From: Mike Snitzer <snitzer@redhat.com>
Date: Fri, 29 Jul 2016 17:19:55 +0000 (-0400)
Subject: dm flakey: error READ bios during the down_interval
X-Git-Tag: v3.2.84~100
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9994ec5fe7bb32bd2d36632c2250003d94a7f3c5;p=pandora-kernel.git

dm flakey: error READ bios during the down_interval

commit 99f3c90d0d85708e7401a81ce3314e50bf7f2819 upstream.

When the corrupt_bio_byte feature was introduced it caused READ bios to
no longer be errored with -EIO during the down_interval.  This had to do
with the complexity of needing to submit READs if the corrupt_bio_byte
feature was used.

Fix it so READ bios are properly errored with -EIO; doing so early in
flakey_map() as long as there isn't a match for the corrupt_bio_byte
feature.

Fixes: a3998799fb4df ("dm flakey: add corrupt_bio_byte feature")
Reported-by: Akira Hayakawa <ruby.wktk@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
[bwh: Backported to 3.2: in flakey_end_io(), keep using
 bio_submitted_while_down instead of pb->bio_submitted]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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