Hello
We increased bgwriter_lru_maxpages limit in 10 release [1]. Docs now are changed correctly but in REL_10_STABLE postgresql.conf.sample we still have comment "0-1000 max buffers written/round".
Master (and REL_11_STABLE) was updated later in 611fe7d4793ba6516e839dc50b5319b990283f4f, but not REL_10. I think we need backpatch this line.
* http://postgr.es/m/f6e58a22-030b-eb8a-5457-f62fb08d701c@BlueTreble.com
regards, Sergei