On Mon, Nov 19 2001, Marco Berizzi wrote:
> Hi everybody.
> 
> I have just upgraded my PC from 768MB RAM to 1GB.
> I have recompiled the kernel (2.4.14) for hi mem support (4GB).
> 
> Now it's appening a very strange behaviour.
> I have several file system on the same disk (vfat file system). I have
> compiled vfat driver as a module. So before try to mount I must issue a
> 'modprobe vfat'. I'm using Slackware 8.0. modutils version is 2.4.6
> 
> Then if I try to copy a file from that filesystem to the root filesystem
> I get this error:
> 
> Kernel panic: too few segs for DMA mappings increase AHC_NSEG

Aha! Finally someone that can provoke this easily. Could you please
apply attached patch and reproduce? Thanks.

-- 
Jens Axboe