Re: the idea for improving the performance of b-tree search

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On Wed, Oct 13, 2010 at 10:22:30AM -0500, David Nicol wrote:
> On Wed, Oct 13, 2010 at 6:24 AM, Chris Mason <chris.mason@xxxxxxxxxx> wrote:
> 
> > 3) Do delayed inode deletion.  See above, but change the word insert
> > with delete ;)
> 
> And the reserved-for-the-future-but-not-used-yet flags field in the
> ioctl#21 control structure gets a use: bits to indicate for the
> completion of which of the potential delayed things the caller is
> waiting.

This is similar to the delayed allocation we already do for file data
extents.  It is supposed to be transparent to userland, and just a way
to more efficiently poke the on disk structures.

-chris
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