We create N number of writeback contexts, N = number of online cpus. The inodes gets distributed across different writeback contexts, enabling parallel writeback. Signed-off-by: Kundan Kumar <kundan.kumar@xxxxxxxxxxx> Signed-off-by: Anuj Gupta <anuj20.g@xxxxxxxxxxx> --- mm/backing-dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/backing-dev.c b/mm/backing-dev.c index d416122e2914..55c07c9be4cd 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -1046,7 +1046,7 @@ int bdi_init(struct backing_dev_info *bdi) bdi->min_ratio = 0; bdi->max_ratio = 100 * BDI_RATIO_SCALE; bdi->max_prop_frac = FPROP_FRAC_BASE; - bdi->nr_wb_ctx = 1; + bdi->nr_wb_ctx = num_online_cpus(); bdi->wb_ctx_arr = kcalloc(bdi->nr_wb_ctx, sizeof(struct bdi_writeback_ctx *), GFP_KERNEL); -- 2.25.1
