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SubjectRe: [rfc] Ignore Fsync Calls in Laptop_Mode
On Mon, 30 May 2011, Valdis.Kletnieks@vt.edu wrote:

> On Mon, 30 May 2011 09:13:27 +0200, Oliver Neukum said:
>> Am Montag, 30. Mai 2011, 03:53:18 schrieb david@lang.hm:
>
>>> if what you are wanting is the ability to say 'these things must be
>>> written before these other things to keep them from being corrupted, but I
>>> don't care when they get written (or if they get lost in a crash)' then
>>> what you want isn't fsync, it's a barrier.
>>
>> Yes, but where is the problem?
>
> The problem is that *from userspace*, the closest approximation to a barrier
> is fsync().

good point, there really should be some way of doing a barrier from
userspace.

David Lang


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