From: Gu JinXiang <gujx@cn.fujitsu.com>
Date: Wed, 11 Oct 2017 16:44:27 +0800
Subject: btrfs: Use bd_dev to generate index when dev_state_hashtable add
 items.
Git-commit: 859a58a2074858dc03943c1fa1a2975576f9b0b8
Patch-mainline: v4.15-rc1
References: bsc#1181931

Fix missing change from commit f8f84b2dfda5
("btrfs: index check-integrity state hash by a dev_t").

Function btrfsic_dev_state_hashtable_lookup uses dev_t to generate hashval
when look in up a btrfsic_dev_state in hash table. So when we add a
btrfsic_dev_state into the hash table, it should also use dev_t.

Reproducer of this bug:
Use MOUNT_OPTIONS="-o check_int" when running xfstest, device can not be
mounted successfully. So xfstest can not run.

Signed-off-by: Gu JinXiang <gujx@cn.fujitsu.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Acked-by: Nikolay Borisov <nborisov@suse.com>
---
 fs/btrfs/check-integrity.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index 9db1e7602dfc..1fee5fe93484 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -613,7 +613,7 @@ static void btrfsic_dev_state_hashtable_add(
 		struct btrfsic_dev_state_hashtable *h)
 {
 	const unsigned int hashval =
-	    (((unsigned int)((uintptr_t)ds->bdev)) &
+	    (((unsigned int)((uintptr_t)ds->bdev->bd_dev)) &
 	     (BTRFSIC_DEV2STATE_HASHTABLE_SIZE - 1));
 
 	list_add(&ds->collision_resolving_node, h->table + hashval);