TASK_RUNNING state and interrupt handling

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Hi all,

I read following statement in "Understanding Linux
kernel" 

"the process on behalf of which an interrupt handler
is executed must always stay in the TASK_RUNNING
state, or a system freeze could occur."

I am not able to understand it clearly. so can anybody
plz explain it to me. 

Thanks in advance,
Deepak Joshi.



		
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