mm: add kernel_migrate_pages() helper, move compat syscall to mm/mempolicy.c
Move compat_sys_migrate_pages() to mm/mempolicy.c and make it call a newly introduced helper -- kernel_migrate_pages() -- instead of the syscall. This patch is part of a series which removes in-kernel calls to syscalls. On this basis, the syscall entry path can be streamlined. For details, see http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-mm@kvack.org Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
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