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Re: [PATCH] alpha: mlock2, copy_file_range syscalls were introduced in kernel 4.13
- From: Carlos O'Donell <carlos at redhat dot com>
- To: Florian Weimer <fweimer at redhat dot com>, GNU C Library <libc-alpha at sourceware dot org>
- Date: Tue, 24 Jul 2018 16:32:10 -0400
- Subject: Re: [PATCH] alpha: mlock2, copy_file_range syscalls were introduced in kernel 4.13
- References: <1b0477fc-eb29-d74e-64f3-2fca723f3b21@redhat.com>
On 07/24/2018 04:26 PM, Florian Weimer wrote:
> I tested this with 4.11 and 4.13 kernel headers using
> build-many-glibcs.py, both times with the respective --enable-kernel=
> option.
OK for 2.28.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
>
> Subject: [PATCH] alpha: mlock2, copy_file_range syscalls were introduced in kernel 4.13
> To: libc-alpha@sourceware.org
>
> 2018-07-24 Florian Weimer <fweimer@redhat.com>
>
> * sysdeps/unix/sysv/linux/alpha/kernel-features.h
> [__LINUX_KERNEL_VERSION < 0x040D00] (__ASSUME_MLOCK2)
> (__ASSUME_COPY_FILE_RANGE): Undefine. Kernel support was added in
> 4.13.
>
> diff --git a/sysdeps/unix/sysv/linux/alpha/kernel-features.h b/sysdeps/unix/sysv/linux/alpha/kernel-features.h
> index f63be39d1b..402d2573d7 100644
> --- a/sysdeps/unix/sysv/linux/alpha/kernel-features.h
> +++ b/sysdeps/unix/sysv/linux/alpha/kernel-features.h
> @@ -45,8 +45,10 @@
> # undef __ASSUME_EXECVEAT
> #endif
>
> -/* Support for statx was added in kernel 4.13. */
> +/* Support for copy_file_range, statx was added in kernel 4.13. */
> #if __LINUX_KERNEL_VERSION < 0x040D00
> +# undef __ASSUME_MLOCK2
> +# undef __ASSUME_COPY_FILE_RANGE
> # undef __ASSUME_STATX
> #endif
>