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List:       linux-fsdevel
Subject:    Re: [RFC] Quota reentrancy & locking
From:       Andrew Morton <andrewm () uow ! edu ! au>
Date:       2001-06-28 5:03:45
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Jan Kara wrote:
> 
>   Quota file can grow only if you write quota for some user (group)
> for the first time. I think that after adding ~23 quota structures
> quotafile should grow (you can do this for example by creating files
> owned by users who never appeared on the system). But note that quota file
> never shrinks and space after empty structures is reused so getting quota file
> grow will be harder and harder provided you don't want to add more
> and more users... If you run quotacheck it will free any unused space
> and so it's easier to grow quota file afterwards.

Thanks.
 
> > We need to decide how to proceed with this.  Should ext[23]
> > do something to avoid the lock_super() problem, or should they
> > wait for the dquot_initialize() changes?
>   I'm currently (and will be aproximately till the end of July) at
> the university in USA at some exchange program and so I don't have computer
> on which I could test kernel patches... So till that time I won't be
> able to do reliable patches. Because it seems it's not so
> hard to put quota allocation out of lock_super() it would be (at least for now)
> better solution to do so.

OK.  I had patches which did this, but tossed them out
because it was all a little premature.  I think Al has
patches which do this for ext2, so I'll use them when
they turn up.
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