3.14-stable review patch. If anyone has any objections, please let me know.
------------------ This reverts commit 623762517e2370be3b3f95f4fe08d6c063a49b06. Ben rightly points out that commit 0bf1457f0cfc, which is what this original commit was reverting, never ended up in 3.14-stable, but was only for 3.15. So revert this patch as we now have the same check twice in a row, which is pretty pointless. Although the comments were "prettier"... Cc: Ben Hutchings <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Christian Borntraeger <[email protected]> Cc: Christian Borntraeger <[email protected]> Cc: Rafael Aquini <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Linus Torvalds <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- mm/vmscan.c | 18 ------------------ 1 file changed, 18 deletions(-) --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1916,24 +1916,6 @@ static void get_scan_count(struct lruvec } /* - * Prevent the reclaimer from falling into the cache trap: as - * cache pages start out inactive, every cache fault will tip - * the scan balance towards the file LRU. And as the file LRU - * shrinks, so does the window for rotation from references. - * This means we have a runaway feedback loop where a tiny - * thrashing file LRU becomes infinitely more attractive than - * anon pages. Try to detect this based on file LRU size. - */ - if (global_reclaim(sc)) { - unsigned long free = zone_page_state(zone, NR_FREE_PAGES); - - if (unlikely(file + free <= high_wmark_pages(zone))) { - scan_balance = SCAN_ANON; - goto out; - } - } - - /* * There is enough inactive page cache, do not reclaim * anything from the anonymous working set right now. */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
