Re: [PATCH Linux 2.6.12-rc5-mm1 00/06] blk: barrier flushing reimplementation

[Jeff Garzik]

Tejun Heo wrote:
> 05_blk_scsi_turn_on_flushing_by_default.patch
> 	: turn on QUEUE_ORDERED_FLUSH by default if ordered tag isn't supported
>
> 	As flushing can now be used by devices which only support
> 	simple tags, there's no need to use
> 	Scsi_Host_Template->ordered_flush to enable it selectively.
> 	This patch removes ->ordered_flush and enables flushing
> 	implicitly when ordered tag isn't supported.  If the device
> 	doesn't support flushing, it can just return -EOPNOTSUPP for
> 	flush requests.  blk layer will switch to QUEUE_OREDERED_NONE
> 	automatically.


This is rather nice...

	Jeff


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