Correct way to release get_user_pages()?

[Roland Dreier]

Reading through the tree, I see that some callers of get_user_pages()
release the pages that they got via put_page(), and some callers use
page_cache_release().  Of course <linux/pagemap.h> has

	#define page_cache_release(page)      put_page(page)

so this is really not much of a difference, but I'd like to know which
is considered better style.  Any opinions?

Thanks,
  Roland

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