fdisk/geom, AoE 5.2.1
Poul-Henning Kamp
phk at phk.freebsd.dk
Thu Oct 7 07:25:17 PDT 2004
In message <Pine.LNX.4.60.0410070951230.25784 at athena>, Sam writes:
>Arg. My goof. I wrote zeros, read zeros and assumed i could
>write to the disk. In fact I could - even when I wanted to
>read. I won't go into the details, but suffice it to say you
>can't do:
>
>if (bp->bio_flags & BIO_READ)
> // do read
>else
> // do write
>
>and expect the correct behaviour. :)
Please be aware that we have _three_ I/O operations under 5.x and
later: BIO_READ, BIO_WRITE and BIO_DELETE. Just return EOPNOTSUPP
for BIO_DELETE.
--
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.
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