Re: [PATCH v7 0/7] Add O_DENY* support for VFS and CIFS/NFS

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



2014/1/17 Frank Filz <ffilzlnx@xxxxxxxxxxxxxx>:
> This looks wonderful and will be useful to the Ganesha user space NFS server
> also.
>
> I do have a couple questions.
>
> 1. How will this interact with the idea of private locks from the patch set
> Jeff Layton has been pushing?

They don't touch each other.

>
> 2. If a process opens multiple file descriptors with deny modes, will they
> conflict with each other (which is the behavior we will want for Ganesha).

Yes, a deny mode is associated with file descriptor - so, it will
conflict with any other access/deny modes of file descriptors from any
process.

>
> 3. Is there any functionality to upgrade or downgrade the access and deny
> modes (thinking in terms of NFS v4 support of OPEN upgrade and
> OPEN_DOWNGRADE operations).

The proposed patchset doesn't allow to change deny modes after an open
is done. But we can add a functionality to let flock syscall change
deny modes as on option.

-- 
Best regards,
Pavel Shilovsky.
--
To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux