Function acquireFileLock

fs.go:2074–2084

(absPath string)

}

func acquireFileLock(absPath string) *fileLock {
	filesLockMu.Lock()
	flock := filesLockMap[absPath]
	if flock == nil {
		flock = &fileLock{}
		filesLockMap[absPath] = flock
	}
	flock.refs++
	filesLockMu.Unlock()
	return flock
}

func releaseFileLock(absPath string, flock *fileLock) {
	filesLockMu.Lock()