Commit d788f5b3 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Andrew Morton
Browse files

mm: add split_folio() 

This wrapper removes a need to use split_huge_page(&folio->page).  Convert
two callers.

Link: https://lkml.kernel.org/r/20220902194653.1739778-5-willy@infradead.org


Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent c3a15bff

include/linux/huge_mm.h

+5 −0
Original line number Diff line number Diff line
@@ -444,6 +444,11 @@ static inline int split_folio_to_list(struct folio *folio, 
	return split_huge_page_to_list(&folio->page, list);

}



static inline int split_folio(struct folio *folio)

{

	return split_folio_to_list(folio, NULL);

}



/*

 * archs that select ARCH_WANTS_THP_SWAP but don't support THP_SWP due to

 * limitations in the implementation like arm64 MTE can override this to

mm/shmem.c

+1 −1
Original line number Diff line number Diff line
@@ -629,7 +629,7 @@ static unsigned long shmem_unused_huge_shrink(struct shmem_sb_info *sbinfo, 
			goto move_back;

		}



		ret = split_huge_page(&folio->page);

		ret = split_folio(folio);

		folio_unlock(folio);

		folio_put(folio);

mm/truncate.c

+1 −1
Original line number Diff line number Diff line
@@ -240,7 +240,7 @@ bool truncate_inode_partial_folio(struct folio *folio, loff_t start, loff_t end) 
		folio_invalidate(folio, offset, length);

	if (!folio_test_large(folio))

		return true;

	if (split_huge_page(&folio->page) == 0)

	if (split_folio(folio) == 0)

		return true;

	if (folio_test_dirty(folio))

		return false;