ARM: 8154/1: use _install_special_mapping for sigpage
_install_special_mapping allows the VMA to be identifed in /proc/pid/maps without the use of arch_vma_name, providing a slight net reduction in object size: text data bss dec hex filename 2996 96 144 3236 ca4 arch/arm/kernel/process.o (before) 2956 104 144 3204 c84 arch/arm/kernel/process.o (after) Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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