diff options
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 378 |
1 files changed, 279 insertions, 99 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 41132339e2ea..d6420cca9c8d 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -150,7 +150,6 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans, inode_add_bytes(inode, size); ret = btrfs_insert_empty_item(trans, root, path, &key, datasize); - BUG_ON(ret); if (ret) { err = ret; goto fail; @@ -206,9 +205,9 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans, * could end up racing with unlink. */ BTRFS_I(inode)->disk_i_size = inode->i_size; - btrfs_update_inode(trans, root, inode); + ret = btrfs_update_inode(trans, root, inode); - return 0; + return ret; fail: btrfs_free_path(path); return err; @@ -250,14 +249,18 @@ static noinline int cow_file_range_inline(struct btrfs_trans_handle *trans, ret = btrfs_drop_extents(trans, inode, start, aligned_end, &hint_byte, 1); - BUG_ON(ret); + if (ret) + return ret; if (isize > actual_end) inline_len = min_t(u64, isize, actual_end); ret = insert_inline_extent(trans, root, inode, start, inline_len, compressed_size, compress_type, compressed_pages); - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + return ret; + } btrfs_delalloc_release_metadata(inode, end + 1 - start); btrfs_drop_extent_cache(inode, start, aligned_end - 1, 0); return 0; @@ -293,7 +296,7 @@ static noinline int add_async_extent(struct async_cow *cow, struct async_extent *async_extent; async_extent = kmalloc(sizeof(*async_extent), GFP_NOFS); - BUG_ON(!async_extent); + BUG_ON(!async_extent); /* -ENOMEM */ async_extent->start = start; async_extent->ram_size = ram_size; async_extent->compressed_size = compressed_size; @@ -433,7 +436,11 @@ again: cont: if (start == 0) { trans = btrfs_join_transaction(root); - BUG_ON(IS_ERR(trans)); + if (IS_ERR(trans)) { + ret = PTR_ERR(trans); + trans = NULL; + goto cleanup_and_out; + } trans->block_rsv = &root->fs_info->delalloc_block_rsv; /* lets try to make an inline extent */ @@ -450,11 +457,11 @@ cont: total_compressed, compress_type, pages); } - if (ret == 0) { + if (ret <= 0) { /* - * inline extent creation worked, we don't need - * to create any more async work items. Unlock - * and free up our temp pages. + * inline extent creation worked or returned error, + * we don't need to create any more async work items. + * Unlock and free up our temp pages. */ extent_clear_unlock_delalloc(inode, &BTRFS_I(inode)->io_tree, @@ -547,7 +554,7 @@ cleanup_and_bail_uncompressed: } out: - return 0; + return ret; free_pages_out: for (i = 0; i < nr_pages_ret; i++) { @@ -557,6 +564,20 @@ free_pages_out: kfree(pages); goto out; + +cleanup_and_out: + extent_clear_unlock_delalloc(inode, &BTRFS_I(inode)->io_tree, + start, end, NULL, + EXTENT_CLEAR_UNLOCK_PAGE | + EXTENT_CLEAR_DIRTY | + EXTENT_CLEAR_DELALLOC | + EXTENT_SET_WRITEBACK | + EXTENT_END_WRITEBACK); + if (!trans || IS_ERR(trans)) + btrfs_error(root->fs_info, ret, "Failed to join transaction"); + else + btrfs_abort_transaction(trans, root, ret); + goto free_pages_out; } /* @@ -606,6 +627,8 @@ retry: async_extent->ram_size - 1, &page_started, &nr_written, 0); + /* JDM XXX */ + /* * if page_started, cow_file_range inserted an * inline extent and took care of all the unlocking @@ -628,14 +651,19 @@ retry: async_extent->start + async_extent->ram_size - 1); trans = btrfs_join_transaction(root); - BUG_ON(IS_ERR(trans)); - trans->block_rsv = &root->fs_info->delalloc_block_rsv; - ret = btrfs_reserve_extent(trans, root, + if (IS_ERR(trans)) { + ret = PTR_ERR(trans); + } else { + trans->block_rsv = &root->fs_info->delalloc_block_rsv; + ret = btrfs_reserve_extent(trans, root, async_extent->compressed_size, async_extent->compressed_size, 0, alloc_hint, (u64)-1, &ins, 1); - btrfs_end_transaction(trans, root); + if (ret) + btrfs_abort_transaction(trans, root, ret); + btrfs_end_transaction(trans, root); + } if (ret) { int i; @@ -649,7 +677,9 @@ retry: unlock_extent(io_tree, async_extent->start, async_extent->start + async_extent->ram_size - 1); - goto retry; + if (ret == -ENOSPC) + goto retry; + goto out_free; /* JDM: Requeue? */ } /* @@ -661,7 +691,7 @@ retry: async_extent->ram_size - 1, 0); em = alloc_extent_map(); - BUG_ON(!em); + BUG_ON(!em); /* -ENOMEM */ em->start = async_extent->start; em->len = async_extent->ram_size; em->orig_start = em->start; @@ -693,7 +723,7 @@ retry: ins.offset, BTRFS_ORDERED_COMPRESSED, async_extent->compress_type); - BUG_ON(ret); + BUG_ON(ret); /* -ENOMEM */ /* * clear dirty, set writeback and unlock the pages. @@ -715,13 +745,17 @@ retry: ins.offset, async_extent->pages, async_extent->nr_pages); - BUG_ON(ret); + BUG_ON(ret); /* -ENOMEM */ alloc_hint = ins.objectid + ins.offset; kfree(async_extent); cond_resched(); } - - return 0; + ret = 0; +out: + return ret; +out_free: + kfree(async_extent); + goto out; } static u64 get_extent_allocation_hint(struct inode *inode, u64 start, @@ -790,7 +824,18 @@ static noinline int cow_file_range(struct inode *inode, BUG_ON(btrfs_is_free_space_inode(root, inode)); trans = btrfs_join_transaction(root); - BUG_ON(IS_ERR(trans)); + if (IS_ERR(trans)) { + extent_clear_unlock_delalloc(inode, + &BTRFS_I(inode)->io_tree, + start, end, NULL, + EXTENT_CLEAR_UNLOCK_PAGE | + EXTENT_CLEAR_UNLOCK | + EXTENT_CLEAR_DELALLOC | + EXTENT_CLEAR_DIRTY | + EXTENT_SET_WRITEBACK | + EXTENT_END_WRITEBACK); + return PTR_ERR(trans); + } trans->block_rsv = &root->fs_info->delalloc_block_rsv; num_bytes = (end - start + blocksize) & ~(blocksize - 1); @@ -820,8 +865,10 @@ static noinline int cow_file_range(struct inode *inode, *nr_written = *nr_written + (end - start + PAGE_CACHE_SIZE) / PAGE_CACHE_SIZE; *page_started = 1; - ret = 0; goto out; + } else if (ret < 0) { + btrfs_abort_transaction(trans, root, ret); + goto out_unlock; } } @@ -838,10 +885,13 @@ static noinline int cow_file_range(struct inode *inode, ret = btrfs_reserve_extent(trans, root, cur_alloc_size, root->sectorsize, 0, alloc_hint, (u64)-1, &ins, 1); - BUG_ON(ret); + if (ret < 0) { + btrfs_abort_transaction(trans, root, ret); + goto out_unlock; + } em = alloc_extent_map(); - BUG_ON(!em); + BUG_ON(!em); /* -ENOMEM */ em->start = start; em->orig_start = em->start; ram_size = ins.offset; @@ -867,13 +917,16 @@ static noinline int cow_file_range(struct inode *inode, cur_alloc_size = ins.offset; ret = btrfs_add_ordered_extent(inode, start, ins.objectid, ram_size, cur_alloc_size, 0); - BUG_ON(ret); + BUG_ON(ret); /* -ENOMEM */ if (root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID) { ret = btrfs_reloc_clone_csums(inode, start, cur_alloc_size); - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + goto out_unlock; + } } if (disk_num_bytes < cur_alloc_size) @@ -898,11 +951,23 @@ static noinline int cow_file_range(struct inode *inode, alloc_hint = ins.objectid + ins.offset; start += cur_alloc_size; } -out: ret = 0; +out: btrfs_end_transaction(trans, root); return ret; +out_unlock: + extent_clear_unlock_delalloc(inode, + &BTRFS_I(inode)->io_tree, + start, end, NULL, + EXTENT_CLEAR_UNLOCK_PAGE | + EXTENT_CLEAR_UNLOCK | + EXTENT_CLEAR_DELALLOC | + EXTENT_CLEAR_DIRTY | + EXTENT_SET_WRITEBACK | + EXTENT_END_WRITEBACK); + + goto out; } /* @@ -968,7 +1033,7 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page, 1, 0, NULL, GFP_NOFS); while (start < end) { async_cow = kmalloc(sizeof(*async_cow), GFP_NOFS); - BUG_ON(!async_cow); + BUG_ON(!async_cow); /* -ENOMEM */ async_cow->inode = inode; async_cow->root = root; async_cow->locked_page = locked_page; @@ -1059,7 +1124,7 @@ static noinline int run_delalloc_nocow(struct inode *inode, u64 disk_bytenr; u64 num_bytes; int extent_type; - int ret; + int ret, err; int type; int nocow; int check_prev = 1; @@ -1077,7 +1142,11 @@ static noinline int run_delalloc_nocow(struct inode *inode, else trans = btrfs_join_transaction(root); - BUG_ON(IS_ERR(trans)); + if (IS_ERR(trans)) { + btrfs_free_path(path); + return PTR_ERR(trans); + } + trans->block_rsv = &root->fs_info->delalloc_block_rsv; cow_start = (u64)-1; @@ -1085,7 +1154,10 @@ static noinline int run_delalloc_nocow(struct inode *inode, while (1) { ret = btrfs_lookup_file_extent(trans, root, path, ino, cur_offset, 0); - BUG_ON(ret < 0); + if (ret < 0) { + btrfs_abort_transaction(trans, root, ret); + goto error; + } if (ret > 0 && path->slots[0] > 0 && check_prev) { leaf = path->nodes[0]; btrfs_item_key_to_cpu(leaf, &found_key, @@ -1099,8 +1171,10 @@ next_slot: leaf = path->nodes[0]; if (path->slots[0] >= btrfs_header_nritems(leaf)) { ret = btrfs_next_leaf(root, path); - if (ret < 0) - BUG_ON(1); + if (ret < 0) { + btrfs_abort_transaction(trans, root, ret); + goto error; + } if (ret > 0) break; leaf = path->nodes[0]; @@ -1188,7 +1262,10 @@ out_check: ret = cow_file_range(inode, locked_page, cow_start, found_key.offset - 1, page_started, nr_written, 1); - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + goto error; + } cow_start = (u64)-1; } @@ -1197,7 +1274,7 @@ out_check: struct extent_map_tree *em_tree; em_tree = &BTRFS_I(inode)->extent_tree; em = alloc_extent_map(); - BUG_ON(!em); + BUG_ON(!em); /* -ENOMEM */ em->start = cur_offset; em->orig_start = em->start; em->len = num_bytes; @@ -1223,13 +1300,16 @@ out_check: ret = btrfs_add_ordered_extent(inode, cur_offset, disk_bytenr, num_bytes, num_bytes, type); - BUG_ON(ret); + BUG_ON(ret); /* -ENOMEM */ if (root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID) { ret = btrfs_reloc_clone_csums(inode, cur_offset, num_bytes); - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + goto error; + } } extent_clear_unlock_delalloc(inode, &BTRFS_I(inode)->io_tree, @@ -1248,18 +1328,23 @@ out_check: if (cow_start != (u64)-1) { ret = cow_file_range(inode, locked_page, cow_start, end, page_started, nr_written, 1); - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + goto error; + } } +error: if (nolock) { - ret = btrfs_end_transaction_nolock(trans, root); - BUG_ON(ret); + err = btrfs_end_transaction_nolock(trans, root); } else { - ret = btrfs_end_transaction(trans, root); - BUG_ON(ret); + err = btrfs_end_transaction(trans, root); } + if (!ret) + ret = err; + btrfs_free_path(path); - return 0; + return ret; } /* @@ -1448,7 +1533,7 @@ static int __btrfs_submit_bio_start(struct inode *inode, int rw, int ret = 0; ret = btrfs_csum_one_bio(root, inode, bio, 0, 0); - BUG_ON(ret); + BUG_ON(ret); /* -ENOMEM */ return 0; } @@ -1677,13 +1762,15 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans, */ ret = btrfs_drop_extents(trans, inode, file_pos, file_pos + num_bytes, &hint, 0); - BUG_ON(ret); + if (ret) + goto out; ins.objectid = btrfs_ino(inode); ins.offset = file_pos; ins.type = BTRFS_EXTENT_DATA_KEY; ret = btrfs_insert_empty_item(trans, root, path, &ins, sizeof(*fi)); - BUG_ON(ret); + if (ret) + goto out; leaf = path->nodes[0]; fi = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_file_extent_item); @@ -1711,10 +1798,10 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans, ret = btrfs_alloc_reserved_file_extent(trans, root, root->root_key.objectid, btrfs_ino(inode), file_pos, &ins); - BUG_ON(ret); +out: btrfs_free_path(path); - return 0; + return ret; } /* @@ -1742,22 +1829,24 @@ static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end) end - start + 1); if (!ret) return 0; - BUG_ON(!ordered_extent); + BUG_ON(!ordered_extent); /* Logic error */ nolock = btrfs_is_free_space_inode(root, inode); if (test_bit(BTRFS_ORDERED_NOCOW, &ordered_extent->flags)) { - BUG_ON(!list_empty(&ordered_extent->list)); + BUG_ON(!list_empty(&ordered_extent->list)); /* Logic error */ ret = btrfs_ordered_update_i_size(inode, 0, ordered_extent); if (!ret) { if (nolock) trans = btrfs_join_transaction_nolock(root); else trans = btrfs_join_transaction(root); - BUG_ON(IS_ERR(trans)); + if (IS_ERR(trans)) + return PTR_ERR(trans); trans->block_rsv = &root->fs_info->delalloc_block_rsv; ret = btrfs_update_inode_fallback(trans, root, inode); - BUG_ON(ret); + if (ret) /* -ENOMEM or corruption */ + btrfs_abort_transaction(trans, root, ret); } goto out; } @@ -1770,7 +1859,11 @@ static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end) trans = btrfs_join_transaction_nolock(root); else trans = btrfs_join_transaction(root); - BUG_ON(IS_ERR(trans)); + if (IS_ERR(trans)) { + ret = PTR_ERR(trans); + trans = NULL; + goto out_unlock; + } trans->block_rsv = &root->fs_info->delalloc_block_rsv; if (test_bit(BTRFS_ORDERED_COMPRESSED, &ordered_extent->flags)) @@ -1781,7 +1874,6 @@ static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end) ordered_extent->file_offset, ordered_extent->file_offset + ordered_extent->len); - BUG_ON(ret); } else { BUG_ON(root == root->fs_info->tree_root); ret = insert_reserved_file_extent(trans, inode, @@ -1795,11 +1887,14 @@ static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end) unpin_extent_cache(&BTRFS_I(inode)->extent_tree, ordered_extent->file_offset, ordered_extent->len); - BUG_ON(ret); } unlock_extent_cached(io_tree, ordered_extent->file_offset, ordered_extent->file_offset + ordered_extent->len - 1, &cached_state, GFP_NOFS); + if (ret < 0) { + btrfs_abort_transaction(trans, root, ret); + goto out; + } add_pending_csums(trans, inode, ordered_extent->file_offset, &ordered_extent->list); @@ -1807,7 +1902,10 @@ static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end) ret = btrfs_ordered_update_i_size(inode, 0, ordered_extent); if (!ret || !test_bit(BTRFS_ORDERED_PREALLOC, &ordered_extent->flags)) { ret = btrfs_update_inode_fallback(trans, root, inode); - BUG_ON(ret); + if (ret) { /* -ENOMEM or corruption */ + btrfs_abort_transaction(trans, root, ret); + goto out; + } } ret = 0; out: @@ -1826,6 +1924,11 @@ out: btrfs_put_ordered_extent(ordered_extent); return 0; +out_unlock: + unlock_extent_cached(io_tree, ordered_extent->file_offset, + ordered_extent->file_offset + + ordered_extent->len - 1, &cached_state, GFP_NOFS); + goto out; } static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end, @@ -1907,6 +2010,8 @@ struct delayed_iput { struct inode *inode; }; +/* JDM: If this is fs-wide, why can't we add a pointer to + * btrfs_inode instead and avoid the allocation? */ void btrfs_add_delayed_iput(struct inode *inode) { struct btrfs_fs_info *fs_info = BTRFS_I(inode)->root->fs_info; @@ -2053,20 +2158,27 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode) /* grab metadata reservation from transaction handle */ if (reserve) { ret = btrfs_orphan_reserve_metadata(trans, inode); - BUG_ON(ret); + BUG_ON(ret); /* -ENOSPC in reservation; Logic error? JDM */ } /* insert an orphan item to track this unlinked/truncated file */ if (insert >= 1) { ret = btrfs_insert_orphan_item(trans, root, btrfs_ino(inode)); - BUG_ON(ret && ret != -EEXIST); + if (ret && ret != -EEXIST) { + btrfs_abort_transaction(trans, root, ret); + return ret; + } + ret = 0; } /* insert an orphan item to track subvolume contains orphan files */ if (insert >= 2) { ret = btrfs_insert_orphan_item(trans, root->fs_info->tree_root, root->root_key.objectid); - BUG_ON(ret); + if (ret && ret != -EEXIST) { + btrfs_abort_transaction(trans, root, ret); + return ret; + } } return 0; } @@ -2096,7 +2208,7 @@ int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode) if (trans && delete_item) { ret = btrfs_del_orphan_item(trans, root, btrfs_ino(inode)); - BUG_ON(ret); + BUG_ON(ret); /* -ENOMEM or corruption (JDM: Recheck) */ } if (release_rsv) @@ -2230,7 +2342,7 @@ int btrfs_orphan_cleanup(struct btrfs_root *root) } ret = btrfs_del_orphan_item(trans, root, found_key.objectid); - BUG_ON(ret); + BUG_ON(ret); /* -ENOMEM or corruption (JDM: Recheck) */ btrfs_end_transaction(trans, root); continue; } @@ -2612,16 +2724,22 @@ static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans, printk(KERN_INFO "btrfs failed to delete reference to %.*s, " "inode %llu parent %llu\n", name_len, name, (unsigned long long)ino, (unsigned long long)dir_ino); + btrfs_abort_transaction(trans, root, ret); goto err; } ret = btrfs_delete_delayed_dir_index(trans, root, dir, index); - if (ret) + if (ret) { + btrfs_abort_transaction(trans, root, ret); goto err; + } ret = btrfs_del_inode_ref_in_log(trans, root, name, name_len, inode, dir_ino); - BUG_ON(ret != 0 && ret != -ENOENT); + if (ret != 0 && ret != -ENOENT) { + btrfs_abort_transaction(trans, root, ret); + goto err; + } ret = btrfs_del_dir_entries_in_log(trans, root, name, name_len, dir, index); @@ -2779,7 +2897,7 @@ static struct btrfs_trans_handle *__unlink_start_trans(struct inode *dir, err = ret; goto out; } - BUG_ON(ret == 0); + BUG_ON(ret == 0); /* Corruption */ if (check_path_shared(root, path)) goto out; btrfs_release_path(path); @@ -2812,7 +2930,7 @@ static struct btrfs_trans_handle *__unlink_start_trans(struct inode *dir, err = PTR_ERR(ref); goto out; } - BUG_ON(!ref); + BUG_ON(!ref); /* Logic error */ if (check_path_shared(root, path)) goto out; index = btrfs_inode_ref_index(path->nodes[0], ref); @@ -2919,23 +3037,42 @@ int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, di = btrfs_lookup_dir_item(trans, root, path, dir_ino, name, name_len, -1); - BUG_ON(IS_ERR_OR_NULL(di)); + if (IS_ERR_OR_NULL(di)) { + if (!di) + ret = -ENOENT; + else + ret = PTR_ERR(di); + goto out; + } leaf = path->nodes[0]; btrfs_dir_item_key_to_cpu(leaf, di, &key); WARN_ON(key.type != BTRFS_ROOT_ITEM_KEY || key.objectid != objectid); ret = btrfs_delete_one_dir_name(trans, root, path, di); - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + goto out; + } btrfs_release_path(path); ret = btrfs_del_root_ref(trans, root->fs_info->tree_root, objectid, root->root_key.objectid, dir_ino, &index, name, name_len); if (ret < 0) { - BUG_ON(ret != -ENOENT); + if (ret != -ENOENT) { + btrfs_abort_transaction(trans, root, ret); + goto out; + } di = btrfs_search_dir_index_item(root, path, dir_ino, name, name_len); - BUG_ON(IS_ERR_OR_NULL(di)); + if (IS_ERR_OR_NULL(di)) { + if (!di) + ret = -ENOENT; + else + ret = PTR_ERR(di); + btrfs_abort_transaction(trans, root, ret); + goto out; + } leaf = path->nodes[0]; btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); @@ -2945,15 +3082,19 @@ int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, btrfs_release_path(path); ret = btrfs_delete_delayed_dir_index(trans, root, dir, index); - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + goto out; + } btrfs_i_size_write(dir, dir->i_size - name_len * 2); dir->i_mtime = dir->i_ctime = CURRENT_TIME; ret = btrfs_update_inode(trans, root, dir); - BUG_ON(ret); - + if (ret) + btrfs_abort_transaction(trans, root, ret); +out: btrfs_free_path(path); - return 0; + return ret; } static int btrfs_rmdir(struct inode *dir, struct dentry *dentry) @@ -3212,7 +3353,11 @@ delete: ret = btrfs_del_items(trans, root, path, pending_del_slot, pending_del_nr); - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, + root, ret); + goto error; + } pending_del_nr = 0; } btrfs_release_path(path); @@ -3225,8 +3370,10 @@ out: if (pending_del_nr) { ret = btrfs_del_items(trans, root, path, pending_del_slot, pending_del_nr); - BUG_ON(ret); + if (ret) + btrfs_abort_transaction(trans, root, ret); } +error: btrfs_free_path(path); return err; } @@ -3373,7 +3520,10 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size) while (1) { em = btrfs_get_extent(inode, NULL, 0, cur_offset, block_end - cur_offset, 0); - BUG_ON(IS_ERR_OR_NULL(em)); + if (IS_ERR(em)) { + err = PTR_ERR(em); + break; + } last_byte = min(extent_map_end(em), block_end); last_byte = (last_byte + mask) & ~mask; if (!test_bit(EXTENT_FLAG_PREALLOC, &em->flags)) { @@ -3390,7 +3540,7 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size) cur_offset + hole_size, &hint_byte, 1); if (err) { - btrfs_update_inode(trans, root, inode); + btrfs_abort_transaction(trans, root, err); btrfs_end_transaction(trans, root); break; } @@ -3400,7 +3550,7 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size) 0, hole_size, 0, hole_size, 0, 0, 0); if (err) { - btrfs_update_inode(trans, root, inode); + btrfs_abort_transaction(trans, root, err); btrfs_end_transaction(trans, root); break; } @@ -4581,18 +4731,26 @@ int btrfs_add_link(struct btrfs_trans_handle *trans, parent_ino, index); } - if (ret == 0) { - ret = btrfs_insert_dir_item(trans, root, name, name_len, - parent_inode, &key, - btrfs_inode_type(inode), index); - if (ret) - goto fail_dir_item; + /* Nothing to clean up yet */ + if (ret) + return ret; - btrfs_i_size_write(parent_inode, parent_inode->i_size + - name_len * 2); - parent_inode->i_mtime = parent_inode->i_ctime = CURRENT_TIME; - ret = btrfs_update_inode(trans, root, parent_inode); + ret = btrfs_insert_dir_item(trans, root, name, name_len, + parent_inode, &key, + btrfs_inode_type(inode), index); + if (ret == -EEXIST) + goto fail_dir_item; + else if (ret) { + btrfs_abort_transaction(trans, root, ret); + return ret; } + + btrfs_i_size_write(parent_inode, parent_inode->i_size + + name_len * 2); + parent_inode->i_mtime = parent_inode->i_ctime = CURRENT_TIME; + ret = btrfs_update_inode(trans, root, parent_inode); + if (ret) + btrfs_abort_transaction(trans, root, ret); return ret; fail_dir_item: @@ -4806,7 +4964,8 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, } else { struct dentry *parent = dentry->d_parent; err = btrfs_update_inode(trans, root, inode); - BUG_ON(err); + if (err) + goto fail; d_instantiate(dentry, inode); btrfs_log_new_name(trans, inode, NULL, parent); } @@ -5137,7 +5296,7 @@ again: ret = uncompress_inline(path, inode, page, pg_offset, extent_offset, item); - BUG_ON(ret); + BUG_ON(ret); /* -ENOMEM */ } else { map = kmap(page); read_extent_buffer(leaf, map + pg_offset, ptr, @@ -5252,6 +5411,7 @@ out: free_extent_map(em); return ERR_PTR(err); } + BUG_ON(!em); /* Error is always set */ return em; } @@ -5868,7 +6028,7 @@ static int __btrfs_submit_bio_start_direct_io(struct inode *inode, int rw, int ret; struct btrfs_root *root = BTRFS_I(inode)->root; ret = btrfs_csum_one_bio(root, inode, bio, offset, 1); - BUG_ON(ret); + BUG_ON(ret); /* -ENOMEM */ return 0; } @@ -7068,7 +7228,10 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (!ret) ret = btrfs_update_inode(trans, root, old_inode); } - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + goto out_fail; + } if (new_inode) { new_inode->i_ctime = CURRENT_TIME; @@ -7086,11 +7249,14 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, new_dentry->d_name.name, new_dentry->d_name.len); } - BUG_ON(ret); - if (new_inode->i_nlink == 0) { + if (!ret && new_inode->i_nlink == 0) { ret = btrfs_orphan_add(trans, new_dentry->d_inode); BUG_ON(ret); } + if (ret) { + btrfs_abort_transaction(trans, root, ret); + goto out_fail; + } } fixup_inode_flags(new_dir, old_inode); @@ -7098,7 +7264,10 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, ret = btrfs_add_link(trans, new_dir, old_inode, new_dentry->d_name.name, new_dentry->d_name.len, 0, index); - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + goto out_fail; + } if (old_ino != BTRFS_FIRST_FREE_OBJECTID) { struct dentry *parent = new_dentry->d_parent; @@ -7323,7 +7492,12 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode, ins.offset, ins.offset, ins.offset, 0, 0, 0, BTRFS_FILE_EXTENT_PREALLOC); - BUG_ON(ret); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + if (own_trans) + btrfs_end_transaction(trans, root); + break; + } btrfs_drop_extent_cache(inode, cur_offset, cur_offset + ins.offset -1, 0); @@ -7345,7 +7519,13 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode, } ret = btrfs_update_inode(trans, root, inode); - BUG_ON(ret); + + if (ret) { + btrfs_abort_transaction(trans, root, ret); + if (own_trans) + btrfs_end_transaction(trans, root); + break; + } if (own_trans) btrfs_end_transaction(trans, root); |