Messages in this thread | | | Subject | Re: SLEEP_ON_BKLCHECK | From | Arjan van de Ven <> | Date | Thu, 14 Apr 2005 08:46:30 +0200 |
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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 [unhandled content-type:application/pgp-signature] | |