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RE: mac80211: ieee80211_ops.bss_info_changed question

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On Friday, April 04, 2008 7:43 AM, Johannes Berg  wrote:

> Reinette,
> 
>> In the comments about bss_info_changed it is said that the callback
>> has to be atomic. I was looking at it and could only find that it is
>> called either from the workqueue or an ioctl. It thus seems that we
>> may be able to sleep in there. I likely missed the spot where it
>> needs to be atomic ... could you please direct me to it?
> 
> I think you may be right, I can't find any spots either. I was likely
> mislead when writing that by the fact that much of the code in
> ieee80211_sta.c uses GFP_ATOMIC while it actually runs from a
> workqueue, which is actually confusing me still.

My mistake ... it can be called from tasklet during scanning
(ieee80211_sta_rx_scan). The comment that requires it to be atomic is
correct.

Reinette
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