On 2018/11/28 上午3:53, David Sterba wrote:
> We can use simple enum for values that are not part of on-disk format:
> internal filesystem states.
>
> Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Reviewed-by: Qu Wenruo <wqu@xxxxxxxx>
Thanks,
Qu
> ---
> fs/btrfs/ctree.h | 63 ++++++++++++++++++++++++------------------------
> 1 file changed, 31 insertions(+), 32 deletions(-)
>
> diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
> index 40c405d74a01..7176b95b40e7 100644
> --- a/fs/btrfs/ctree.h
> +++ b/fs/btrfs/ctree.h
> @@ -757,38 +757,37 @@ struct btrfs_swapfile_pin {
>
> bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr);
>
> -#define BTRFS_FS_BARRIER 1
> -#define BTRFS_FS_CLOSING_START 2
> -#define BTRFS_FS_CLOSING_DONE 3
> -#define BTRFS_FS_LOG_RECOVERING 4
> -#define BTRFS_FS_OPEN 5
> -#define BTRFS_FS_QUOTA_ENABLED 6
> -#define BTRFS_FS_UPDATE_UUID_TREE_GEN 9
> -#define BTRFS_FS_CREATING_FREE_SPACE_TREE 10
> -#define BTRFS_FS_BTREE_ERR 11
> -#define BTRFS_FS_LOG1_ERR 12
> -#define BTRFS_FS_LOG2_ERR 13
> -#define BTRFS_FS_QUOTA_OVERRIDE 14
> -/* Used to record internally whether fs has been frozen */
> -#define BTRFS_FS_FROZEN 15
> -
> -/*
> - * Indicate that a whole-filesystem exclusive operation is running
> - * (device replace, resize, device add/delete, balance)
> - */
> -#define BTRFS_FS_EXCL_OP 16
> -
> -/*
> - * To info transaction_kthread we need an immediate commit so it doesn't
> - * need to wait for commit_interval
> - */
> -#define BTRFS_FS_NEED_ASYNC_COMMIT 17
> -
> -/*
> - * Indicate that balance has been set up from the ioctl and is in the main
> - * phase. The fs_info::balance_ctl is initialized.
> - */
> -#define BTRFS_FS_BALANCE_RUNNING 18
> +enum {
> + BTRFS_FS_BARRIER,
> + BTRFS_FS_CLOSING_START,
> + BTRFS_FS_CLOSING_DONE,
> + BTRFS_FS_LOG_RECOVERING,
> + BTRFS_FS_OPEN,
> + BTRFS_FS_QUOTA_ENABLED,
> + BTRFS_FS_UPDATE_UUID_TREE_GEN,
> + BTRFS_FS_CREATING_FREE_SPACE_TREE,
> + BTRFS_FS_BTREE_ERR,
> + BTRFS_FS_LOG1_ERR,
> + BTRFS_FS_LOG2_ERR,
> + BTRFS_FS_QUOTA_OVERRIDE,
> + /* Used to record internally whether fs has been frozen */
> + BTRFS_FS_FROZEN,
> + /*
> + * Indicate that a whole-filesystem exclusive operation is running
> + * (device replace, resize, device add/delete, balance)
> + */
> + BTRFS_FS_EXCL_OP,
> + /*
> + * To info transaction_kthread we need an immediate commit so it
> + * doesn't need to wait for commit_interval
> + */
> + BTRFS_FS_NEED_ASYNC_COMMIT,
> + /*
> + * Indicate that balance has been set up from the ioctl and is in the
> + * main phase. The fs_info::balance_ctl is initialized.
> + */
> + BTRFS_FS_BALANCE_RUNNING,
> +};
>
> struct btrfs_fs_info {
> u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
>
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