btrfs: convert EXTENT_* bits to enums

#ifndef BTRFS_EXTENT_IO_TREE_H

#define BTRFS_EXTENT_IO_TREE_H

#include "misc.h"

struct extent_changeset;

struct io_failure_record;

/* Bits for the extent state */

#define EXTENT_DIRTY		(1U << 0)

#define EXTENT_UPTODATE		(1U << 1)

#define EXTENT_LOCKED		(1U << 2)

#define EXTENT_NEW		(1U << 3)

#define EXTENT_DELALLOC		(1U << 4)

#define EXTENT_DEFRAG		(1U << 5)

#define EXTENT_BOUNDARY		(1U << 6)

#define EXTENT_NODATASUM	(1U << 7)

#define EXTENT_CLEAR_META_RESV	(1U << 8)

#define EXTENT_NEED_WAIT	(1U << 9)

#define EXTENT_NORESERVE	(1U << 11)

#define EXTENT_QGROUP_RESERVED	(1U << 12)

#define EXTENT_CLEAR_DATA_RESV	(1U << 13)

enum {

	ENUM_BIT(EXTENT_DIRTY),

	ENUM_BIT(EXTENT_UPTODATE),

	ENUM_BIT(EXTENT_LOCKED),

	ENUM_BIT(EXTENT_NEW),

	ENUM_BIT(EXTENT_DELALLOC),

	ENUM_BIT(EXTENT_DEFRAG),

	ENUM_BIT(EXTENT_BOUNDARY),

	ENUM_BIT(EXTENT_NODATASUM),

	ENUM_BIT(EXTENT_CLEAR_META_RESV),

	ENUM_BIT(EXTENT_NEED_WAIT),

	ENUM_BIT(EXTENT_NORESERVE),

	ENUM_BIT(EXTENT_QGROUP_RESERVED),

	ENUM_BIT(EXTENT_CLEAR_DATA_RESV),

	/*

 * Must be cleared only during ordered extent completion or on error paths if we

 * did not manage to submit bios and create the ordered extents for the range.

 * Should not be cleared during page release and page invalidation (if there is

 * an ordered extent in flight), that is left for the ordered extent completion.

	 * Must be cleared only during ordered extent completion or on error

	 * paths if we did not manage to submit bios and create the ordered

	 * extents for the range.  Should not be cleared during page release

	 * and page invalidation (if there is an ordered extent in flight),

	 * that is left for the ordered extent completion.

	 */

#define EXTENT_DELALLOC_NEW	(1U << 14)

	ENUM_BIT(EXTENT_DELALLOC_NEW),

	/*

 * When an ordered extent successfully completes for a region marked as a new

 * delalloc range, use this flag when clearing a new delalloc range to indicate

 * that the VFS' inode number of bytes should be incremented and the inode's new

 * delalloc bytes decremented, in an atomic way to prevent races with stat(2).

	 * When an ordered extent successfully completes for a region marked as

	 * a new delalloc range, use this flag when clearing a new delalloc

	 * range to indicate that the VFS' inode number of bytes should be

	 * incremented and the inode's new delalloc bytes decremented, in an

	 * atomic way to prevent races with stat(2).

	 */

#define EXTENT_ADD_INODE_BYTES  (1U << 15)

	ENUM_BIT(EXTENT_ADD_INODE_BYTES),

	/*

 * Set during truncate when we're clearing an entire range and we just want the

 * extent states to go away.

	 * Set during truncate when we're clearing an entire range and we just

	 * want the extent states to go away.

	 */

#define EXTENT_CLEAR_ALL_BITS	(1U << 16)

	ENUM_BIT(EXTENT_CLEAR_ALL_BITS),

};

#define EXTENT_DO_ACCOUNTING    (EXTENT_CLEAR_META_RESV | \

				 EXTENT_CLEAR_DATA_RESV)