multiple pending filesystem requests for the same block ?

[Poul-Henning Kamp]

In message <20050726065444.A37735 at xorpc.icir.org>, Luigi Rizzo writes:
>(context: SoC work on pluggable disk schedulers,
>	http://wikitest.freebsd.org/moin.cgi/Hybrid
>
>
>The doubt we have is the following:
>
>	can the filesystem code have multiple pending write requests for
>	the same disk block ?

If the filesystem does that, it will get no guarantee in which order
they are written.

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