btrfs: separate superblock items out of fs_info

[mv-sheeva.git] / fs / btrfs / disk-io.c

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 6f58911ece0d9b6c45bca01c869f58f9a6e849e6..761717c9827876e216216bb66bdd0fc4c2fd36a9 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -256,8 +256,7 @@ void btrfs_csum_final(u32 crc, char *result)
 static int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
                           int verify)
 {
-       u16 csum_size =
-               btrfs_super_csum_size(&root->fs_info->super_copy);
+       u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
        char *result = NULL;
        unsigned long len;
        unsigned long cur_len;
@@ -1766,14 +1765,14 @@ struct btrfs_root *open_ctree(struct super_block *sb,
                goto fail_alloc;
        }
 
-       memcpy(&fs_info->super_copy, bh->b_data, sizeof(fs_info->super_copy));
-       memcpy(&fs_info->super_for_commit, &fs_info->super_copy,
-              sizeof(fs_info->super_for_commit));
+       memcpy(fs_info->super_copy, bh->b_data, sizeof(*fs_info->super_copy));
+       memcpy(fs_info->super_for_commit, fs_info->super_copy,
+              sizeof(*fs_info->super_for_commit));
        brelse(bh);
 
-       memcpy(fs_info->fsid, fs_info->super_copy.fsid, BTRFS_FSID_SIZE);
+       memcpy(fs_info->fsid, fs_info->super_copy->fsid, BTRFS_FSID_SIZE);
 
-       disk_super = &fs_info->super_copy;
+       disk_super = fs_info->super_copy;
        if (!btrfs_super_root(disk_super))
                goto fail_alloc;
 
@@ -2152,7 +2151,6 @@ fail_sb_buffer:
        btrfs_stop_workers(&fs_info->delayed_workers);
        btrfs_stop_workers(&fs_info->caching_workers);
 fail_alloc:
-       kfree(fs_info->delayed_root);
 fail_iput:
        invalidate_inode_pages2(fs_info->btree_inode->i_mapping);
        iput(fs_info->btree_inode);
@@ -2164,12 +2162,7 @@ fail_bdi:
 fail_srcu:
        cleanup_srcu_struct(&fs_info->subvol_srcu);
 fail:
-       kfree(extent_root);
-       kfree(tree_root);
-       kfree(fs_info);
-       kfree(chunk_root);
-       kfree(dev_root);
-       kfree(csum_root);
+       free_fs_info(fs_info);
        return ERR_PTR(err);
 }
 
@@ -2338,10 +2331,10 @@ int write_all_supers(struct btrfs_root *root, int max_mirrors)
        int total_errors = 0;
        u64 flags;
 
-       max_errors = btrfs_super_num_devices(&root->fs_info->super_copy) - 1;
+       max_errors = btrfs_super_num_devices(root->fs_info->super_copy) - 1;
        do_barriers = !btrfs_test_opt(root, NOBARRIER);
 
-       sb = &root->fs_info->super_for_commit;
+       sb = root->fs_info->super_for_commit;
        dev_item = &sb->dev_item;
 
        mutex_lock(&root->fs_info->fs_devices->device_list_mutex);
@@ -2603,7 +2596,6 @@ int close_ctree(struct btrfs_root *root)
        del_fs_roots(fs_info);
 
        iput(fs_info->btree_inode);
-       kfree(fs_info->delayed_root);
 
        btrfs_stop_workers(&fs_info->generic_worker);
        btrfs_stop_workers(&fs_info->fixup_workers);
@@ -2624,12 +2616,7 @@ int close_ctree(struct btrfs_root *root)
        bdi_destroy(&fs_info->bdi);
        cleanup_srcu_struct(&fs_info->subvol_srcu);
 
-       kfree(fs_info->extent_root);
-       kfree(fs_info->tree_root);
-       kfree(fs_info->chunk_root);
-       kfree(fs_info->dev_root);
-       kfree(fs_info->csum_root);
-       kfree(fs_info);
+       free_fs_info(fs_info);
 
        return 0;
 }