On Thu, Jan 30, 2025 at 12:00:40PM +0200, Kirill A. Shutemov wrote:
> Use folios instead of pages.
>
> This is preparation for removing PG_reclaim.
Well, this is a horrid little function. Rather than iterating just the
dirty folios, it iterates all folios, then locks them before checking
whether they're dirty.
I don't know whether the comments are correct or the code is correct.
This comment doesn't match with setting PageReclaim:
* Leave mmapings intact (GTT will have been revoked on unbinding,
* leaving only CPU mmapings around) and add those pages to the LRU
* instead of invoking writeback so they are aged and paged out
* as normal.
so I wonder if Chris was confused about what PageReclaim actually does.
Let's find out if he still remembers what he thought it did!
