On Thu, 17 Aug 2023 11:18:36 -0700 Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx> wrote: > Perf was used to check the performance differences after the patch. Overall > the performance is similar to mainline with a very small larger overhead that > occurs in __filemap_add_folio() and hugetlb_add_to_page_cache(). This is because > of the larger overhead that occurs in xa_load() and xa_store() as the > xarray is now using more entries to store hugetlb folios in the page cache. So... why merge the patch? To save 40 lines of code? I mean, if a patch which added 40 lines yielded a "very small" reduction in overhead, we'd probably merge it! Or is there some wider reason for this which the changelog omitted?
