Re: [RFC PATCH v2] support ioctl for tunable user request

[Kyungmin Park]

Hi Christoph,

On Mon, Sep 5, 2011 at 6:15 PM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
> So what the heck is a tunable request supposed to be?  How does it
> qualify for beeing a generic request/bio type?

The concept is similar with DISCARD request except no-wait for request complete

 #define REQ_DISCARD            (1 << __REQ_DISCARD)
+#define REQ_TUNE               (1 << __REQ_TUNE)

As it's hard to detect the idle time at device level, user send the
tune request to device when idle.

Thank you,
Kyungmin Park
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/