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When write(2) on eventfd object fails with the error EAGAIN do not return

Description

When write(2) on eventfd object fails with the error EAGAIN do not return
the number of bytes written.

MFC after: 1 week

Details

Provenance
dchaginAuthored on
Parents
rS297296: Implement O_NONBLOCK flag via fcntl(F_SETFL) for eventfd object.
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