--------
In message <[email protected]>, Andriy Gapon 
writes:
>On 12/03/2018 20:07, Poul-Henning Kamp wrote:
>> If we want to have an architectural sound way to do slow operations
>> before any "user-I/O" is initiated, the right way to do so is to
>> define new BIO_OPEN and BIO_CLOSE  operation, and insist via asserts
>> than all BIO_{READ|WRITE|DELETE} are wrapped in these.

>What do you think?

I don't see that changing anything...

GEOM rests on a set of assumptions, if you violate them, you get panics.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
[email protected]         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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