Commit 13648e04 authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Mike Snitzer
Browse files

dm-crypt: start allocating with MAX_ORDER 



Commit 23baf831 ("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: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@kernel.org>
parent 28f07f2a

drivers/md/dm-crypt.c

+1 −1
Original line number Diff line number Diff line
@@ -1673,7 +1673,7 @@ static struct bio *crypt_alloc_buffer(struct dm_crypt_io *io, unsigned int size) 
	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))