Re: about TRIM/DISCARD support and barriers

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hello,

Raz Ben-Yehuda wrote:
> Tejun Hello
> Is there a WIKI for SSD disk in Linux?

Not that I know of.

> I want to understand what is the rational for the OS intervention. Why
> and when you discard, fsck changes, why and how IO scheduling is
> changed...

FTL (flash translation layer) in SSDs can do better job if the OS
tells it which area is unused so that the SSD can just drop or
overwrite those regions.

-- 
tejun
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