On Thu, Jun 17, 2021 at 09:24:02AM +0100, David Howells wrote: > With transparent huge pages, in the future, write_begin() and write_end() > may be passed a length parameter that, in combination with the offset into > the page, exceeds the length of that page. This allows > grab_cache_page_write_begin() to better choose the size of THP to allocate. While this is all true, it's really not necessary at this point in time. That change will come with a conversion of these functions to work with folios and basically every line you change here will change again.
