[Gluster-devel] disabling caching and other optimizations for internal fops

[Raghavendra Bhat]

Hi,

As of now, the performance xlators cache the data and perform some 
optimizations for all the fops irrespective of whether the fop is 
generated from the application or internal xlator. I think, performance 
xlators should come in to picture for only the fops generated by the 
applications. Imagine the situation where a graph change happens and 
fuse xlator sends open call on the fds to migrate them to the new graph. 
But the open call might not reach posix if open-behind unwinds success 
to fuse xlator.

It can be done in 2 ways.

1) Set a key in dictionary if the call is generated internally
OR
2) Set a flag in the callstack itself, whether the fop is internal fop 
or generated from the application.

Please provide feedback.


Regards,
Raghavendra Bhat