Mateusz Guzik ffeb890592 filedesc: iterate over fd table only once in fdcopy
While here add 'fdused_init' which does not perform unnecessary work.

Drop FILEDESC_LOCK_ASSERT from fdisused and rely on callers to hold
it when appropriate. This function is only used with INVARIANTS.

No functional changes intended.
2014-10-31 09:19:46 +00:00
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