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btrfs: rename btrfs_root::highest_objectid to free_objectid

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This reflects the true purpose of the member as it's being used solely
in context where a new objectid is being allocated. Future changes will
also change the way it's being used to closely follow this semantics.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2020-12-07 17:32:35 +02:00 committed by David Sterba
parent 543068a217
commit 6b8fad576a
3 changed files with 9 additions and 9 deletions
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2
fs/btrfs/ctree.h
View file

@ -1104,7 +1104,7 @@ struct btrfs_root {
u32 type;
u64 highest_objectid;
u64 free_objectid;
struct btrfs_key defrag_progress;
struct btrfs_key defrag_max;

14
fs/btrfs/disk-io.c
View file

@ -1016,7 +1016,7 @@ static void __setup_root(struct btrfs_root *root, struct btrfs_fs_info *fs_info,
root->orphan_cleanup_state = 0;
root->last_trans = 0;
root->highest_objectid = 0;
root->free_objectid = 0;
root->nr_delalloc_inodes = 0;
root->nr_ordered_extents = 0;
root->inode_tree = RB_ROOT;
@ -1373,7 +1373,7 @@ static int btrfs_init_fs_root(struct btrfs_root *root, dev_t anon_dev)
goto fail;
}
ASSERT(root->highest_objectid <= BTRFS_LAST_FREE_OBJECTID);
ASSERT(root->free_objectid <= BTRFS_LAST_FREE_OBJECTID);
mutex_unlock(&root->objectid_mutex);
@ -2651,7 +2651,7 @@ static int __cold init_tree_roots(struct btrfs_fs_info *fs_info)
continue;
}
ASSERT(tree_root->highest_objectid <= BTRFS_LAST_FREE_OBJECTID);
ASSERT(tree_root->free_objectid <= BTRFS_LAST_FREE_OBJECTID);
ret = btrfs_read_roots(fs_info);
if (ret < 0) {
@ -4767,10 +4767,10 @@ int btrfs_init_root_free_objectid(struct btrfs_root *root)
slot = path->slots[0] - 1;
l = path->nodes[0];
btrfs_item_key_to_cpu(l, &found_key, slot);
root->highest_objectid = max_t(u64, found_key.objectid,
root->free_objectid = max_t(u64, found_key.objectid,
BTRFS_FIRST_FREE_OBJECTID - 1);
} else {
root->highest_objectid = BTRFS_FIRST_FREE_OBJECTID - 1;
root->free_objectid = BTRFS_FIRST_FREE_OBJECTID - 1;
}
ret = 0;
error:
@ -4783,7 +4783,7 @@ int btrfs_get_free_objectid(struct btrfs_root *root, u64 *objectid)
int ret;
mutex_lock(&root->objectid_mutex);
if (unlikely(root->highest_objectid >= BTRFS_LAST_FREE_OBJECTID)) {
if (unlikely(root->free_objectid >= BTRFS_LAST_FREE_OBJECTID)) {
btrfs_warn(root->fs_info,
"the objectid of root %llu reaches its highest value",
root->root_key.objectid);
@ -4791,7 +4791,7 @@ int btrfs_get_free_objectid(struct btrfs_root *root, u64 *objectid)
goto out;
}
*objectid = ++root->highest_objectid;
*objectid = ++root->free_objectid;
ret = 0;
out:
mutex_unlock(&root->objectid_mutex);

2
fs/btrfs/ioctl.c
View file

@ -725,7 +725,7 @@ static noinline int create_subvol(struct inode *dir,
}
mutex_lock(&new_root->objectid_mutex);
new_root->highest_objectid = new_dirid;
new_root->free_objectid = new_dirid;
mutex_unlock(&new_root->objectid_mutex);
/*