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powerpc: Fix __get_user_pages_fast() irq handling
__get_user_pages_fast() may be called with interrupts disabled (see e.g. get_futex_key() in kernel/futex.c) and therefore should use local_irq_save() and local_irq_restore() instead of local_irq_disable()/enable(). Signed-off-by: Heiko Carstens <[email protected]> CC: <[email protected]> [v3.12] Signed-off-by: Benjamin Herrenschmidt <[email protected]>
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