[Devel] Re: [PATCH 01/11] sysfs: Support for preventing unmounts.

Benjamin Thery Benjamin.Thery at bull.net
Thu Jun 19 13:19:41 PDT 2008


Quoting Dave Hansen <dave at linux.vnet.ibm.com>:

> On Wed, 2008-06-18 at 13:12 -0700, Eric W. Biederman wrote:
>>
>> - The data in sysfs fundamentally changes behind the back of the
>>   VFS and we need to keep the VFS in sync.  Essentially this is the
>>   distributed filesystem problem.
>>
>> - In particular for sysfs_rename and sysfs_move_dir we need to support
>> finding
>>   the dcache entries and calling d_move.  So that the dcache does not
>>   get into an inconsistent state.  Timeouts and invalidates like NFS
>>   uses are to be  avoided if at all possible.
>
> Much clearer now, thanks!
>
> Can we get this description into the changelog, pretty please?

Yes sure.
I'll add it to the patch introduction.

Benjamin

>
> -- Dave
>
>
>



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