKIC74st+CmRQm9yizirpU53zblfY=; b=gXuFZlKuWtdFO8H7JOli2u+a7GRT9Qh3nSTr58vyvs14dmHh0rZVHnpiyAhVSjnZDH y5+AFzqB12dHW6qvT5qWcs8yhiskqHUdUPQNjCy0tFoK+pBiaMPOUbnBgIw8Y43d1VkS pJRFdOSWfTIeUaBqP4e8nSszl3bcihZb7OPhrXjAIykhGqjXO9rNCht5qxE7pWz/v9B0 L2uJDVA2GBXCSTAUiMhSNTg3vK7bNc/Tx6AG9SNTqPuxbFJDq07DF81hPnbFXQLniN3N O7fT7xJSH7EPA4UXQQYIprBmIlVUIqGhf54Ef9Mrw5WAS69O+fhQlkw7PHcVrJBU4yw6 g/QA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=12cZWUdzwG623jsKIC74st+CmRQm9yizirpU53zblfY=; b=a9OXC3/eG3DwxgijgVktl7nbSHYmLQASV97HIuSOFE6us307hJZ3P1gSh5Au893mKN OjH17uZCPd4UJnNEj6Zjpa8Pe0jpvDiz2zjhDvj8U4JCdo2ceMznQKzf+Mw/kfbclat+ qcbaT+Im/uyWoGlZEhM7sIpdxto+D5lQjumVW6cga0MhBei8X3XDj9D4niKG8NYkL7aA pLNqlvFIB1EJz8TRIcNYcAH+AhlgaUtpVdsgVBK5XyyB7S7JM7aRDwBivwpzKB1V2lsw shMATUpaS3YwKqdVEO7TwX2O3nJXpWa505eXjQKJGmkAvWmgOHrAdcg6AYlxytV6z3yw 4IVw== X-Gm-Message-State: APjAAAVKrTZw/dCznhzAkFx2sLSabeT2WqWzbFVzGoJwTwgHC5V6P5O6 nSDy6VkSLjA3qLbW1CFmLzc0hg== X-Received: by 2002:adf:9dcf:: with SMTP id q15mr30365517wre.205.1553874884064; Fri, 29 Mar 2019 08:54:44 -0700 (PDT) Received: from localhost.localdomain (p2E5A5955.dip0.t-ipconnect.de. [46.90.89.85]) by smtp.gmail.com with ESMTPSA id e1sm4177959wrw.66.2019.03.29.08.54.42 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 29 Mar 2019 08:54:43 -0700 (PDT) From: Christian Brauner To: jannh@google.com, luto@kernel.org, dhowells@redhat.com, serge@hallyn.com, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Cc: arnd@arndb.de, ebiederm@xmission.com, khlebnikov@yandex-team.ru, keescook@chromium.org, adobriyan@gmail.com, tglx@linutronix.de, mtk.manpages@gmail.com, bl0pbl33p@gmail.com, ldv@altlinux.org, akpm@linux-foundation.org, oleg@redhat.com, nagarathnam.muthusamy@oracle.com, cyphar@cyphar.com, viro@zeniv.linux.org.uk, joel@joelfernandes.org, dancol@google.com, Christian Brauner Subject: [PATCH v2 1/5] Make anon_inodes unconditional Date: Fri, 29 Mar 2019 16:54:21 +0100 Message-Id: <20190329155425.26059-2-christian@brauner.io> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190329155425.26059-1-christian@brauner.io> References: <20190329155425.26059-1-christian@brauner.io> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Howells Make the anon_inodes facility unconditional so that it can be used by core VFS code and the pidfd_open() syscall. Signed-off-by: David Howells Signed-off-by: Al Viro [christian@brauner.io: adapt commit message to mention pidfd_open()] Signed-off-by: Christian Brauner --- arch/arm/kvm/Kconfig | 1 - arch/arm64/kvm/Kconfig | 1 - arch/mips/kvm/Kconfig | 1 - arch/powerpc/kvm/Kconfig | 1 - arch/s390/kvm/Kconfig | 1 - arch/x86/Kconfig | 1 - arch/x86/kvm/Kconfig | 1 - drivers/base/Kconfig | 1 - drivers/char/tpm/Kconfig | 1 - drivers/dma-buf/Kconfig | 1 - drivers/gpio/Kconfig | 1 - drivers/iio/Kconfig | 1 - drivers/infiniband/Kconfig | 1 - drivers/vfio/Kconfig | 1 - fs/Makefile | 2 +- fs/notify/fanotify/Kconfig | 1 - fs/notify/inotify/Kconfig | 1 - init/Kconfig | 10 ---------- 18 files changed, 1 insertion(+), 27 deletions(-) diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig index 3f5320f46de2..f591026347a5 100644 --- a/arch/arm/kvm/Kconfig +++ b/arch/arm/kvm/Kconfig @@ -22,7 +22,6 @@ config KVM bool "Kernel-based Virtual Machine (KVM) support" depends on MMU && OF select PREEMPT_NOTIFIERS - select ANON_INODES select ARM_GIC select ARM_GIC_V3 select ARM_GIC_V3_ITS diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index a3f85624313e..a67121d419a2 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -23,7 +23,6 @@ config KVM depends on OF select MMU_NOTIFIER select PREEMPT_NOTIFIERS - select ANON_INODES select HAVE_KVM_CPU_RELAX_INTERCEPT select HAVE_KVM_ARCH_TLB_FLUSH_ALL select KVM_MMIO diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig index 4528bc9c3cb1..eac25aef21e0 100644 --- a/arch/mips/kvm/Kconfig +++ b/arch/mips/kvm/Kconfig @@ -21,7 +21,6 @@ config KVM depends on MIPS_FP_SUPPORT select EXPORT_UASM select PREEMPT_NOTIFIERS - select ANON_INODES select KVM_GENERIC_DIRTYLOG_READ_PROTECT select HAVE_KVM_VCPU_ASYNC_IOCTL select KVM_MMIO diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index bfdde04e4905..f53997a8ca62 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -20,7 +20,6 @@ if VIRTUALIZATION config KVM bool select PREEMPT_NOTIFIERS - select ANON_INODES select HAVE_KVM_EVENTFD select HAVE_KVM_VCPU_ASYNC_IOCTL select SRCU diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig index 767453faacfc..1816ee48eadd 100644 --- a/arch/s390/kvm/Kconfig +++ b/arch/s390/kvm/Kconfig @@ -21,7 +21,6 @@ config KVM prompt "Kernel-based Virtual Machine (KVM) support" depends on HAVE_KVM select PREEMPT_NOTIFIERS - select ANON_INODES select HAVE_KVM_CPU_RELAX_INTERCEPT select HAVE_KVM_VCPU_ASYNC_IOCTL select HAVE_KVM_EVENTFD diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index c1f9b3cf437c..18f2c954464e 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -44,7 +44,6 @@ config X86 # select ACPI_LEGACY_TABLES_LOOKUP if ACPI select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI - select ANON_INODES select ARCH_32BIT_OFF_T if X86_32 select ARCH_CLOCKSOURCE_DATA select ARCH_CLOCKSOURCE_INIT diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index 72fa955f4a15..fc042419e670 100644 --- a/arch/x86/kvm/Kconfig +++ b/arch/x86/kvm/Kconfig @@ -27,7 +27,6 @@ config KVM depends on X86_LOCAL_APIC select PREEMPT_NOTIFIERS select MMU_NOTIFIER - select ANON_INODES select HAVE_KVM_IRQCHIP select HAVE_KVM_IRQFD select IRQ_BYPASS_MANAGER diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index 059700ea3521..03f067da12ee 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -174,7 +174,6 @@ source "drivers/base/regmap/Kconfig" config DMA_SHARED_BUFFER bool default n - select ANON_INODES select IRQ_WORK help This option enables the framework for buffer-sharing between diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig index 536e55d3919f..f3e4bc490cf0 100644 --- a/drivers/char/tpm/Kconfig +++ b/drivers/char/tpm/Kconfig @@ -157,7 +157,6 @@ config TCG_CRB config TCG_VTPM_PROXY tristate "VTPM Proxy Interface" depends on TCG_TPM - select ANON_INODES ---help--- This driver proxies for an emulated TPM (vTPM) running in userspace. A device /dev/vtpmx is provided that creates a device pair diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig index 2e5a0faa2cb1..3fc9c2efc583 100644 --- a/drivers/dma-buf/Kconfig +++ b/drivers/dma-buf/Kconfig @@ -3,7 +3,6 @@ menu "DMABUF options" config SYNC_FILE bool "Explicit Synchronization Framework" default n - select ANON_INODES select DMA_SHARED_BUFFER ---help--- The Sync File Framework adds explicit syncronization via diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 3f50526a771f..0f91600c27ae 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -12,7 +12,6 @@ config ARCH_HAVE_CUSTOM_GPIO_H menuconfig GPIOLIB bool "GPIO Support" - select ANON_INODES help This enables GPIO support through the generic GPIO library. You only need to enable this, if you also want to enable diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig index d08aeb41cd07..1dec0fecb6ef 100644 --- a/drivers/iio/Kconfig +++ b/drivers/iio/Kconfig @@ -4,7 +4,6 @@ menuconfig IIO tristate "Industrial I/O support" - select ANON_INODES help The industrial I/O subsystem provides a unified framework for drivers for many different types of embedded sensors using a diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig index a1fb840de45d..d318bab25860 100644 --- a/drivers/infiniband/Kconfig +++ b/drivers/infiniband/Kconfig @@ -25,7 +25,6 @@ config INFINIBAND_USER_MAD config INFINIBAND_USER_ACCESS tristate "InfiniBand userspace access (verbs and CM)" - select ANON_INODES depends on MMU ---help--- Userspace InfiniBand access support. This enables the diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig index 9de5ed38da83..3798d77d131c 100644 --- a/drivers/vfio/Kconfig +++ b/drivers/vfio/Kconfig @@ -22,7 +22,6 @@ menuconfig VFIO tristate "VFIO Non-Privileged userspace driver framework" depends on IOMMU_API select VFIO_IOMMU_TYPE1 if (X86 || S390 || ARM || ARM64) - select ANON_INODES help VFIO provides a framework for secure userspace device drivers. See Documentation/vfio.txt for more details. diff --git a/fs/Makefile b/fs/Makefile index 427fec226fae..35945f8139e6 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -25,7 +25,7 @@ obj-$(CONFIG_PROC_FS) += proc_namespace.o obj-y += notify/ obj-$(CONFIG_EPOLL) += eventpoll.o -obj-$(CONFIG_ANON_INODES) += anon_inodes.o +obj-y += anon_inodes.o obj-$(CONFIG_SIGNALFD) += signalfd.o obj-$(CONFIG_TIMERFD) += timerfd.o obj-$(CONFIG_EVENTFD) += eventfd.o diff --git a/fs/notify/fanotify/Kconfig b/fs/notify/fanotify/Kconfig index 735bfb2e9190..521dc91d2cb5 100644 --- a/fs/notify/fanotify/Kconfig +++ b/fs/notify/fanotify/Kconfig @@ -1,7 +1,6 @@ config FANOTIFY bool "Filesystem wide access notification" select FSNOTIFY - select ANON_INODES select EXPORTFS default n ---help--- diff --git a/fs/notify/inotify/Kconfig b/fs/notify/inotify/Kconfig index b981fc0c8379..0161c74e76e2 100644 --- a/fs/notify/inotify/Kconfig +++ b/fs/notify/inotify/Kconfig @@ -1,6 +1,5 @@ config INOTIFY_USER bool "Inotify support for userspace" - select ANON_INODES select FSNOTIFY default y ---help--- diff --git a/init/Kconfig b/init/Kconfig index 4592bf7997c0..be8f97e37a76 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1171,9 +1171,6 @@ config LD_DEAD_CODE_DATA_ELIMINATION config SYSCTL bool -config ANON_INODES - bool - config HAVE_UID16 bool @@ -1378,14 +1375,12 @@ config HAVE_FUTEX_CMPXCHG config EPOLL bool "Enable eventpoll support" if EXPERT default y - select ANON_INODES help Disabling this option will cause the kernel to be built without support for epoll family of system calls. config SIGNALFD bool "Enable signalfd() system call" if EXPERT - select ANON_INODES default y help Enable the signalfd() system call that allows to receive signals @@ -1395,7 +1390,6 @@ config SIGNALFD config TIMERFD bool "Enable timerfd() system call" if EXPERT - select ANON_INODES default y help Enable the timerfd() system call that allows to receive timer @@ -1405,7 +1399,6 @@ config TIMERFD config EVENTFD bool "Enable eventfd() system call" if EXPERT - select ANON_INODES default y help Enable the eventfd() system call that allows to receive both @@ -1516,7 +1509,6 @@ config KALLSYMS_BASE_RELATIVE # syscall, maps, verifier config BPF_SYSCALL bool "Enable bpf() system call" - select ANON_INODES select BPF select IRQ_WORK default n @@ -1533,7 +1525,6 @@ config BPF_JIT_ALWAYS_ON config USERFAULTFD bool "Enable userfaultfd() system call" - select ANON_INODES depends on MMU help Enable the userfaultfd() system call that allows to intercept and @@ -1600,7 +1591,6 @@ config PERF_EVENTS bool "Kernel performance events and counters" default y if PROFILING depends on HAVE_PERF_EVENTS - select ANON_INODES select IRQ_WORK select SRCU help -- 2.21.0