Re: [PATCH v9 00/15] Use generic_file_read_iter() in hugetlbfs

Hi, Matthew,

On 8/5/2026 2:05 PM, Matthew Wilcox (Oracle) wrote:
> This set of patches are separated out from Jane's earlier series.
> https://lore.kernel.org/linux-mm/[email protected]/
> 
> We need three things to use filemap_read_iter() instead of a hugetlbfs
> specific read_iter: hwpoison handling, treating gaps in the pagecache as
> holes, and having hugetlb set the folio size in the mapping.  hwopison
> handling turned out to need a lot of prep work; the other two things
> are fairly straightforward.
> 
> Sashiko complains that the implementation of AS_AUTHORITATIVE is
> incomplete, but hugetlbfs doesn't use any of that functionality.
> We'll add it when we need it, either when hugetlbfs uses it, or when we
> convert shmem to use filemap.

I've run some tests (read over hole, hwpoison etc) for the series,
the results look good.

-thanks,
-jane