Btrfs: use bitfield instead of integer data type for the some variants in btrfs_root

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index ebac486f59af..242a37cd26b2 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -638,7 +638,7 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir,
         struct btrfs_trans_handle *trans;
         int ret;
 
-        if (!root->ref_cows)
+        if (!test_bit(BTRFS_ROOT_REF_COWS, &root->state))
                 return -EINVAL;
 
         atomic_inc(&root->will_be_snapshoted);
@@ -2369,7 +2369,7 @@ static noinline int btrfs_ioctl_snap_destroy(struct file *file,
         dest->root_item.drop_level = 0;
         btrfs_set_root_refs(&dest->root_item, 0);
 
-        if (!xchg(&dest->orphan_item_inserted, 1)) {
+        if (!test_and_set_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, &dest->state)) {
                 ret = btrfs_insert_orphan_item(trans,
                                         root->fs_info->tree_root,
                                         dest->root_key.objectid);