The dev_replace_state defines are miss matched between the
BTRFS_IOCTL_DEV_REPLACE_STATE_* and BTRFS_DEV_REPLACE_ITEM_STATE_* [1].
[1]
-----------------------------
btrfs.h:#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2
btrfs.h:#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3
btrfs.h:#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4
btrfs_tree.h:#define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2
btrfs_tree.h:#define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3
btrfs_tree.h:#define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4
-----------------------------
The BTRFS_DEV_REPLACE_ITEM_STATE_* series is unused in both btrfs.ko and
btrfs-progs, the on-disk also follows BTRFS_IOCTL_DEV_REPLACE_STATE_*
(we set dev_replace->replace_state using the
BTRFS_IOCTL_DEV_REPLACE_STATE_* defines and write to the on-disk).
359 btrfs_set_dev_replace_replace_state(eb, ptr,
360 dev_replace->replace_state);
IMO it should be ok to delete the BTRFS_DEV_REPLACE_ITEM_STATE_*
altogether? But how about the userland progs other than btrfs-progs?
If not at least fix the miss match as in [2], any comments?
[2]
--------------------------------------
diff --git a/include/uapi/linux/btrfs_tree.h
b/include/uapi/linux/btrfs_tree.h
index aff1356c2bb8..9ffa7534cadf 100644
--- a/include/uapi/linux/btrfs_tree.h
+++ b/include/uapi/linux/btrfs_tree.h
@@ -805,9 +805,9 @@ struct btrfs_dev_stats_item {
#define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1
#define BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED 0
#define BTRFS_DEV_REPLACE_ITEM_STATE_STARTED 1
-#define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2
-#define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3
-#define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4
+#define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 2
+#define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 3
+#define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 4
struct btrfs_dev_replace_item {
/*
--------------------------------------
Thanks, Anand
