RELENG_7: swap_pager_getswapspace(3): failed

Hi,

I updated to RELENG_7 two yesterday, and under usual load started
getting hundreds of messages

swap_pager_getswapspace(3): failed

The system swap is 96% full; it is less than 20% usually under the
same load. The system started to kill off processes because of lack of
swap space:

pid 52606 (thunderbird-bin), uid 1001, was killed: out of swap space
swap_pager_getswapspace(2): failed
pid 13984 (evince), uid 1001, was killed: out of swap space

I suppose there's no way to get back to the more stable BETA2 ? When
cvsuping, I noticed

52815 Nov  8 14:03 vm_page.c

had been changed. Might it be related to that? Might a next possible
change in that get back a more stable swapper. . .?

Must

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