Re: [PATCH 1/6] Change inode_operations.mkdir to return struct dentry *

[Al Viro]

On Fri, Feb 21, 2025 at 10:36:30AM +1100, NeilBrown wrote:

> Not all filesystems reliably result in a positive hashed dentry:
> 
> - NFS, cifs, hostfs will sometimes need to perform a lookup of
>   the name to get inode information.  Races could result in this
>   returning something different. Note that this lookup is
>   non-atomic which is what we are trying to avoid.  Placing the
>   lookup in filesystem code means it only happens when the filesystem
>   has no other option.

At least in case of cifs I don't see that lookup anywhere in your
series.  Have I missed it, or...?