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btrfs: take allocation of ->tree_root into open_ctree()

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now that we don't need it for sget() anymore...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-11-17 15:57:57 -05:00
parent 815745cf3e
commit f84a8bd60e
3 changed files with 5 additions and 10 deletions
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8
fs/btrfs/disk-io.c
View file

@ -1215,7 +1215,7 @@ static int find_and_setup_root(struct btrfs_root *tree_root,
return 0;
}
struct btrfs_root *btrfs_alloc_root(struct btrfs_fs_info *fs_info)
static struct btrfs_root *btrfs_alloc_root(struct btrfs_fs_info *fs_info)
{
struct btrfs_root *root = kzalloc(sizeof(*root), GFP_NOFS);
if (root)
@ -1895,7 +1895,7 @@ int open_ctree(struct super_block *sb,
struct buffer_head *bh;
struct btrfs_super_block *disk_super;
struct btrfs_fs_info *fs_info = btrfs_sb(sb);
struct btrfs_root *tree_root = fs_info->tree_root;
struct btrfs_root *tree_root;
struct btrfs_root *extent_root;
struct btrfs_root *csum_root;
struct btrfs_root *chunk_root;
@ -1906,12 +1906,14 @@ int open_ctree(struct super_block *sb,
int num_backups_tried = 0;
int backup_index = 0;
tree_root = fs_info->tree_root = btrfs_alloc_root(fs_info);
extent_root = fs_info->extent_root = btrfs_alloc_root(fs_info);
csum_root = fs_info->csum_root = btrfs_alloc_root(fs_info);
chunk_root = fs_info->chunk_root = btrfs_alloc_root(fs_info);
dev_root = fs_info->dev_root = btrfs_alloc_root(fs_info);
if (!extent_root || !csum_root || !chunk_root || !dev_root) {
if (!tree_root || !extent_root || !csum_root ||
!chunk_root || !dev_root) {
err = -ENOMEM;
goto fail;
}

2
fs/btrfs/disk-io.h
View file

@ -86,8 +86,6 @@ int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans,
int btrfs_add_log_tree(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
struct btrfs_root *btrfs_alloc_root(struct btrfs_fs_info *fs_info);
#ifdef CONFIG_DEBUG_LOCK_ALLOC
void btrfs_init_lockdep(void);
void btrfs_set_buffer_lockdep_class(u64 objectid,

5
fs/btrfs/super.c
View file

@ -899,11 +899,6 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
if (!fs_info)
return ERR_PTR(-ENOMEM);
fs_info->tree_root = btrfs_alloc_root(fs_info);
if (!fs_info->tree_root) {
error = -ENOMEM;
goto error_fs_info;
}
fs_info->fs_devices = fs_devices;
fs_info->super_copy = kzalloc(BTRFS_SUPER_INFO_SIZE, GFP_NOFS);