[SPARC64] mm: update get_user_insn comment
Update comment on get_user_insn to the more general "pte lock", which may or may not be the page_table_lock. Note vmtruncate handled like kswapd. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -109,7 +109,7 @@ static void bad_kernel_pc(struct pt_regs *regs)
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* this. Additionally, to prevent kswapd from ripping ptes from
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* under us, raise interrupts around the time that we look at the
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* pte, kswapd will have to wait to get his smp ipi response from
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* us. This saves us having to get page_table_lock.
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* us. vmtruncate likewise. This saves us having to get pte lock.
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*/
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static unsigned int get_user_insn(unsigned long tpc)
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{
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