Messages in this thread | | | Date | Mon, 11 Jul 2016 14:17:02 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] mm: gup: Re-define follow_page_mask output parameter page_mask usage |
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On Sun, 10 Jul 2016 01:17:05 +0800 chengang@emindsoft.com.cn wrote:
> For a pure output parameter: > > - When callee fails, the caller should not assume the output parameter > is still valid. > > - And callee should not assume the pure output parameter must be > provided by caller -- caller has right to pass NULL when caller does > not care about it.
Sorry, I don't think this one is worth merging really.
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