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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-20 14:40:51 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-20 14:40:51 (GMT) |
commit | bc71c2df45e5a861818b5ee173702883df07471a (patch) | |
tree | cd008493efad9dc936d0d2574f26dc6c9c7cb785 /mm/swap.c | |
parent | 76d15c8fba655c9b2d60cf01834858f2c44483dc (diff) | |
parent | 33688abb2802ff3a230bd2441f765477b94cc89e (diff) | |
download | linux-bc71c2df45e5a861818b5ee173702883df07471a.tar.xz |
Merge 4.7-rc4 into usb-next
We need the 4.7-rc4 fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/swap.c')
-rw-r--r-- | mm/swap.c | 20 |
1 files changed, 19 insertions, 1 deletions
@@ -667,6 +667,24 @@ static void lru_add_drain_per_cpu(struct work_struct *dummy) static DEFINE_PER_CPU(struct work_struct, lru_add_drain_work); +/* + * lru_add_drain_wq is used to do lru_add_drain_all() from a WQ_MEM_RECLAIM + * workqueue, aiding in getting memory freed. + */ +static struct workqueue_struct *lru_add_drain_wq; + +static int __init lru_init(void) +{ + lru_add_drain_wq = alloc_workqueue("lru-add-drain", WQ_MEM_RECLAIM, 0); + + if (WARN(!lru_add_drain_wq, + "Failed to create workqueue lru_add_drain_wq")) + return -ENOMEM; + + return 0; +} +early_initcall(lru_init); + void lru_add_drain_all(void) { static DEFINE_MUTEX(lock); @@ -686,7 +704,7 @@ void lru_add_drain_all(void) pagevec_count(&per_cpu(lru_deactivate_pvecs, cpu)) || need_activate_page_drain(cpu)) { INIT_WORK(work, lru_add_drain_per_cpu); - schedule_work_on(cpu, work); + queue_work_on(cpu, lru_add_drain_wq, work); cpumask_set_cpu(cpu, &has_work); } } |