The patch 23baf831a32c ("mm, treewide: redefine MAX_ORDER sanely") changed
the meaning of MAX_ORDER from exclusive to inclusive. So, we can allocate
compound pages with up to 1 << MAX_ORDER pages.
Reflect this change in dm-crypt and start trying to allocate compound
pages with MAX_ORDER.
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
---
drivers/md/dm-crypt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/drivers/md/dm-crypt.c
===================================================================
--- linux-2.6.orig/drivers/md/dm-crypt.c 2023-11-17 17:43:13.000000000 +0100
+++ linux-2.6/drivers/md/dm-crypt.c 2023-11-17 17:43:13.000000000 +0100
@@ -1673,7 +1673,7 @@ static struct bio *crypt_alloc_buffer(st
unsigned int nr_iovecs = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
gfp_t gfp_mask = GFP_NOWAIT | __GFP_HIGHMEM;
unsigned int remaining_size;
- unsigned int order = MAX_ORDER - 1;
+ unsigned int order = MAX_ORDER;
retry:
if (unlikely(gfp_mask & __GFP_DIRECT_RECLAIM))
