On 10.05.2018 09:21, Omar Sandoval wrote:
> From: Omar Sandoval <[email protected]>
> 
> Currently, if btrfs_insert_orphan_item() fails, we release the reserved
> space and decrement root->orphan_inodes. However, we also ignore -EEXIST
> errors, so we still want the space reservation for when we delete the
> item, and we still need to count the orphan because we're still going to
> decrement root->orphan_inodes from btrfs_orphan_del() later.
> 
> Fixes: 4ef31a45a009 ("Btrfs: fix the error handling wrt orphan items")
> Signed-off-by: Omar Sandoval <[email protected]>

Reviewed-by: Nikolay Borisov <[email protected]>

> ---
>  fs/btrfs/inode.c | 13 +++++--------
>  1 file changed, 5 insertions(+), 8 deletions(-)
> 
> diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
> index 1460823951d7..e77df96de642 100644
> --- a/fs/btrfs/inode.c
> +++ b/fs/btrfs/inode.c
> @@ -3408,7 +3408,7 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans,
>       /* insert an orphan item to track this unlinked file */
>       if (insert) {
>               ret = btrfs_insert_orphan_item(trans, root, btrfs_ino(inode));
> -             if (ret) {
> +             if (ret && ret != -EEXIST) {
>                       if (reserve) {
>                               clear_bit(BTRFS_INODE_ORPHAN_META_RESERVED,
>                                         &inode->runtime_flags);
> @@ -3420,14 +3420,11 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans,
>                        * decrease ->orphan_inodes after everything is done.
>                        */
>                       atomic_dec(&root->orphan_inodes);
> -                     if (ret != -EEXIST) {
> -                             clear_bit(BTRFS_INODE_HAS_ORPHAN_ITEM,
> -                                       &inode->runtime_flags);
> -                             btrfs_abort_transaction(trans, ret);
> -                             return ret;
> -                     }
> +                     clear_bit(BTRFS_INODE_HAS_ORPHAN_ITEM,
> +                               &inode->runtime_flags);
> +                     btrfs_abort_transaction(trans, ret);
> +                     return ret;
>               }
> -             ret = 0;
>       }
>  
>       return 0;
> 
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