Commit 7c829b72 authored by Anand Jain's avatar Anand Jain Committed by David Sterba
Browse files

btrfs: add define for oldest generation 



Some functions can filter metadata by the generation. Add a define that
will annotate such arguments.

Signed-off-by: default avatarAnand Jain <anand.jain@oracle.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
[ update changelog ]
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 051c98eb

fs/btrfs/ctree.h

+2 −0
Original line number Diff line number Diff line
@@ -66,6 +66,8 @@ struct btrfs_ordered_sum; 


#define BTRFS_MAX_LEVEL 8



#define BTRFS_OLDEST_GENERATION	0ULL



#define BTRFS_COMPAT_EXTENT_TREE_V0



/*

fs/btrfs/ioctl.c

+1 −1
Original line number Diff line number Diff line
@@ -2600,7 +2600,7 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp) 
			range->len = (u64)-1;

		}

		ret = btrfs_defrag_file(file_inode(file), file,

					range, 0, 0);

					range, BTRFS_OLDEST_GENERATION, 0);

		if (ret > 0)

			ret = 0;

		kfree(range);

fs/btrfs/tree-defrag.c

+2 −3
Original line number Diff line number Diff line
@@ -39,7 +39,6 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, 
	int level;

	int next_key_ret = 0;

	u64 last_ret = 0;

	u64 min_trans = 0;



	if (root->fs_info->extent_root == root) {

		/*
@@ -81,7 +80,7 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, 


	path->keep_locks = 1;



	ret = btrfs_search_forward(root, &key, path, min_trans);

	ret = btrfs_search_forward(root, &key, path, BTRFS_OLDEST_GENERATION);

	if (ret < 0)

		goto out;

	if (ret > 0) {
@@ -130,7 +129,7 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, 
	 */

	path->slots[1] = btrfs_header_nritems(path->nodes[1]);

	next_key_ret = btrfs_find_next_key(root, path, &key, 1,

					   min_trans);

					   BTRFS_OLDEST_GENERATION);

	if (next_key_ret == 0) {

		memcpy(&root->defrag_progress, &key, sizeof(key));

		ret = -EAGAIN;

fs/btrfs/uuid-tree.c

+1 −1
Original line number Diff line number Diff line
@@ -282,7 +282,7 @@ int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, 
	key.offset = 0;



again_search_slot:

	ret = btrfs_search_forward(root, &key, path, 0);

	ret = btrfs_search_forward(root, &key, path, BTRFS_OLDEST_GENERATION);

	if (ret) {

		if (ret > 0)

			ret = 0;

fs/btrfs/volumes.c

+2 −1
Original line number Diff line number Diff line
@@ -4208,7 +4208,8 @@ static int btrfs_uuid_scan_kthread(void *data) 
	key.offset = 0;



	while (1) {

		ret = btrfs_search_forward(root, &key, path, 0);

		ret = btrfs_search_forward(root, &key, path,

				BTRFS_OLDEST_GENERATION);

		if (ret) {

			if (ret > 0)

				ret = 0;

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