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Btrfs: fix missing reserved space release in error path of delalloc reservation 

We forget to release the reserved space in the error path of delalloc
reservatiom, fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Miao Xie 2012-12-05 10:53:25 +00:00 committed by Chris Mason
parent 543eabd5e1
commit 4b5829a8e3
1 changed files with 7 additions and 0 deletions
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7
fs/btrfs/extent-tree.c
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@ -4559,6 +4559,9 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
ret = btrfs_qgroup_reserve(root, num_bytes +
nr_extents * root->leafsize);
if (ret) {
spin_lock(&BTRFS_I(inode)->lock);
calc_csum_metadata_size(inode, num_bytes, 0);
spin_unlock(&BTRFS_I(inode)->lock);
mutex_unlock(&BTRFS_I(inode)->delalloc_mutex);
return ret;
}
@ -4594,6 +4597,10 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
btrfs_ino(inode),
to_free, 0);
}
if (root->fs_info->quota_enabled) {
btrfs_qgroup_free(root, num_bytes +
nr_extents * root->leafsize);
}
mutex_unlock(&BTRFS_I(inode)->delalloc_mutex);
return ret;
}