[RFC 09/23] filemap: use mapping_min_order while allocating folios

[Pankaj Raghav <kernel@xxxxxxxxxxxxxxxx>]

From: Pankaj Raghav <p.raghav@xxxxxxxxxxx>

Allocate al teast mapping_min_order when creating new folio for the
filemap in filemap_create_folio() and do_read_cache_folio().

Signed-off-by: Pankaj Raghav <p.raghav@xxxxxxxxxxx>
---
 mm/filemap.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index 21e1341526ab..e4d46f79e95d 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2502,7 +2502,8 @@ static int filemap_create_folio(struct file *file,
 	struct folio *folio;
 	int error;
 
-	folio = filemap_alloc_folio(mapping_gfp_mask(mapping), 0);
+	folio = filemap_alloc_folio(mapping_gfp_mask(mapping),
+				    mapping_min_folio_order(mapping));
 	if (!folio)
 		return -ENOMEM;
 
@@ -3696,7 +3697,8 @@ static struct folio *do_read_cache_folio(struct address_space *mapping,
 repeat:
 	folio = filemap_get_folio(mapping, index);
 	if (IS_ERR(folio)) {
-		folio = filemap_alloc_folio(gfp, 0);
+		folio = filemap_alloc_folio(gfp,
+					    mapping_min_folio_order(mapping));
 		if (!folio)
 			return ERR_PTR(-ENOMEM);
 		err = filemap_add_folio(mapping, folio, index, gfp);
-- 
2.40.1