git: sys/dev/disk/dm: Sync with Linux changes in flakey read behavior

[Tomohiro Kusumi]

commit ca8d604703937a2b1a4f677d75adf432bf9f43e2
Author: Tomohiro Kusumi <kusumi.tomohiro at gmail.com>
Date:   Tue Nov 22 23:50:01 2016 +0900

    sys/dev/disk/dm: Sync with Linux changes in flakey read behavior
    
    Synw with the following Linux kernel commits.
    99f3c90d0d85708e7401a81ce3314e50bf7f2819
    299f6230bc6d0ccd5f95bb0fb865d80a9c7d5ccc
    
    Note that above commits and this commit change read behavior.
    It seems the existing read behavior was not what dm-flakey was
    originally designed to be.
    
    DragonFly's dm-flakey basically just does what Linux dm-flakey
    does, so this commit just syncs with above changes.

Summary of changes:
 share/man/man4/dm_target_flakey.4                 |  2 +-
 sys/dev/disk/dm/targets/flakey/dm_target_flakey.c | 30 ++++++++++++++++++++---
 2 files changed, 28 insertions(+), 4 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/ca8d604703937a2b1a4f677d75adf432bf9f43e2


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