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 <[email protected]> --- 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))
