Re: [PATCH] ceph: fail the open_by_handle_at() if the dentry is being unlinked

[Xiubo Li <xiubli@redhat.com>]

On 9/11/23 18:07, Sebastian Hasler wrote:
> On 11/09/2023 05:21, Xiubo Li wrote:
>
>> "This will generally not work if the file has  a  link  count of 
>> zero  (files  created  with  O_TMPFILE and without O_EXCL are an 
>> exception)."
> In this sentence, "generally" probably means "typically", so it 
> depends on the specific file system's behavior. I don't know the 
> CephFS behavior in this case. However, at least files created with 
> O_TMPFILE are an exception. Does CephFS support creating files with 
> O_TMPFILE? Such files can (and often will) go from the unlinked and 
> open state to the linked and closed state.
>
Hmm, yeah. I didn't see anywhere is disallowing to create with 
O_TMPFILE. Let me have a look at this case carefully later.

Thanks very much for your reporting Sebastian.

- Xiubo