commit 376a76aa925722ecb0ab2e2b0fa765bf0cf06844
author Oleg Nesterov <oleg@redhat.com> Mon Feb 01 18:46:41 2021 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> Wed Mar 24 10:59:25 2021 +0100
tree 4b2a228c68d2e9b402662fedb0a95bacacb6c8d8
parent 3d9fcc2502dd931aaf13920b61e1f3948030ffed

kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data()

commit 5abbe51a526253b9f003e9a0a195638dc882d660 upstream.

Preparation for fixing get_nr_restart_syscall() on X86 for COMPAT.

Add a new helper which sets restart_block->fn and calls a dummy
arch_set_restart_data() helper.

Fixes: 609c19a385c8 ("x86/ptrace: Stop setting TS_COMPAT in ptrace code")
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210201174641.GA17871@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>