Ashish, Xavi,
I think it is better to implement this change as a separate
read-after-write caching xlator which we can load between EC and client
xlator. That way EC will not get a lot more functionality than necessary
and may be this xlator can be used somewhere else in the stack if
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https://bugzilla.redhat.com/1460620 / access-control: Unable to use CIDR
address annotation in nfs.rpc-auth-allow
https://bugzilla.redhat.com/1463365 / core: Changes for Maintainers 2.0
https://bugzilla.redhat.com/1460638 / disperse: ec-data-heal.t fails with brick
mux