Re: [PATCH 2/6] uprobes: introduce is_swbp_at_addr_fast()

From: Oleg Nesterov
Date: Mon Apr 16 2012 - 11:35:39 EST

On 04/16, Peter Zijlstra wrote:
> Can't we 'optimize' read_opcode() by doing the pagefault_disable() +
> __copy_from_user_inatomic() optimistically before going down the whole
> gup()+lock+kmap path?

Unlikely, the task is not current.


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