When do_read_cache_folio() returns an error pointer the code
was dereferencing it rather than forwarding the error via
ERR_CAST().
Found during code review.
Fixes: 539a3322f208 ("filemap: Add read_cache_folio and read_mapping_folio")
Signed-off-by: Alexander Larsson <alexl@xxxxxxxxxx>
---
mm/filemap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/filemap.c b/mm/filemap.c
index 15800334147b..6bc55506f7a8 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3560,7 +3560,7 @@ static struct page *do_read_cache_page(struct address_space *mapping,
folio = do_read_cache_folio(mapping, index, filler, file, gfp);
if (IS_ERR(folio))
- return &folio->page;
+ return ERR_CAST(folio);
return folio_file_page(folio, index);
}
--
2.37.3
