Commit 44fa34cd authored by Tigran Mkrtchyan's avatar Tigran Mkrtchyan
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nfs4: improve state handler concurrency

The state handler keeps track of NFSv4 clients. This duty is not
symmetric - updates happen when a client is added or removed, but
queried almost for any compound operation in a session. Thus on a
busy system we can observe thread serialization.

replace synchronized blocks with read/write locks.

a better concurrency in a multi-client environment.

Acked-by: Paul Millar
Acked-by: Albert Rossi
Target: master
parent ea6f71a3
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