Why is the pkgOperationsMutex a sync.Mutex instead of a sync.RWMutex?

[tanght1994]

The var pkgOperationsMutex in the log.go, Use sync.RWMutex to replace the sync.Mutex can Improve the performance

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[tanght1994]

Can i push a request to fix that? I'm using github for the first time, so I'm afraid to commit request.