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Re: [PATCH v1 1/1] s390x: css: report errors from ccw_dstream_read/write

From: Pierre Morel
Subject: Re: [PATCH v1 1/1] s390x: css: report errors from ccw_dstream_read/write
Date: Thu, 8 Apr 2021 18:18:32 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.9.0

On 4/8/21 3:23 PM, Cornelia Huck wrote:
On Thu, 8 Apr 2021 14:32:11 +0200
Pierre Morel <pmorel@linux.ibm.com> wrote:

On 4/8/21 11:02 AM, Cornelia Huck wrote:
On Wed, 7 Apr 2021 19:47:11 +0200
Halil Pasic <pasic@linux.ibm.com> wrote:
So this begs the question, do we need this fixed for old releases as well?

My answer is yes we do. Conny what do you think?

What do you mean with "old releases"? The dstream rework was in 2.11,
and I doubt that anyone is using anything older, or a downstream
release that is based on pre-2.11.

If you mean "include in stable", then yes, we can do that; if we want
the commit in 6.0, I need the final version soon.

OK, are you OK with the two change propositions I sent?

1) let the 3270 decide for internal errors (-EIO) but return the error
for CSS errors in handle_payload_3270_write()

2) for senseid, always ask CSS to update the residual count
but only erase the senseid if the write succeeded

I think both make sense.

OK I send a v2


Pierre Morel
IBM Lab Boeblingen

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