On Tue, 17 Nov 1998, Gopinath wrote:
> What will happen if the interrupt is allowed to trigger bottom half
> processing ? (Has it got something to do with the bottom half processing
> being non-reentrant)
An interrupt shouldn't wander into bottom-half code. That could wreak havoc,
and it's therefore something to check for.
Instead, interrupts must set a flag for bottom-half processing to take place
later, when it's convenient and safe. This is what the mark_bh() function is
for.
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