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devtmpfsd: fix task state handling

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- Set the state to TASK_INTERRUPTIBLE using __set_current_state()
  instead of set_current_state() as the spin_unlock is an implicit memory
  barrier.

- After return from schedule(), there is no need to set the current
  state to TASK_RUNNING - a call to schedule() always returns in
  TASK_RUNNING state.

Signed-off-by: Kautuk Consul <consul.kautuk@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kautuk Consul 2011-11-15 14:52:34 -08:00 committed by Greg Kroah-Hartman
parent 72f8c0bfa0
commit 65e6757be4
1 changed files with 1 additions and 2 deletions
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3
drivers/base/devtmpfs.c
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@ -413,10 +413,9 @@ static int devtmpfsd(void *p)
}
spin_lock(&req_lock);
}
set_current_state(TASK_INTERRUPTIBLE);
__set_current_state(TASK_INTERRUPTIBLE);
spin_unlock(&req_lock);
schedule();
__set_current_state(TASK_RUNNING);
}
return 0;
out: