Commit cc37ea61 authored by David Sterba's avatar David Sterba
Browse files

btrfs: convert __TRANS_* defines to enum bits 



The base transaction bits can be defined as bits in a contiguous
sequence, although right now there's a hole from bit 1 to 8.

The bits are used for btrfs_trans_handle::type, and there's another set
of TRANS_STATE_* defines that are for btrfs_transaction::state. They are
mutually exclusive though the hole in the sequence looks like was made
for the states.

Reviewed-by: default avatarJosef Bacik <josef@toxicpanda.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent e0a8b9a7

fs/btrfs/transaction.h

+10 −8
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include "btrfs_inode.h"

#include "delayed-ref.h"

#include "ctree.h"

#include "misc.h"



enum btrfs_trans_state {

	TRANS_STATE_RUNNING,
@@ -98,14 +99,15 @@ struct btrfs_transaction { 
	struct list_head releasing_ebs;

};



#define __TRANS_FREEZABLE	(1U << 0)



#define __TRANS_START		(1U << 9)

#define __TRANS_ATTACH		(1U << 10)

#define __TRANS_JOIN		(1U << 11)

#define __TRANS_JOIN_NOLOCK	(1U << 12)

#define __TRANS_DUMMY		(1U << 13)

#define __TRANS_JOIN_NOSTART	(1U << 14)

enum {

	ENUM_BIT(__TRANS_FREEZABLE),

	ENUM_BIT(__TRANS_START),

	ENUM_BIT(__TRANS_ATTACH),

	ENUM_BIT(__TRANS_JOIN),

	ENUM_BIT(__TRANS_JOIN_NOLOCK),

	ENUM_BIT(__TRANS_DUMMY),

	ENUM_BIT(__TRANS_JOIN_NOSTART),

};



#define TRANS_START		(__TRANS_START | __TRANS_FREEZABLE)

#define TRANS_ATTACH		(__TRANS_ATTACH)