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SubjectRe: [PATCH] Linux 0.01 disk lockup
Em Thu, Sep 27, 2001 at 03:34:11PM +0200, Mikulas Patocka escreveu:
> Linux 0.01 has a bug in disk request sorting - when interrupt happens
> while sorting is active, the interrupt routine won't clear do_hd - thus
> the disk will stay locked up forever.
>
> Function add_request also lacks memory barriers - the compiler could
> reorder writes to variable sorting and writes to request queue - producing
> race conditions. Because gcc 1.40 does not have __asm__("":::"memory"), I
> had to use dummy function call as a memory barrier.
>
> The following patch fixes both issues.

Fantastic! who is the maintainer for the 0.x kernel series these days? I
thought that 2.0 was Dave W., 2.2 was Alan, 2.4 Linus, so now we have to
find people for 1.2 and finally get 1.2.14 released, man, how I wanted one
with the dynamic PPP code in back in those days... 8)

- Arnaldo
-
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