Merge tag 'folio-5.16b' of git://git.infradead.org/users/willy/pagecache

Pull folio fixes from Matthew Wilcox:
 "In the course of preparing the folio changes for iomap for next merge
  window, we discovered some problems that would be nice to address now:

   - Renaming multi-page folios to large folios.

     mapping_multi_page_folio_support() is just a little too long, so we
     settled on mapping_large_folio_support(). That meant renaming, eg
     folio_test_multi() to folio_test_large().

     Rename AS_THP_SUPPORT to match

   - I hadn't included folio wrappers for zero_user_segments(), etc.
     Also, multi-page^W^W large folio support is now independent of
     CONFIG_TRANSPARENT_HUGEPAGE, so machines with HIGHMEM always need
     to fall back to the out-of-line zero_user_segments().

     Remove FS_THP_SUPPORT to match

   - The build bots finally got round to telling me that I missed a
     couple of architectures when adding flush_dcache_folio(). Christoph
     suggested that we just add linux/cacheflush.h and not rely on
     asm-generic/cacheflush.h"

* tag 'folio-5.16b' of git://git.infradead.org/users/willy/pagecache:
  mm: Add functions to zero portions of a folio
  fs: Rename AS_THP_SUPPORT and mapping_thp_support
  fs: Remove FS_THP_SUPPORT
  mm: Remove folio_test_single
  mm: Rename folio_test_multi to folio_test_large
  Add linux/cacheflush.h

1 files changed, 0 insertions, 2 deletions

diff --git a/mm/highmem.c b/mm/highmem.c
index ca9fa8c92593..762679050c9a 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -359,7 +359,6 @@ void kunmap_high(struct page *page)
 }
 EXPORT_SYMBOL(kunmap_high);
 
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
 void zero_user_segments(struct page *page, unsigned start1, unsigned end1,
 		unsigned start2, unsigned end2)
 {
@@ -416,7 +415,6 @@ void zero_user_segments(struct page *page, unsigned start1, unsigned end1,
 	BUG_ON((start1 | start2 | end1 | end2) != 0);
 }
 EXPORT_SYMBOL(zero_user_segments);
-#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 #endif /* CONFIG_HIGHMEM */
 
 #ifdef CONFIG_KMAP_LOCAL