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Btrfs: free reserved space on error in a few places 

While trying to track down a reserved space leak I noticed a few places where we
won't properly clean up reserved space if we have an error, this patch fixes
those up.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
wifi-calibration
Josef Bacik 2013-10-07 15:21:08 -04:00 committed by Chris Mason
parent 0be5dc67c4
commit 857cc2fc29
2 changed files with 21 additions and 2 deletions
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21
fs/btrfs/extent-tree.c
View File

@ -2234,8 +2234,12 @@ static int run_one_delayed_ref(struct btrfs_trans_handle *trans,
{
int ret = 0;
if (trans->aborted)
if (trans->aborted) {
if (insert_reserved)
btrfs_pin_extent(root, node->bytenr,
node->num_bytes, 1);
return 0;
}
if (btrfs_delayed_ref_is_head(node)) {
struct btrfs_delayed_ref_head *head;
@ -2411,6 +2415,14 @@ static noinline int run_clustered_refs(struct btrfs_trans_handle *trans,
btrfs_free_delayed_extent_op(extent_op);
if (ret) {
/*
* Need to reset must_insert_reserved if
* there was an error so the abort stuff
* can cleanup the reserved space
* properly.
*/
if (must_insert_reserved)
locked_ref->must_insert_reserved = 1;
btrfs_debug(fs_info, "run_delayed_extent_op returned %d", ret);
spin_lock(&delayed_refs->lock);
btrfs_delayed_ref_unlock(locked_ref);
@ -6731,13 +6743,18 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
size += sizeof(*block_info);
path = btrfs_alloc_path();
if (!path)
if (!path) {
btrfs_free_and_pin_reserved_extent(root, ins->objectid,
root->leafsize);
return -ENOMEM;
}
path->leave_spinning = 1;
ret = btrfs_insert_empty_item(trans, fs_info->extent_root, path,
ins, size);
if (ret) {
btrfs_free_and_pin_reserved_extent(root, ins->objectid,
root->leafsize);
btrfs_free_path(path);
return ret;
}

2
fs/btrfs/inode.c
View File

@ -8498,6 +8498,8 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
ins.offset, 0, 0, 0,
BTRFS_FILE_EXTENT_PREALLOC);
if (ret) {
btrfs_free_reserved_extent(root, ins.objectid,
ins.offset);
btrfs_abort_transaction(trans, root, ret);
if (own_trans)
btrfs_end_transaction(trans, root);