Re: [PATCH] Linux 0.01 disk lockup

[Arnaldo Carvalho de Melo]

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