Re: [Ext2-devel] Re: [RFC] ext3/jbd race: releasing in-use journal_heads

[Suparna Bhattacharya <suparna@in.ibm.com>]

On Mon, Mar 07, 2005 at 11:37:42PM -0800, Andrew Morton wrote:
> Suparna Bhattacharya <suparna@in.ibm.com> wrote:
> >
> > (let me know if the interface in the patch
> >  I just posted seems like the right direction to use when we go for the
> >  cleanup)
> 
> Well what are the semantics?  Pass in an inclusive max_index and the gang
> lookup functions terminate when they hit an item whose index is greater
> than max_index?  And return the number of items thus found?

Yes. (end_index or max_items, whichever it hits first)

> 
> Seems sensible, and all the comparisons do the right thing if max_index = -1.

end_index is unsigned long - so -1 would imply highest index possible
... i.e. all items, subject to the radix_tree_maxindex (max_index used
internally in the radix tree code).


Regards
Suparna

> 
> 
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-- 
Suparna Bhattacharya (suparna@in.ibm.com)
Linux Technology Center
IBM Software Lab, India