BTW, patch had conflicts with master. Please, find rebased version attached.
Despite by patch conflist patch looks commitable, has anybody objections to commit it?
Patch recieved several rounds of review during 2 years, and seems to me, keeping it out from sources may cause a lost it. Although it suggests performance improvement in rather wide usecases.
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Teodor Sigaev E-mail: teo...@sigaev.ru
WWW: http://www.sigaev.ru/
