Re: [RFC/PATCH 1/5] mtd: ubi: Read disturb infrastructure

[Tanya Brokhman]

On 9/28/2014 3:11 PM, Artem Bityutskiy wrote:
> On Sun, 2014-09-28 at 09:37 +0300, Tanya Brokhman wrote:
> > The need for performing read disturb is determined according to new
> > statistics collected per eraseblock:
> > - read counter: incremented at each read operation
> >                  reset at each erase
> > - last erase time stamp: updated at each erase
> >
> > This patch adds the infrastructure for the above statistics
>
> Would you please provide some kind of high level description for this
> stuff. What is the problem at hand, how is it solved. Right off-the top
> of my head I have the following comment.
>
> Adding more fields to 'struct ubi_wl_entry' should be well-justified.
> These objects are per-PEB, so there may be really a lot of them, and
> they may consume a lot of memory. Increasing the size of the object may
> be affect the memory consumption a lot.
>
> So I wonder if these read counters solve a big enough problem, so that
> they are worth having in this data structure.
>
> So I am really missing the bigger picture here.

Sure, will add a documentation file to describe the need for this and 
the algorithm itself.

--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, 
hosted by The Linux Foundation
--
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/