What do they mean by "code must be atomic" ?

I was reading about Tasklets. I found following sentence "Tasklets run in software interrupt context with the result that all tasklet code must be atomic".

What does author mean here ? :nonod:

 

I'm a newbie too but I found a great article about this subject.

http://dgd.is-here.com/faq/html/x440.html

Hope it helps!

 

Thanks a lot norahs63.

 

nice link, however for me it has something to do with the completeness and functionality of the codes. It should be flawless.