Re: [PATCH 5/5] brd: Kill usage of page->index

[Matthew Wilcox]

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>