OpenAFS Master Repository branch, master, updated. openafs-devel-1_5_74-25-gd4e66ef

[Gerrit Code Review]

The following commit has been merged in the master branch:
commit d4e66ef219c88cdb17f2e860027cf6752ea21b17
Author: Simon Wilkinson <sxw@your-file-system.com>
Date:   Thu Apr 22 22:24:11 2010 +0100

    Unix: Modify disk cache versioning
    
    This change increments the disk cache version number, and adds a
    structure size record to the disk cache header. All old disk caches
    will be replaced when the client is started.
    
    With the various changes made to unify our file handles, and to
    support large file handles on Linux, the size of the 'fcache'
    structure was modified earlier in the 1.5 series. However, fcache
    is also the building block of the CacheItems file, so these changes
    inadvertently broke users upgrading from 1.4. In addition, as the
    disk cache inode is now a union of many different structures, the
    structure size is now potentially volatile across both kernel, and
    OpenAFS revisions.
    
    Up the version number so old disk caches are invalidated and won't
    crash users who are upgrading. Also take the opportunity to add an
    item to the header which stores the size of struct fcache used
    by the disk cache. If the size on disk doesn't match that expected
    by the kernel module, truncate the cache and start again.
    
    Change-Id: I2ee8863d0bfaaaba34272c9e139638e17669a53e
    Reviewed-on: http://gerrit.openafs.org/1811
    Reviewed-by: Andrew Deason <adeason@sinenomine.net>
    Reviewed-by: Marc Dionne <marc.c.dionne@gmail.com>
    Reviewed-by: Derrick Brashear <shadow@dementia.org>
    Tested-by: Derrick Brashear <shadow@dementia.org>

 src/afs/afs.h        |    7 ++-----
 src/afs/afs_dcache.c |    1 +
 src/afs/afs_init.c   |    2 ++
 3 files changed, 5 insertions(+), 5 deletions(-)

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