btrfs: cleanup device states define BTRFS_DEV_STATE_REPLACE_TGT

Currently device state is being managed by each individual int
variable such as struct btrfs_device::is_tgtdev_for_dev_replace.
Instead of that declare btrfs_device::dev_state
BTRFS_DEV_STATE_MISSING and use the bit operations.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
[ whitespace adjustments ]
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index d2c820c6f91e..7efbc4d1128b 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -172,7 +172,8 @@ no_valid_dev_replace_entry_found:
                                 dev_replace->tgtdev->commit_bytes_used =
                                         dev_replace->srcdev->commit_bytes_used;
                         }
-                        dev_replace->tgtdev->is_tgtdev_for_dev_replace = 1;
+                        set_bit(BTRFS_DEV_STATE_REPLACE_TGT,
+                                &dev_replace->tgtdev->dev_state);
                         btrfs_init_dev_replace_tgtdev_for_resume(fs_info,
                                 dev_replace->tgtdev);
                 }
@@ -566,7 +567,7 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info,
                           btrfs_dev_name(src_device),
                           src_device->devid,
                           rcu_str_deref(tgt_device->name));
-        tgt_device->is_tgtdev_for_dev_replace = 0;
+        clear_bit(BTRFS_DEV_STATE_REPLACE_TGT, &tgt_device->dev_state);
         tgt_device->devid = src_device->devid;
         src_device->devid = BTRFS_DEV_REPLACE_DEVID;
         memcpy(uuid_tmp, tgt_device->uuid, sizeof(uuid_tmp));