[Bugs] [Bug 1533804] New: readdir-ahead: change of cache-size should be atomic

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1533804

            Bug ID: 1533804
           Summary: readdir-ahead: change of cache-size should be atomic
           Product: GlusterFS
           Version: mainline
         Component: unclassified
          Assignee: bugs at gluster.org
          Reporter: zhhuan at gmail.com
                CC: bugs at gluster.org



Description of problem:
For readdir-ahead xlator, change of cache-size is not atomic. Need to convert
its variable type to atomic to protect concurrent change of its value.

Version-Release number of selected component (if applicable):


How reproducible:


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Expected results:


Additional info:

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