func (l *Log) putBuffer(b *buffer) {
	if b.Len() >= 256 {
		// Let big buffers die a natural death.
		return
	}
	l.freeListMu.Lock()
	b.next = l.freeList
	l.freeList = b
	l.freeListMu.Unlock()
}
func (l *Log) putBuffer(b *buffer) {
	if b.Len() >= 256 {
		
		return
	}
	l.freeListMu.Lock()
	b.next = l.freeList
	l.freeList = b
	l.freeListMu.Unlock()
}
func ( l * Log ) putBuffer ( b * buffer ) { if b . Len ( ) >= 256 { // Let big buffers die a natural death. return } l . freeListMu . Lock ( ) b . next = l . freeList l . freeList = b l . freeListMu . Unlock ( ) }
// putBuffer returns a buffer to the free list.
putBuffer returns a buffer to the free list .