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Diffstat (limited to 'fs/btrfs/inode.c')
-rw-r--r--fs/btrfs/inode.c378
1 files changed, 279 insertions, 99 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 41132339e2e..d6420cca9c8 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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 10:25:20 +0000