diff options
Diffstat (limited to 'fs/btrfs/super.c')
-rw-r--r-- | fs/btrfs/super.c | 89 |
1 files changed, 13 insertions, 76 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index bbe5cabcb42..3e8bfb0e5d7 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -45,14 +45,6 @@ static struct inode_operations btrfs_file_inode_operations; static struct address_space_operations btrfs_aops; static struct file_operations btrfs_file_operations; -static int check_inode(struct inode *inode) -{ - struct btrfs_inode *ei = BTRFS_I(inode); - WARN_ON(ei->magic != 0xDEADBEEF); - WARN_ON(ei->magic2 != 0xDEADBEAF); - return 0; -} - static void btrfs_read_locked_inode(struct inode *inode) { struct btrfs_path *path; @@ -66,15 +58,12 @@ static void btrfs_read_locked_inode(struct inode *inode) btrfs_init_path(path); mutex_lock(&root->fs_info->fs_mutex); - check_inode(inode); - memcpy(&location, &BTRFS_I(inode)->location, sizeof(location)); ret = btrfs_lookup_inode(NULL, root, path, &location, 0); if (ret) { btrfs_free_path(path); goto make_bad; } - check_inode(inode); inode_item = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]), path->slots[0], struct btrfs_inode_item); @@ -97,7 +86,7 @@ static void btrfs_read_locked_inode(struct inode *inode) inode_item = NULL; mutex_unlock(&root->fs_info->fs_mutex); - check_inode(inode); + switch (inode->i_mode & S_IFMT) { #if 0 default: @@ -121,7 +110,6 @@ static void btrfs_read_locked_inode(struct inode *inode) // inode->i_op = &page_symlink_inode_operations; break; } - check_inode(inode); return; make_bad: @@ -272,10 +260,7 @@ static int btrfs_free_inode(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct inode *inode) { - u64 objectid = inode->i_ino; struct btrfs_path *path; - struct btrfs_inode_map_item *map; - struct btrfs_key stat_data_key; int ret; clear_inode(inode); @@ -283,26 +268,11 @@ static int btrfs_free_inode(struct btrfs_trans_handle *trans, path = btrfs_alloc_path(); BUG_ON(!path); btrfs_init_path(path); - ret = btrfs_lookup_inode_map(trans, root, path, objectid, -1); - if (ret) { - if (ret > 0) - ret = -ENOENT; - goto error; - } - map = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]), path->slots[0], - struct btrfs_inode_map_item); - btrfs_disk_key_to_cpu(&stat_data_key, &map->key); - ret = btrfs_del_item(trans, root->fs_info->inode_root, path); - BUG_ON(ret); - btrfs_release_path(root, path); - ret = btrfs_lookup_inode(trans, root, path, &BTRFS_I(inode)->location, -1); BUG_ON(ret); ret = btrfs_del_item(trans, root, path); BUG_ON(ret); -error: - btrfs_release_path(root, path); btrfs_free_path(path); return ret; } @@ -432,7 +402,6 @@ static int btrfs_inode_by_name(struct inode *dir, struct dentry *dentry, out: btrfs_release_path(root, path); btrfs_free_path(path); - check_inode(dir); return ret; } @@ -540,9 +509,7 @@ printk("adding new root for inode %lu root %p (found %p)\n", inode->i_ino, sub_r btrfs_read_locked_inode(inode); unlock_new_inode(inode); } - check_inode(inode); } - check_inode(dir); return d_splice_alias(inode, dentry); } @@ -566,7 +533,6 @@ static int btrfs_readdir(struct file *filp, void *dirent, filldir_t filldir) /* FIXME, use a real flag for deciding about the key type */ if (root->fs_info->tree_root == root) key_type = BTRFS_DIR_ITEM_KEY; - mutex_lock(&root->fs_info->fs_mutex); key.objectid = inode->i_ino; key.flags = 0; @@ -575,9 +541,8 @@ static int btrfs_readdir(struct file *filp, void *dirent, filldir_t filldir) path = btrfs_alloc_path(); btrfs_init_path(path); ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); - if (ret < 0) { + if (ret < 0) goto err; - } advance = 0; while(1) { leaf = btrfs_buffer_leaf(path->nodes[0]); @@ -601,8 +566,7 @@ static int btrfs_readdir(struct file *filp, void *dirent, filldir_t filldir) if (btrfs_disk_key_objectid(&item->key) != key.objectid) break; if (key_type == BTRFS_DIR_INDEX_KEY && - btrfs_disk_key_offset(&item->key) > - root->fs_info->highest_inode) + btrfs_disk_key_offset(&item->key) > root->highest_inode) break; if (btrfs_disk_key_type(&item->key) != key_type) continue; @@ -707,7 +671,6 @@ static void fill_inode_item(struct btrfs_inode_item *item, btrfs_set_timespec_nsec(&item->ctime, inode->i_ctime.tv_nsec); btrfs_set_inode_nblocks(item, inode->i_blocks); btrfs_set_inode_generation(item, inode->i_generation); - check_inode(inode); } static int btrfs_update_inode(struct btrfs_trans_handle *trans, @@ -721,7 +684,6 @@ static int btrfs_update_inode(struct btrfs_trans_handle *trans, path = btrfs_alloc_path(); BUG_ON(!path); btrfs_init_path(path); - ret = btrfs_lookup_inode(trans, root, path, &BTRFS_I(inode)->location, 1); if (ret) { @@ -736,11 +698,11 @@ static int btrfs_update_inode(struct btrfs_trans_handle *trans, fill_inode_item(inode_item, inode); btrfs_mark_buffer_dirty(path->nodes[0]); + ret = 0; failed: btrfs_release_path(root, path); btrfs_free_path(path); - check_inode(inode); - return 0; + return ret; } static int btrfs_write_inode(struct inode *inode, int wait) @@ -757,7 +719,6 @@ static int btrfs_write_inode(struct inode *inode, int wait) else btrfs_end_transaction(trans, root); mutex_unlock(&root->fs_info->fs_mutex); - check_inode(inode); return ret; } @@ -767,7 +728,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, struct inode *inode; struct btrfs_inode_item inode_item; struct btrfs_root *root = BTRFS_I(dir)->root; - struct btrfs_key *key; + struct btrfs_key *location; int ret; u64 objectid; @@ -776,8 +737,6 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, return ERR_PTR(-ENOMEM); BTRFS_I(inode)->root = BTRFS_I(dir)->root; - key = &BTRFS_I(inode)->location; - check_inode(inode); ret = btrfs_find_free_objectid(trans, root, dir->i_ino, &objectid); BUG_ON(ret); @@ -788,20 +747,16 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, inode->i_blocks = 0; inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; fill_inode_item(&inode_item, inode); - - key->objectid = objectid; - key->flags = 0; - key->offset = 0; - btrfs_set_key_type(key, BTRFS_INODE_ITEM_KEY); - ret = btrfs_insert_inode_map(trans, root, objectid, key); - BUG_ON(ret); + location = &BTRFS_I(inode)->location; + location->objectid = objectid; + location->flags = 0; + location->offset = 0; + btrfs_set_key_type(location, BTRFS_INODE_ITEM_KEY); ret = btrfs_insert_inode(trans, root, objectid, &inode_item); BUG_ON(ret); insert_inode_hash(inode); - check_inode(inode); - check_inode(dir); return inode; } @@ -825,8 +780,6 @@ static int btrfs_add_link(struct btrfs_trans_handle *trans, ret = btrfs_update_inode(trans, root, dentry->d_parent->d_inode); } - check_inode(inode); - check_inode(dentry->d_parent->d_inode); return ret; } @@ -840,7 +793,6 @@ static int btrfs_add_nondir(struct btrfs_trans_handle *trans, } if (err > 0) err = -EEXIST; - check_inode(inode); return err; } @@ -872,8 +824,6 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry, out_unlock: btrfs_end_transaction(trans, root); mutex_unlock(&root->fs_info->fs_mutex); - check_inode(inode); - check_inode(dir); if (drop_inode) { inode_dec_link_count(inode); @@ -1701,7 +1651,8 @@ static int create_snapshot(struct btrfs_root *root, char *name, int namelen) ret = btrfs_update_inode(trans, root, root->inode); BUG_ON(ret); - ret = btrfs_find_free_objectid(trans, root, 0, &objectid); + ret = btrfs_find_free_objectid(trans, root->fs_info->tree_root, + 0, &objectid); BUG_ON(ret); memset(&new_root_item, 0, sizeof(new_root_item)); @@ -1709,13 +1660,6 @@ static int create_snapshot(struct btrfs_root *root, char *name, int namelen) sizeof(new_root_item)); key.objectid = objectid; - key.flags = 0; - key.offset = 0; - btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY); - ret = btrfs_insert_inode_map(trans, root, objectid, &key); - BUG_ON(ret); - - key.objectid = objectid; key.offset = 1; key.flags = 0; btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY); @@ -1791,21 +1735,14 @@ static struct inode *btrfs_alloc_inode(struct super_block *sb) ei = kmem_cache_alloc(btrfs_inode_cachep, GFP_NOFS); if (!ei) return NULL; - ei->magic = 0xDEADBEEF; - ei->magic2 = 0xDEADBEAF; return &ei->vfs_inode; } static void btrfs_destroy_inode(struct inode *inode) { - struct btrfs_inode *ei = BTRFS_I(inode); - WARN_ON(ei->magic != 0xDEADBEEF); - WARN_ON(ei->magic2 != 0xDEADBEAF); WARN_ON(!list_empty(&inode->i_dentry)); WARN_ON(inode->i_data.nrpages); - ei->magic = 0; - ei->magic2 = 0; kmem_cache_free(btrfs_inode_cachep, BTRFS_I(inode)); } |