On Thu, 2005-04-14 at 09:42 +0900, tsuchiya yoshihiro wrote: > Hi, > In Fedora Core3, interruptible_sleep_on() checks if the system is > lock_kernel()'ed > by SLEEP_ON_BKLCHECK. Same thing is done in RedHatEL4. > Also I found a patch including SLEEP_ON_BKLCHECK was posted before, > but is not included in 2.6.11. > Why SLEEP_ON_BKLCHECK checks lock_kernel ?
Because you really need to hold the BKL when you call sleep_on() family
of APIs, otherwise you have a very big race.
Also note that you in your code really should not call any of the
sleep_on() family of functions at all! It is a very very deprecated and
defective API!!!!
Can you give the URL to the code where you use this in?
(it is GPL code, right?)
Greetings,
Arjan van de Ven
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