pi-futex: set PF_EXITING without taking ->pi_lock

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It is a bit annoying that do_exit() takes ->pi_lock to set PF_EXITING.  All
we need is to synchronize with lookup_pi_state() which saw this task
without PF_EXITING under ->pi_lock.

Change do_exit() to use spin_unlock_wait().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Oleg Nesterov 2007-10-16 23:26:47 -07:00 • committed by Linus Torvalds

parent 7917ff9a4c

commit d2ee7198cc

1 changed files with 3 additions and 3 deletions

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kernel/exit.c

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