Messages in this thread | | | Date | Mon, 26 Feb 2001 01:33:26 +0100 | From | Jens Axboe <> | Subject | Re: 2.4.2-ac3: loop threads in D state |
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On Sun, Feb 25 2001, Alexander Viro wrote: > Erm... Jens, it really should be > if (atomic_dec_and_test(...)) > up(...); > not just > atomic_dec(...); > up(...); > > Otherwise you can end up with too early exit of loop_thread. Normally > it would not matter, but in pathological cases...
How so? We dec it and up the semaphore, loop_thread runs until it's done and ups lo_sem.
-- Jens Axboe
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