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Date:   Thu, 16 May 2019 15:01:45 +0200
From:   Christian Brauner <christian@...uner.io>
To:     David Howells <dhowells@...hat.com>
Cc:     torvalds@...ux-foundation.org, viro@...iv.linux.org.uk,
        Arnd Bergmann <arnd@...db.de>, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] uapi: Wire up the mount API syscalls on non-x86
 arches [ver #2]

On Thu, May 16, 2019 at 12:52:34PM +0100, David Howells wrote:
> Wire up the mount API syscalls on non-x86 arches.
> 
> Reported-by: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: David Howells <dhowells@...hat.com>
> Reviewed-by: Arnd Bergmann <arnd@...db.de>

Reviewed-by: Christian Brauner <christian@...uner.io>

> ---
> 
>  arch/alpha/kernel/syscalls/syscall.tbl      |    6 ++++++
>  arch/arm/tools/syscall.tbl                  |    6 ++++++
>  arch/arm64/include/asm/unistd.h             |    2 +-
>  arch/arm64/include/asm/unistd32.h           |   12 ++++++++++++
>  arch/ia64/kernel/syscalls/syscall.tbl       |    6 ++++++
>  arch/m68k/kernel/syscalls/syscall.tbl       |    6 ++++++
>  arch/microblaze/kernel/syscalls/syscall.tbl |    6 ++++++
>  arch/mips/kernel/syscalls/syscall_n32.tbl   |    6 ++++++
>  arch/mips/kernel/syscalls/syscall_n64.tbl   |    6 ++++++
>  arch/mips/kernel/syscalls/syscall_o32.tbl   |    6 ++++++
>  arch/parisc/kernel/syscalls/syscall.tbl     |    6 ++++++
>  arch/powerpc/kernel/syscalls/syscall.tbl    |    6 ++++++
>  arch/s390/kernel/syscalls/syscall.tbl       |    6 ++++++
>  arch/sh/kernel/syscalls/syscall.tbl         |    6 ++++++
>  arch/sparc/kernel/syscalls/syscall.tbl      |    6 ++++++
>  arch/xtensa/kernel/syscalls/syscall.tbl     |    6 ++++++
>  include/uapi/asm-generic/unistd.h           |   14 +++++++++++++-
>  17 files changed, 110 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl
> index 165f268beafc..9e7704e44f6d 100644
> --- a/arch/alpha/kernel/syscalls/syscall.tbl
> +++ b/arch/alpha/kernel/syscalls/syscall.tbl
> @@ -467,3 +467,9 @@
>  535	common	io_uring_setup			sys_io_uring_setup
>  536	common	io_uring_enter			sys_io_uring_enter
>  537	common	io_uring_register		sys_io_uring_register
> +538	common	open_tree			sys_open_tree
> +539	common	move_mount			sys_move_mount
> +540	common	fsopen				sys_fsopen
> +541	common	fsconfig			sys_fsconfig
> +542	common	fsmount				sys_fsmount
> +543	common	fspick				sys_fspick
> diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl
> index 0393917eaa57..aaf479a9e92d 100644
> --- a/arch/arm/tools/syscall.tbl
> +++ b/arch/arm/tools/syscall.tbl
> @@ -441,3 +441,9 @@
>  425	common	io_uring_setup			sys_io_uring_setup
>  426	common	io_uring_enter			sys_io_uring_enter
>  427	common	io_uring_register		sys_io_uring_register
> +428	common	open_tree			sys_open_tree
> +429	common	move_mount			sys_move_mount
> +430	common	fsopen				sys_fsopen
> +431	common	fsconfig			sys_fsconfig
> +432	common	fsmount				sys_fsmount
> +433	common	fspick				sys_fspick
> diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
> index f2a83ff6b73c..70e6882853c0 100644
> --- a/arch/arm64/include/asm/unistd.h
> +++ b/arch/arm64/include/asm/unistd.h
> @@ -44,7 +44,7 @@
>  #define __ARM_NR_compat_set_tls		(__ARM_NR_COMPAT_BASE + 5)
>  #define __ARM_NR_COMPAT_END		(__ARM_NR_COMPAT_BASE + 0x800)
>  
> -#define __NR_compat_syscalls		428
> +#define __NR_compat_syscalls		434
>  #endif
>  
>  #define __ARCH_WANT_SYS_CLONE
> diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
> index 23f1a44acada..c39e90600bb3 100644
> --- a/arch/arm64/include/asm/unistd32.h
> +++ b/arch/arm64/include/asm/unistd32.h
> @@ -874,6 +874,18 @@ __SYSCALL(__NR_io_uring_setup, sys_io_uring_setup)
>  __SYSCALL(__NR_io_uring_enter, sys_io_uring_enter)
>  #define __NR_io_uring_register 427
>  __SYSCALL(__NR_io_uring_register, sys_io_uring_register)
> +#define __NR_open_tree 428
> +__SYSCALL(__NR_open_tree, sys_open_tree)
> +#define __NR_move_mount 429
> +__SYSCALL(__NR_move_mount, sys_move_mount)
> +#define __NR_fsopen 430
> +__SYSCALL(__NR_fsopen, sys_fsopen)
> +#define __NR_fsconfig 431
> +__SYSCALL(__NR_fsconfig, sys_fsconfig)
> +#define __NR_fsmount 432
> +__SYSCALL(__NR_fsmount, sys_fsmount)
> +#define __NR_fspick 433
> +__SYSCALL(__NR_fspick, sys_fspick)
>  
>  /*
>   * Please add new compat syscalls above this comment and update
> diff --git a/arch/ia64/kernel/syscalls/syscall.tbl b/arch/ia64/kernel/syscalls/syscall.tbl
> index 56e3d0b685e1..e01df3f2f80d 100644
> --- a/arch/ia64/kernel/syscalls/syscall.tbl
> +++ b/arch/ia64/kernel/syscalls/syscall.tbl
> @@ -348,3 +348,9 @@
>  425	common	io_uring_setup			sys_io_uring_setup
>  426	common	io_uring_enter			sys_io_uring_enter
>  427	common	io_uring_register		sys_io_uring_register
> +428	common	open_tree			sys_open_tree
> +429	common	move_mount			sys_move_mount
> +430	common	fsopen				sys_fsopen
> +431	common	fsconfig			sys_fsconfig
> +432	common	fsmount				sys_fsmount
> +433	common	fspick				sys_fspick
> diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl
> index df4ec3ec71d1..7e3d0734b2f3 100644
> --- a/arch/m68k/kernel/syscalls/syscall.tbl
> +++ b/arch/m68k/kernel/syscalls/syscall.tbl
> @@ -427,3 +427,9 @@
>  425	common	io_uring_setup			sys_io_uring_setup
>  426	common	io_uring_enter			sys_io_uring_enter
>  427	common	io_uring_register		sys_io_uring_register
> +428	common	open_tree			sys_open_tree
> +429	common	move_mount			sys_move_mount
> +430	common	fsopen				sys_fsopen
> +431	common	fsconfig			sys_fsconfig
> +432	common	fsmount				sys_fsmount
> +433	common	fspick				sys_fspick
> diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl
> index 4964947732af..26339e417695 100644
> --- a/arch/microblaze/kernel/syscalls/syscall.tbl
> +++ b/arch/microblaze/kernel/syscalls/syscall.tbl
> @@ -433,3 +433,9 @@
>  425	common	io_uring_setup			sys_io_uring_setup
>  426	common	io_uring_enter			sys_io_uring_enter
>  427	common	io_uring_register		sys_io_uring_register
> +428	common	open_tree			sys_open_tree
> +429	common	move_mount			sys_move_mount
> +430	common	fsopen				sys_fsopen
> +431	common	fsconfig			sys_fsconfig
> +432	common	fsmount				sys_fsmount
> +433	common	fspick				sys_fspick
> diff --git a/arch/mips/kernel/syscalls/syscall_n32.tbl b/arch/mips/kernel/syscalls/syscall_n32.tbl
> index 9392dfe33f97..0e2dd68ade57 100644
> --- a/arch/mips/kernel/syscalls/syscall_n32.tbl
> +++ b/arch/mips/kernel/syscalls/syscall_n32.tbl
> @@ -366,3 +366,9 @@
>  425	n32	io_uring_setup			sys_io_uring_setup
>  426	n32	io_uring_enter			sys_io_uring_enter
>  427	n32	io_uring_register		sys_io_uring_register
> +428	n32	open_tree			sys_open_tree
> +429	n32	move_mount			sys_move_mount
> +430	n32	fsopen				sys_fsopen
> +431	n32	fsconfig			sys_fsconfig
> +432	n32	fsmount				sys_fsmount
> +433	n32	fspick				sys_fspick
> diff --git a/arch/mips/kernel/syscalls/syscall_n64.tbl b/arch/mips/kernel/syscalls/syscall_n64.tbl
> index cd0c8aa21fba..5eebfa0d155c 100644
> --- a/arch/mips/kernel/syscalls/syscall_n64.tbl
> +++ b/arch/mips/kernel/syscalls/syscall_n64.tbl
> @@ -342,3 +342,9 @@
>  425	n64	io_uring_setup			sys_io_uring_setup
>  426	n64	io_uring_enter			sys_io_uring_enter
>  427	n64	io_uring_register		sys_io_uring_register
> +428	n64	open_tree			sys_open_tree
> +429	n64	move_mount			sys_move_mount
> +430	n64	fsopen				sys_fsopen
> +431	n64	fsconfig			sys_fsconfig
> +432	n64	fsmount				sys_fsmount
> +433	n64	fspick				sys_fspick
> diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl
> index e849e8ffe4a2..3cc1374e02d0 100644
> --- a/arch/mips/kernel/syscalls/syscall_o32.tbl
> +++ b/arch/mips/kernel/syscalls/syscall_o32.tbl
> @@ -415,3 +415,9 @@
>  425	o32	io_uring_setup			sys_io_uring_setup
>  426	o32	io_uring_enter			sys_io_uring_enter
>  427	o32	io_uring_register		sys_io_uring_register
> +428	o32	open_tree			sys_open_tree
> +429	o32	move_mount			sys_move_mount
> +430	o32	fsopen				sys_fsopen
> +431	o32	fsconfig			sys_fsconfig
> +432	o32	fsmount				sys_fsmount
> +433	o32	fspick				sys_fspick
> diff --git a/arch/parisc/kernel/syscalls/syscall.tbl b/arch/parisc/kernel/syscalls/syscall.tbl
> index fe8ca623add8..c9e377d59232 100644
> --- a/arch/parisc/kernel/syscalls/syscall.tbl
> +++ b/arch/parisc/kernel/syscalls/syscall.tbl
> @@ -424,3 +424,9 @@
>  425	common	io_uring_setup			sys_io_uring_setup
>  426	common	io_uring_enter			sys_io_uring_enter
>  427	common	io_uring_register		sys_io_uring_register
> +428	common	open_tree			sys_open_tree
> +429	common	move_mount			sys_move_mount
> +430	common	fsopen				sys_fsopen
> +431	common	fsconfig			sys_fsconfig
> +432	common	fsmount				sys_fsmount
> +433	common	fspick				sys_fspick
> diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl
> index 00f5a63c8d9a..103655d84b4b 100644
> --- a/arch/powerpc/kernel/syscalls/syscall.tbl
> +++ b/arch/powerpc/kernel/syscalls/syscall.tbl
> @@ -509,3 +509,9 @@
>  425	common	io_uring_setup			sys_io_uring_setup
>  426	common	io_uring_enter			sys_io_uring_enter
>  427	common	io_uring_register		sys_io_uring_register
> +428	common	open_tree			sys_open_tree
> +429	common	move_mount			sys_move_mount
> +430	common	fsopen				sys_fsopen
> +431	common	fsconfig			sys_fsconfig
> +432	common	fsmount				sys_fsmount
> +433	common	fspick				sys_fspick
> diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
> index 061418f787c3..e822b2964a83 100644
> --- a/arch/s390/kernel/syscalls/syscall.tbl
> +++ b/arch/s390/kernel/syscalls/syscall.tbl
> @@ -430,3 +430,9 @@
>  425  common	io_uring_setup		sys_io_uring_setup              sys_io_uring_setup
>  426  common	io_uring_enter		sys_io_uring_enter              sys_io_uring_enter
>  427  common	io_uring_register	sys_io_uring_register           sys_io_uring_register
> +428  common	open_tree		sys_open_tree			sys_open_tree
> +429  common	move_mount		sys_move_mount			sys_move_mount
> +430  common	fsopen			sys_fsopen			sys_fsopen
> +431  common	fsconfig		sys_fsconfig			sys_fsconfig
> +432  common	fsmount			sys_fsmount			sys_fsmount
> +433  common	fspick			sys_fspick			sys_fspick
> diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl
> index 480b057556ee..016a727d4357 100644
> --- a/arch/sh/kernel/syscalls/syscall.tbl
> +++ b/arch/sh/kernel/syscalls/syscall.tbl
> @@ -430,3 +430,9 @@
>  425	common	io_uring_setup			sys_io_uring_setup
>  426	common	io_uring_enter			sys_io_uring_enter
>  427	common	io_uring_register		sys_io_uring_register
> +428	common	open_tree			sys_open_tree
> +429	common	move_mount			sys_move_mount
> +430	common	fsopen				sys_fsopen
> +431	common	fsconfig			sys_fsconfig
> +432	common	fsmount				sys_fsmount
> +433	common	fspick				sys_fspick
> diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl
> index a1dd24307b00..e047480b1605 100644
> --- a/arch/sparc/kernel/syscalls/syscall.tbl
> +++ b/arch/sparc/kernel/syscalls/syscall.tbl
> @@ -473,3 +473,9 @@
>  425	common	io_uring_setup			sys_io_uring_setup
>  426	common	io_uring_enter			sys_io_uring_enter
>  427	common	io_uring_register		sys_io_uring_register
> +428	common	open_tree			sys_open_tree
> +429	common	move_mount			sys_move_mount
> +430	common	fsopen				sys_fsopen
> +431	common	fsconfig			sys_fsconfig
> +432	common	fsmount				sys_fsmount
> +433	common	fspick				sys_fspick
> diff --git a/arch/xtensa/kernel/syscalls/syscall.tbl b/arch/xtensa/kernel/syscalls/syscall.tbl
> index 30084eaf8422..5fa0ee1c8e00 100644
> --- a/arch/xtensa/kernel/syscalls/syscall.tbl
> +++ b/arch/xtensa/kernel/syscalls/syscall.tbl
> @@ -398,3 +398,9 @@
>  425	common	io_uring_setup			sys_io_uring_setup
>  426	common	io_uring_enter			sys_io_uring_enter
>  427	common	io_uring_register		sys_io_uring_register
> +428	common	open_tree			sys_open_tree
> +429	common	move_mount			sys_move_mount
> +430	common	fsopen				sys_fsopen
> +431	common	fsconfig			sys_fsconfig
> +432	common	fsmount				sys_fsmount
> +433	common	fspick				sys_fspick
> diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
> index dee7292e1df6..a87904daf103 100644
> --- a/include/uapi/asm-generic/unistd.h
> +++ b/include/uapi/asm-generic/unistd.h
> @@ -832,9 +832,21 @@ __SYSCALL(__NR_io_uring_setup, sys_io_uring_setup)
>  __SYSCALL(__NR_io_uring_enter, sys_io_uring_enter)
>  #define __NR_io_uring_register 427
>  __SYSCALL(__NR_io_uring_register, sys_io_uring_register)
> +#define __NR_open_tree 428
> +__SYSCALL(__NR_open_tree, sys_open_tree)
> +#define __NR_move_mount 429
> +__SYSCALL(__NR_move_mount, sys_move_mount)
> +#define __NR_fsopen 430
> +__SYSCALL(__NR_fsopen, sys_fsopen)
> +#define __NR_fsconfig 431
> +__SYSCALL(__NR_fsconfig, sys_fsconfig)
> +#define __NR_fsmount 432
> +__SYSCALL(__NR_fsmount, sys_fsmount)
> +#define __NR_fspick 433
> +__SYSCALL(__NR_fspick, sys_fspick)
>  
>  #undef __NR_syscalls
> -#define __NR_syscalls 428
> +#define __NR_syscalls 434
>  
>  /*
>   * 32 bit systems traditionally used different
> 

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