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btrfs: Add assert in __btrfs_del_delalloc_inode 

The invariant is that when nr_delalloc_inodes is 0 then the root
mustn't have any inodes on its delalloc inodes list.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2018-04-27 12:21:52 +03:00 committed by David Sterba
parent 0f96f517dc
commit 7c8a0d363a
1 changed files with 1 additions and 0 deletions
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fs/btrfs/inode.c
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@ -1754,6 +1754,7 @@ void __btrfs_del_delalloc_inode(struct btrfs_root *root,
&inode->runtime_flags);
root->nr_delalloc_inodes--;
if (!root->nr_delalloc_inodes) {
ASSERT(list_empty(&root->delalloc_inodes));
spin_lock(&fs_info->delalloc_root_lock);
BUG_ON(list_empty(&root->delalloc_root));
list_del_init(&root->delalloc_root);