Re: [RFC] page-writeback: move indoes from one superblock together

[Arjan van de Ven]

On Thu, 24 Sep 2009 21:46:25 +0800
Wu Fengguang <fengguang.wu@xxxxxxxxx> wrote:
> 
> Note that dirty_time may not be unique, so need some workaround.  And
> the resulted rbtree implementation may not be more efficient than
> several list traversals even for a very large list (as long as
> superblocks numbers are low).
> 
> The good side is, once sb+dirty_time rbtree is implemented, it should
> be trivial to switch the key to sb+inode_number (also may not be
> unique), and to do location ordered writeback ;)

would you want to sort by dirty time, or by inode number?
(assuming inode number is loosely related to location on disk)


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
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