[Bugs] [Bug 1211863] New: RFE: Support in md-cache to use upcall notifications to invalidate its cache

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1211863

            Bug ID: 1211863
           Summary: RFE: Support in md-cache to use upcall notifications
                    to invalidate its cache
           Product: GlusterFS
           Version: mainline
         Component: core
          Assignee: bugs at gluster.org
          Reporter: skoduri at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com



Description of problem:

"Upcall" feature enables clients to receive callback notifications from the
brick process on the file/dir entries (which it may cache) in case of any
change in the back-end by other clients.

Feature page URL:
http://www.gluster.org/community/documentation/index.php/Features/Upcall-infrastructure

md-cache can make use of this feature to invalidate its cache entries. This bug
is to track those changes.

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