On Mon, Jun 19, 2017 at 11:58:41PM +0200, Arnd Bergmann wrote:

On Mon, Jun 19, 2017 at 11:42 PM, James Hogan [off-list ref] wrote:

quoted

On Mon, Jun 19, 2017 at 06:49:46PM +0300, Yury Norov wrote:
Subject: [PATCH] Deprecate stat syscalls superseded by statx

Various stat system calls can now be implemented as userland wrappers
around the new statx system call, so allow them to be removed from the
kernel by default for new architectures / ABIs.

This involves adding __ARCH_WANT_SYSCALL_UNXSTAT to each existing
architecture, which enables the relevant stat system calls in the
generic system call list (if used). It also conditionally defines the
syscalls in fs/stat.c and struct stat / struct stat64 in
asm-generic/stat.h.

Signed-off-by: James Hogan <redacted>
Cc: David Howells <dhowells@redhat.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-api@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

Good idea:

Acked-by:  Arnd Bergmann <arnd@arndb.de>

Thanks,

quoted

+/* statx deprecates the un-extended stat syscalls which use struct stat[64] */
+#ifdef __ARCH_WANT_SYSCALL_UNXSTAT

I'm glad you explain what 'UNXSTAT' means here, since I would not
have otherwise guessed it, but I also can't think of anything more
intuitive.

Yeh, I renamed that several times while playing around with this :-).

The stat syscalls remind me a bit of the Vicar of Dibley episode where
the new road named "New Road" necessitates the renaming of the existing
"New Road" to "Quite Old Road" and "Quite Old Road" to "Really Quite Old
Road" and "Old Road" to "Very Old Road"!

Cheers
James