Kernel Locking Question

[Nicholas Krause]

Greetings All, 
After learning about kernel locking and how atomic operations are good  in terms of improving CPU scalability in terms of making  a critical region much smaller. I 
was wondering of how this would improve file system scalability and reliability if implemented in file system code for btrfs worker threads. 
Nick
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Sent from my Android device with K-9 Mail. Please excuse my brevity.