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: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 38265f9..a1341fd 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -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
diff --git a/mm/shmem.c b/mm/shmem.c
index 42e5888..674bde8 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -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);
diff --git a/mm/truncate.c b/mm/truncate.c
index 0b0708b..c0be77e 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -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;
