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| author | Thomas Gleixner <tglx@linutronix.de> | 2020-11-01 17:54:13 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-11-01 17:54:13 +0100 |
| commit | 17bb415fefedb74d2ff02656cf59e4e3ab92ee20 (patch) | |
| tree | 0ada27d370a1e2bfab1b57df9bb02a1a20371662 /mm/vmscan.c | |
| parent | ceb2465c51195967f11f6507538579816ac67cb8 (diff) | |
| parent | d95bdca75b3fb41bf185efe164e05aed820081a5 (diff) | |
| download | linux-17bb415fefedb74d2ff02656cf59e4e3ab92ee20.tar.bz2 | |
Merge tag 'irqchip-fixes-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- A couple of fixes after the IPI as IRQ patches (Kconfig, bcm2836)
- Two SiFive PLIC fixes (irq_set_affinity, hierarchy handling)
- "unmapped events" handling for the ti-sci-inta controller
- Tidying up for the irq-mst driver (static functions, Kconfig)
- Small cleanup in the Renesas irqpin driver
- STM32 exti can now handle LP timer events
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 99e1796eb833..9727dd8e2581 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2615,6 +2615,14 @@ static void shrink_node_memcgs(pg_data_t *pgdat, struct scan_control *sc) unsigned long reclaimed; unsigned long scanned; + /* + * This loop can become CPU-bound when target memcgs + * aren't eligible for reclaim - either because they + * don't have any reclaimable pages, or because their + * memory is explicitly protected. Avoid soft lockups. + */ + cond_resched(); + mem_cgroup_calculate_protection(target_memcg, memcg); if (mem_cgroup_below_min(memcg)) { |