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Subject: Re: [PATCH 25/38] Make anon_inodes unconditional [ver #10]
To:     David Howells <dhowells@redhat.com>, viro@zeniv.linux.org.uk
Cc:     torvalds@linux-foundation.org, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org
References: <153271267980.9458.7640156373438016898.stgit@warthog.procyon.org.uk>
 <153271285037.9458.9583418913241630415.stgit@warthog.procyon.org.uk>
From:   Randy Dunlap <rdunlap@infradead.org>
Message-ID: <9aabbf78-5502-a087-4900-43c915148635@infradead.org>
Date:   Fri, 27 Jul 2018 13:04:11 -0700
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On 07/27/2018 10:34 AM, David Howells wrote:
> Make the anon_inodes facility unconditional so that it can be used by core
> VFS code.
> 
> Signed-off-by: David Howells <dhowells@redhat.com>
> ---
> 
>  fs/Makefile  |    2 +-
>  init/Kconfig |   10 ----------
>  2 files changed, 1 insertion(+), 11 deletions(-)

Hi David,

Please also drop "select ANON_INODES" from other places that select it:

./drivers/vfio/Kconfig:25:	select ANON_INODES
./drivers/infiniband/Kconfig:28:	select ANON_INODES
./drivers/base/Kconfig:177:	select ANON_INODES
./drivers/iio/Kconfig:7:	select ANON_INODES
./drivers/dma-buf/Kconfig:6:	select ANON_INODES
./drivers/gpio/Kconfig:15:	select ANON_INODES
./drivers/char/tpm/Kconfig:160:	select ANON_INODES
./arch/arm64/kvm/Kconfig:26:	select ANON_INODES
./arch/mips/kvm/Kconfig:23:	select ANON_INODES
./arch/powerpc/kvm/Kconfig:23:	select ANON_INODES
./arch/arm/kvm/Kconfig:25:	select ANON_INODES
./arch/s390/kvm/Kconfig:24:	select ANON_INODES
./arch/x86/kvm/Kconfig:30:	select ANON_INODES
./arch/x86/Kconfig:49:	select ANON_INODES
./fs/notify/inotify/Kconfig:3:	select ANON_INODES
./fs/notify/fanotify/Kconfig:4:	select ANON_INODES


> diff --git a/fs/Makefile b/fs/Makefile
> index 9a0b8003f069..ae681523b4b1 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/init/Kconfig b/init/Kconfig
> index 5a52f07259a2..d8303f4af5d2 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -1066,9 +1066,6 @@ config LD_DEAD_CODE_DATA_ELIMINATION
>  config SYSCTL
>  	bool
>  
> -config ANON_INODES
> -	bool
> -
>  config HAVE_UID16
>  	bool
>  
> @@ -1273,14 +1270,12 @@ 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
> @@ -1290,7 +1285,6 @@ 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
> @@ -1300,7 +1294,6 @@ 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
> @@ -1414,7 +1407,6 @@ 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
> @@ -1431,7 +1423,6 @@ 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
> @@ -1498,7 +1489,6 @@ 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
> 


-- 
~Randy