ARM: 9165/1: mm: Provide is_write_fault()
The function will check whether the fault is caused by a write access, it will be called in die_kernel_fault() too in next patch, so put it before the function of die_kernel_fault(). Acked-by: Marco Elver <elver@google.com> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
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