| commit | fdc53cc7c5e423755fd5e68cf77e4cb58ce34679 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Mon, 22 Feb 2010 02:33:43 +0000 (21 18:33 -0800) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Mon, 22 Feb 2010 02:33:43 +0000 (21 18:33 -0800) | ||
| tree | a83d6ea21cf505a06bbd26af24666f64b814793c | treesnapshot (tar.gz zip) |
| parent | c2fb025d4cd1fc6d547f7ae973ee7b227c83bf15 | commitdiff |
kernel - SWAP CACHE part 22/many - Fix counter overflow introduced in part 21
* vm_swapcache_inactive_heuristic can overflow, making it extremely negative
and causing swapcache writing to cease for a long period of time.
* Two-in-one fix. Check if it is too negative and reset it. This also
automatically adjusts the heuristic if the sysop manually changes
the hysteresis to a smaller value.
* vm_swapcache_inactive_heuristic can overflow, making it extremely negative
and causing swapcache writing to cease for a long period of time.
* Two-in-one fix. Check if it is too negative and reset it. This also
automatically adjusts the heuristic if the sysop manually changes
the hysteresis to a smaller value.
| sys/vm/vm_swapcache.c | diffblobblamehistory |