On Tue, Apr 13, 2021 at 04:11:41PM +0100, David Howells wrote:
> Suggested-by: Linus Torvalds
> Signed-off-by: David Howells
> Tested-by: Jeff Layton
> Tested-by: Dave Wysochanski
Reviewed-by: Matthew Wilcox (Oracle)
Add three functions to manipulate PG_private_2:
(*) set_page_private_2() - Set the flag and take an appropriate reference
on the flagged page.
(*) end_page_private_2() - Clear the flag, drop the reference and wake up
any waiters, somewhat analogously with end_page_writeback().
(*)
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