Andrea, would you --- and everybody else who touches sysctl.h: *PLEASE*
read the comments at the top of that file, and fix your patch.
On Wed, 4 Nov 1998 17:09:09 +0100 (CET), Andrea Arcangeli
<andrea@e-mind.com> said:
> --- linux/include/linux/sysctl.h:1.1.1.3 Sat Oct 31 01:16:09 1998
> +++ linux/include/linux/sysctl.h Sat Oct 31 01:36:44 1998
> @@ -93,7 +93,6 @@
> enum
> {
> /*1*/ VM_SWAPCTL=1, /* struct: Set vm swapping control */
> - VM_SWAPOUT, /* int: Background pageout interval */
> VM_FREEPG, /* struct: Set free page thresholds */
> VM_BDFLUSH, /* struct: Control buffer cache flushing */
> VM_OVERCOMMIT_MEMORY, /* Turn off the virtual memory safety limit */
What this does is to renumber all the subsequent labels for a the binary
sysctl(2) interface, totally breaking the ABI.
I initially wrote this file in terms of #defines, not enums, explicitly
because it is harder to mess up the numbering that way. I don't know
who changed it to enums in 2.1, or why, but I've had to keep patching
the interface ever since: it's probably time I replaced it with #defines
again. :(
--Stephen
-
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