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SubjectRe: PATCH loopback block device fixes

On Tue, 14 Nov 2000, Jeff Garzik wrote:

> Since I am not a block device expert, I am interested to know if
> these fixes look ok, and if they fix the reported loopback deadlocks.
> I added calls to deactive_page and flush_dcache_page, and made sure
> that any error returns were propagated back to the caller.

The former looks fine (but I'ld rather cc that to VM folks). The latter
is patently useless - for one thing, caller doesn't give a damn for
the exact error value, for another it couldn't pass it further even
if it wanted. We have no way to tell what went wrong when IO request
fails - every async error turns into -EIO.

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