Commit 8fed323b authored by Kent Overstreet's avatar Kent Overstreet
Browse files

bcachefs: snapshot_format.h 



Signed-off-by: default avatarKent Overstreet <kent.overstreet@linux.dev>
parent d455179f

fs/bcachefs/bcachefs_format.h

+1 −33
Original line number Diff line number Diff line
@@ -805,39 +805,6 @@ LE32_BITMASK(BCH_SUBVOLUME_RO, struct bch_subvolume, flags, 0, 1) 
LE32_BITMASK(BCH_SUBVOLUME_SNAP,	struct bch_subvolume, flags,  1,  2)

LE32_BITMASK(BCH_SUBVOLUME_UNLINKED,	struct bch_subvolume, flags,  2,  3)



/* Snapshots */



struct bch_snapshot {

	struct bch_val		v;

	__le32			flags;

	__le32			parent;

	__le32			children[2];

	__le32			subvol;

	/* corresponds to a bch_snapshot_tree in BTREE_ID_snapshot_trees */

	__le32			tree;

	__le32			depth;

	__le32			skip[3];

	bch_le128		btime;

};



LE32_BITMASK(BCH_SNAPSHOT_DELETED,	struct bch_snapshot, flags,  0,  1)



/* True if a subvolume points to this snapshot node: */

LE32_BITMASK(BCH_SNAPSHOT_SUBVOL,	struct bch_snapshot, flags,  1,  2)



/*

 * Snapshot trees:

 *

 * The snapshot_trees btree gives us persistent indentifier for each tree of

 * bch_snapshot nodes, and allow us to record and easily find the root/master

 * subvolume that other snapshots were created from:

 */

struct bch_snapshot_tree {

	struct bch_val		v;

	__le32			master_subvol;

	__le32			root_snapshot;

};



/* LRU btree: */



struct bch_lru {
@@ -904,6 +871,7 @@ struct bch_sb_field { 
#include "dirent_format.h"

#include "xattr_format.h"

#include "quota_format.h"

#include "snapshot_format.h"

#include "sb-counters_format.h"



enum bch_sb_field_type {

fs/bcachefs/snapshot_format.h

0 → 100644
+36 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _BCACHEFS_SNAPSHOT_FORMAT_H

#define _BCACHEFS_SNAPSHOT_FORMAT_H



struct bch_snapshot {

	struct bch_val		v;

	__le32			flags;

	__le32			parent;

	__le32			children[2];

	__le32			subvol;

	/* corresponds to a bch_snapshot_tree in BTREE_ID_snapshot_trees */

	__le32			tree;

	__le32			depth;

	__le32			skip[3];

	bch_le128		btime;

};



LE32_BITMASK(BCH_SNAPSHOT_DELETED,	struct bch_snapshot, flags,  0,  1)



/* True if a subvolume points to this snapshot node: */

LE32_BITMASK(BCH_SNAPSHOT_SUBVOL,	struct bch_snapshot, flags,  1,  2)



/*

 * Snapshot trees:

 *

 * The snapshot_trees btree gives us persistent indentifier for each tree of

 * bch_snapshot nodes, and allow us to record and easily find the root/master

 * subvolume that other snapshots were created from:

 */

struct bch_snapshot_tree {

	struct bch_val		v;

	__le32			master_subvol;

	__le32			root_snapshot;

};



#endif /* _BCACHEFS_SNAPSHOT_FORMAT_H */