Fix following coccicheck error:
mm/folio-compat.c:128:17-21: ERROR: folio is NULL but dereferenced.
'folio' would be NULL when getting a reference to a folio failed.
Add a NULL check before dereferring 'folio'.
Fixes: 3f0c6a07fee6 ("mm/filemap: Add filemap_get_folio")
Signed-off-by: Wan Jiabing <wanjiabing@xxxxxxxx>
---
mm/folio-compat.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/mm/folio-compat.c b/mm/folio-compat.c
index 46fa179e32fb..54b17c1246c4 100644
--- a/mm/folio-compat.c
+++ b/mm/folio-compat.c
@@ -124,7 +124,9 @@ struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index,
struct folio *folio;
folio = __filemap_get_folio(mapping, index, fgp_flags, gfp);
- if ((fgp_flags & FGP_HEAD) || !folio || xa_is_value(folio))
+ if (!folio)
+ return NULL;
+ if ((fgp_flags & FGP_HEAD) || xa_is_value(folio))
return &folio->page;
return folio_file_page(folio, index);
}
--
2.35.3
