[OpenAFS-devel] afs_osi_Sleep and afs_osi_Wakeup on Linux

[chas williams]

In message <OFC1602E42.3EC66AAB-ON85256BCE.00630636@in.ibm.com>,"Srikanth Vishw
anathan" writes:
>If afs_getevent() returns NULL, sleep will return prematurely. But this
>is no different from a spurious wakeup. The caller makes sure that sleep
>is called in a "while(condition not satisfied) sleep" loop that takes
>care of this.

the while() does handle the condition for a spurious wakeup.  i believe
all the parts have been found in the afs code that dont loop but you
never know. 

however, it probably is still not a good idea to drop the GLOCK during
afs_addevent().  since your previous race was related to GLOCK's being
droppped too soon, it would probably be best if afs_addevent/afs_getevent
didnt drop the GLOCK.  if you keep afs_getevent from dropping the lock
there is no reason that afs_getevent and afs_addevent cant be merged back
together.