On Wed, Oct 13, 2021 at 12:00:34PM -0400, Kent Overstreet wrote: > As part of the struct page cleanups underway, we want to remove as much > usage of page->mapping and page->index as possible, as frequently they > are known from context. > > In the brd code, we're never actually reading from page->index except in > assertions, so references to it can be safely deleted. > > Signed-off-by: Kent Overstreet <kent.overstreet@xxxxxxxxx> More than that ... this is essentially asserting that the radix tree code works, and we have a test suite to ensure that. Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>