MailScanner: mremap moved 280 cows

[Matt Kettler]

At 10:42 AM 11/4/2004, Quintin Giesbrecht wrote:
>I found this on my console screen this morning...
>
>Anyone know what it means?
>
>MailScanner: mremap moved 280 cows
>

cows: copy-on-write pages.  That message is a warning generated by the
2.6.x linux kernel, indicating it's having to do some rather non-optimal
behaviors to work around what mremap is doing. I believe 2.6.6 and higher
have this fixed with a better handling of CoW pages in mremap.c

Some related discussion:
http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.6-rc3/2.6.6-rc3-mm1/broken-out/rmap-11-mremap-moves.patch

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