Re: Linux 2.6.29

[Jeff Garzik]

Ric Wheeler wrote:> And, as I am sure that you do know, to add insult to 
injury, FLUSH_CACHE
> is per device (not file system).
>
> When you issue an fsync() on a disk with multiple partitions, you will 
> flush the data for all of its partitions from the write cache....

SCSI'S SYNCHRONIZE CACHE command already accepts an (LBA, length) pair. 
 We could make use of that.

And I bet we could convince T13 to add FLUSH CACHE RANGE, if we could 
demonstrate clear benefit.

	Jeff



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