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linux(4): Handle special case for regular futex in handle_futex_death().

Description

linux(4): Handle special case for regular futex in handle_futex_death().

Handle some races in handle_futex_death() which can prevents a wakeup of
potential waiters which can cause these waiters to block forever.

Differential Revision: https://reviews.freebsd.org/D31280
MFC after: 2 weeks

Details

Provenance
dchaginAuthored on Jul 29 2021, 9:51 AM
Differential Revision
D31280: linux(4): Handle special case for regular futex in handle_futex_death().
Parents
R10:dad107705667: linux(4): Futex address must be 32-bit aligned.
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