Re: [PATCH, RFC] what's the point of mtd_inodefs?

[Christoph Hellwig]

On Wed, Oct 23, 2013 at 07:50:17AM +0200, Richard Weinberger wrote:
> On Tue, Oct 22, 2013 at 5:33 PM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
> > I've been looking at mtdchar as part of a bigger series touching all
> > kidns of places and really wonder what the point of mtd_inodefs is.
> 
> As far I can tell it was introduced because of that issue:
> http://lists.infradead.org/pipermail/linux-mtd/2010-April/029593.html

Not sure how that issue came up as writeback only ever uses
mapping->backing_dev_info for block devices, else it only uses s_bdi to
avoid this issue.  As pointed out somewhere in that thread the mem
driver uses a similar scheme.

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