OpenAFS Master Repository branch, openafs-stable-1_8_x, updated. openafs-stable-1_8_0-16-g92de726

[Gerrit Code Review]

The following commit has been merged in the openafs-stable-1_8_x branch:
commit 92de7260ee45200b6832cb7f727a582fc37c3699
Author: Andrew Deason <adeason@sinenomine.net>
Date:   Mon Apr 30 17:58:43 2018 -0500

    afs: WriteThroughDSlots: Avoid write error panic
    
    Currently, afs_WriteThroughDSlots panics if our call to
    afs_WriteDCache fails. Since afs_WriteThroughDSlots is called every
    minute by a background daemon, this means that if our cache fs becomes
    inaccessible (by being forced read-only, or for any other reason), we
    are virtually guaranteed to panic relatively quickly.
    
    To try to avoid this at least for some cases, change
    afs_WriteThroughDSlots to return an error to our caller when we
    encounter such an error. For our background task, we can just ignore
    the error and retry the writes on a future iteration. During shutdown,
    we still panic if we encounter an error, to try to avoid silently
    allowing a corrupt cache to be used on subsequent boots.
    
    Reviewed-on: https://gerrit.openafs.org/13047
    Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
    Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
    Tested-by: BuildBot <buildbot@rampaginggeek.com>
    (cherry picked from commit 46d5695a383b2b993fdd598b770f4e3c0e1a41f3)
    
    Change-Id: Iccbec550c00ac725c0033b075ac3cd0b4e1c78c2
    Reviewed-on: https://gerrit.openafs.org/13073
    Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
    Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
    Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
    Tested-by: BuildBot <buildbot@rampaginggeek.com>

 src/afs/afs_daemons.c    |    2 +-
 src/afs/afs_dcache.c     |   20 ++++++++++++++++----
 src/afs/afs_init.c       |    2 +-
 src/afs/afs_prototypes.h |    2 +-
 4 files changed, 19 insertions(+), 7 deletions(-)

-- 
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