Re: [PATCH 1/7] block: Add block_flush_device()

Mark Lord
2009-03-31T16:37:58Z

Eric Sandeen wrote:
> Mark Lord wrote:
..
>> XFS appears to have something along those lines.
>> I believe it tries to disable the drive write caches
>> if it discovers that it cannot do cache flushes.
>
> No, it just stops issuing barriers if the initial mount-time test finds
> that they're not supported. ext3/4/reiserfs do similar.
..

Okay. My apologies to the XFS folks!

I'll have to dig deeper to find out who/what is disabling
the drive write caches, then.

Thanks