OpenAFS Master Repository branch, master, updated. BP-openafs-stable-1_8_x-411-ge6b97b3

[Gerrit Code Review]

The following commit has been merged in the master branch:
commit e6b97b337bc97fdb1c8e4f1a0572c62dfc82d979
Author: Andrew Deason <adeason@sinenomine.net>
Date:   Mon Jul 29 18:17:21 2019 -0500

    afs: Skip IsDCacheSizeOK for CDirty/VDIR
    
    IsDCacheSizeOK currently can incorrectly flag a dcache as corrupted,
    since the size of a dcache may not match the size of the underlying
    file in a couple of RW conditions:
    
    - If someone is writing to a file beyond EOF, the intermediate
      'sparse' area may be populated by 0-length dcaches until the data is
      written to the fileserver.
    
    - Directories may be modified locally instead of being fetched from
      the fileserver, which can sometimes result in a directory blob of
      differing sizes.
    
    To avoid false positives detecting dcache corruption, just skip the
    IsDCacheSizeOK check for directories, and any file with pending writes
    (CDirty).
    
    Also add some extra information to the logging messages when this
    "corruption" is detected, so false positives may be more easily
    detected in the future.
    
    Change-Id: I5130287d0de791cffea85aaec5a0899d5c8d092e
    Reviewed-on: https://gerrit.openafs.org/13747
    Tested-by: BuildBot <buildbot@rampaginggeek.com>
    Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

 src/afs/afs_dcache.c |   47 ++++++++++++++++++++++++++++++++++++++++++-----
 1 files changed, 42 insertions(+), 5 deletions(-)

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