Re: [PATCH 1/2] mm/filemap: remove hugetlb special casing in filemap.c

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On 6/9/23 1:05 PM, Matthew Wilcox wrote:
On Fri, Jun 09, 2023 at 12:49:46PM -0700, Sidhartha Kumar wrote:
@@ -850,12 +847,9 @@ static inline loff_t folio_file_pos(struct folio *folio)
/*
   * Get the offset in PAGE_SIZE (even for hugetlb folios).
- * (TODO: hugetlb folios should have ->index in PAGE_SIZE)
   */
  static inline pgoff_t folio_pgoff(struct folio *folio)
  {
-	if (unlikely(folio_test_hugetlb(folio)))
-		return hugetlb_basepage_index(&folio->page);
  	return folio->index;
  }

Unfortunately, you can't split the patches like this.  If somebody's
running a git bisect for an entirely different problem and lands on the
boundary between these two patches, they'll have a non-functional kernel
(at least if they're using hugetlbfs).  So these two patches have to be
combined.  Maybe there's another way to split up the patches, but I
don't immediately see it.  Maybe after I read more of them.

While this is under review, should I keep it split so the filemap and
hugetlb parts are separate and easier to review or should I combine these two patches together for the v2 immediately?

Thanks




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