vmpressure: do not check for pending work to prevent from new work

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / vmpressure.c

diff --git a/mm/vmpressure.c b/mm/vmpressure.c
index 736a601..192f973 100644 (file)
--- a/mm/vmpressure.c
+++ b/mm/vmpressure.c
@@ -180,12 +180,12 @@ static void vmpressure_work_fn(struct work_struct *work)
        if (!vmpr->scanned)
                return;
 
-       mutex_lock(&vmpr->sr_lock);
+       spin_lock(&vmpr->sr_lock);
        scanned = vmpr->scanned;
        reclaimed = vmpr->reclaimed;
        vmpr->scanned = 0;
        vmpr->reclaimed = 0;
-       mutex_unlock(&vmpr->sr_lock);
+       spin_unlock(&vmpr->sr_lock);
 
        do {
                if (vmpressure_event(vmpr, scanned, reclaimed))
@@ -240,13 +240,13 @@ void vmpressure(gfp_t gfp, struct mem_cgroup *memcg,
        if (!scanned)
                return;
 
-       mutex_lock(&vmpr->sr_lock);
+       spin_lock(&vmpr->sr_lock);
        vmpr->scanned += scanned;
        vmpr->reclaimed += reclaimed;
        scanned = vmpr->scanned;
-       mutex_unlock(&vmpr->sr_lock);
+       spin_unlock(&vmpr->sr_lock);
 
-       if (scanned < vmpressure_win || work_pending(&vmpr->work))
+       if (scanned < vmpressure_win)
                return;
        schedule_work(&vmpr->work);
 }
@@ -367,7 +367,7 @@ void vmpressure_unregister_event(struct cgroup *cg, struct cftype *cft,
  */
 void vmpressure_init(struct vmpressure *vmpr)
 {
-       mutex_init(&vmpr->sr_lock);
+       spin_lock_init(&vmpr->sr_lock);
        mutex_init(&vmpr->events_lock);
        INIT_LIST_HEAD(&vmpr->events);
        INIT_WORK(&vmpr->work, vmpressure_work_fn);