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btrfs: move transaction aborts to the point of failure 

Call btrfs_abort_transaction as early as possible when an error
condition is detected, that way the line number reported is useful
and we're not clueless anymore which error path led to the abort.

Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
David Sterba 2012-09-18 07:52:32 -06:00 committed by Chris Mason
parent 8732d44f80
commit 005d6427ac
4 changed files with 80 additions and 47 deletions
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5
fs/btrfs/ctree.h
View File

@ -3400,6 +3400,11 @@ static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info,
}
}
/*
* Call btrfs_abort_transaction as early as possible when an error condition is
* detected, that way the exact line number is reported.
*/
#define btrfs_abort_transaction(trans, root, errno) \
do { \
__btrfs_abort_transaction(trans, root, __func__, \

56
fs/btrfs/extent-tree.c
View File

@ -5123,8 +5123,10 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
ret = remove_extent_backref(trans, extent_root, path,
NULL, refs_to_drop,
is_data);
if (ret)
goto abort;
if (ret) {
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
btrfs_release_path(path);
path->leave_spinning = 1;
@ -5142,8 +5144,10 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
btrfs_print_leaf(extent_root,
path->nodes[0]);
}
if (ret < 0)
goto abort;
if (ret < 0) {
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
extent_slot = path->slots[0];
}
} else if (ret == -ENOENT) {
@ -5157,7 +5161,8 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
(unsigned long long)owner_objectid,
(unsigned long long)owner_offset);
} else {
goto abort;
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
leaf = path->nodes[0];
@ -5167,8 +5172,10 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
BUG_ON(found_extent || extent_slot != path->slots[0]);
ret = convert_extent_item_v0(trans, extent_root, path,
owner_objectid, 0);
if (ret < 0)
goto abort;
if (ret < 0) {
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
btrfs_release_path(path);
path->leave_spinning = 1;
@ -5185,8 +5192,11 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
(unsigned long long)bytenr);
btrfs_print_leaf(extent_root, path->nodes[0]);
}
if (ret < 0)
goto abort;
if (ret < 0) {
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
extent_slot = path->slots[0];
leaf = path->nodes[0];
item_size = btrfs_item_size_nr(leaf, extent_slot);
@ -5223,8 +5233,10 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
ret = remove_extent_backref(trans, extent_root, path,
iref, refs_to_drop,
is_data);
if (ret)
goto abort;
if (ret) {
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
}
} else {
if (found_extent) {
@ -5241,27 +5253,29 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
ret = btrfs_del_items(trans, extent_root, path, path->slots[0],
num_to_del);
if (ret)
goto abort;
if (ret) {
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
btrfs_release_path(path);
if (is_data) {
ret = btrfs_del_csums(trans, root, bytenr, num_bytes);
if (ret)
goto abort;
if (ret) {
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
}
ret = update_block_group(trans, root, bytenr, num_bytes, 0);
if (ret)
goto abort;
if (ret) {
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
}
out:
btrfs_free_path(path);
return ret;
abort:
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
/*

29
fs/btrfs/root-tree.c
View File

@ -141,8 +141,10 @@ int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
return -ENOMEM;
ret = btrfs_search_slot(trans, root, key, path, 0, 1);
if (ret < 0)
goto out_abort;
if (ret < 0) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
if (ret != 0) {
btrfs_print_leaf(root, path->nodes[0]);
@ -166,16 +168,23 @@ int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
btrfs_release_path(path);
ret = btrfs_search_slot(trans, root, key, path,
-1, 1);
if (ret < 0)
goto out_abort;
if (ret < 0) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
ret = btrfs_del_item(trans, root, path);
if (ret < 0)
goto out_abort;
if (ret < 0) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
btrfs_release_path(path);
ret = btrfs_insert_empty_item(trans, root, path,
key, sizeof(*item));
if (ret < 0)
goto out_abort;
if (ret < 0) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
l = path->nodes[0];
slot = path->slots[0];
ptr = btrfs_item_ptr_offset(l, slot);
@ -192,10 +201,6 @@ int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
out:
btrfs_free_path(path);
return ret;
out_abort:
btrfs_abort_transaction(trans, root, ret);
goto out;
}
int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,

37
fs/btrfs/volumes.c
View File

@ -1775,15 +1775,21 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
if (seeding_dev) {
ret = init_first_rw_device(trans, root, device);
if (ret)
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto error_trans;
}
ret = btrfs_finish_sprout(trans, root);
if (ret)
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto error_trans;
}
} else {
ret = btrfs_add_device(trans, root, device);
if (ret)
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto error_trans;
}
}
/*
@ -1814,7 +1820,6 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
error_trans:
unlock_chunks(root);
btrfs_abort_transaction(trans, root, ret);
btrfs_end_transaction(trans, root);
rcu_string_free(device->name);
kfree(device);
@ -3608,12 +3613,16 @@ static noinline int init_first_rw_device(struct btrfs_trans_handle *trans,
ret = __btrfs_alloc_chunk(trans, extent_root, &sys_map,
&sys_chunk_size, &sys_stripe_size,
sys_chunk_offset, alloc_profile);
if (ret)
goto abort;
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
ret = btrfs_add_device(trans, fs_info->chunk_root, device);
if (ret)
goto abort;
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
/*
* Modifying chunk tree needs allocating new blocks from both
@ -3623,19 +3632,19 @@ static noinline int init_first_rw_device(struct btrfs_trans_handle *trans,
*/
ret = __finish_chunk_alloc(trans, extent_root, map, chunk_offset,
chunk_size, stripe_size);
if (ret)
goto abort;
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
ret = __finish_chunk_alloc(trans, extent_root, sys_map,
sys_chunk_offset, sys_chunk_size,
sys_stripe_size);
if (ret)
goto abort;
btrfs_abort_transaction(trans, root, ret);
return 0;
out:
abort:
btrfs_abort_transaction(trans, root, ret);
return ret;
}