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Commit 1ad1a93a authored by Vinayak Menon's avatar Vinayak Menon Committed by Kyle Yan
Browse files

mm: process_reclaim: fix reclaim skip on low efficiency 



The logic used to skip reclaim on low efficiency results
in process reclaim not triggering at all. Fix it by
properly handling the skip_reclaim atomic variable.

Change-Id: I119097bb9b1baf8f3e8d4afa0a6dc2c30c0de6e7
Signed-off-by: default avatarVinayak Menon <vinmenon@codeaurora.org>
parent 9caa3b38

mm/process_reclaim.c

+2 −2
Original line number Diff line number Diff line
@@ -208,7 +208,7 @@ static void swap_fn(struct work_struct *work) 


		if (efficiency < swap_opt_eff) {

			if (++monitor_eff == swap_eff_win) {

				atomic_set(&skip_reclaim, swap_eff_win + 1);

				atomic_set(&skip_reclaim, swap_eff_win);

				monitor_eff = 0;

			}

		} else {
@@ -232,7 +232,7 @@ static int vmpressure_notifier(struct notifier_block *nb, 
	if (!current_is_kswapd())

		return 0;



	if (!atomic_dec_and_test(&skip_reclaim))

	if (atomic_dec_if_positive(&skip_reclaim) >= 0)

		return 0;



	if ((pressure >= pressure_min) && (pressure < pressure_max))