Eliminating swapping, no secondary storage

Todd Malsbary (todd@lister.acm.wwu.edu)
Fri, 13 Aug 1999 12:21:29 -0700 (PDT)

I'm working on porting linux to a device with no secondary storage, i.e. I
have only ram. The kernel is running, but is very unstable. I believe
this to be because of swapping issues; the errors are get look like the
following:

# ls /sbin
put_dirty_page: page already exists
swap_duplicate: entry fffbea00, nonexistent swap file
swap_free: Trying to free nonexistent swap-page

Out of memory for ls.
Killed
#

One of the solutions I've been considering is to rewrite bdflush and/or
kswapd so that they don't try to do any swapping out of dirty pages. But
before I do, I wanted to see if anybody has done this before and could
point me in the right direction. So if anybody has, I'd greatly
appreciate your help. Thanks,
Todd

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