This patch introduces a parameters cache_reclaim_weight. It is used to speed up page cache reclaim.
Signed-off-by: Xishi Qiu <[email protected]> --- include/linux/swap.h | 3 +++ kernel/sysctl.c | 9 +++++++++ mm/vmscan.c | 6 ++++++ 3 files changed, 18 insertions(+), 0 deletions(-) diff --git a/include/linux/swap.h b/include/linux/swap.h index bd85493..db912b2 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -361,6 +361,9 @@ extern unsigned long vm_cache_limit_mbytes_min; extern unsigned long vm_cache_limit_mbytes_max; extern unsigned long vm_cache_reclaim_s; extern unsigned long vm_cache_reclaim_s_min; +extern unsigned long vm_cache_reclaim_weight; +extern unsigned long vm_cache_reclaim_weight_min; +extern unsigned long vm_cache_reclaim_weight_max; extern int cache_limit_ratio_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos); extern int cache_limit_mbytes_sysctl_handler(struct ctl_table *table, int write, diff --git a/kernel/sysctl.c b/kernel/sysctl.c index a8a09c4..452e0d3 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1298,6 +1298,15 @@ static struct ctl_table vm_table[] = { .proc_handler = proc_doulongvec_minmax, .extra1 = &vm_cache_reclaim_s_min, }, + { + .procname = "cache_reclaim_weight", + .data = &vm_cache_reclaim_weight, + .maxlen = sizeof(vm_cache_reclaim_weight), + .mode = 0644, + .proc_handler = proc_doulongvec_minmax, + .extra1 = &vm_cache_reclaim_weight_min, + .extra2 = &vm_cache_reclaim_weight_max, + }, #ifdef CONFIG_COMPACTION { .procname = "compact_memory", diff --git a/mm/vmscan.c b/mm/vmscan.c index d7f866e..d179be6 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -139,6 +139,9 @@ unsigned long vm_cache_limit_mbytes_min; unsigned long vm_cache_limit_mbytes_max; unsigned long vm_cache_reclaim_s __read_mostly; unsigned long vm_cache_reclaim_s_min; +unsigned long vm_cache_reclaim_weight __read_mostly; +unsigned long vm_cache_reclaim_weight_min; +unsigned long vm_cache_reclaim_weight_max; static DEFINE_PER_CPU(struct delayed_work, vmscan_work); static LIST_HEAD(shrinker_list); @@ -3410,6 +3413,9 @@ static void shrink_page_cache_init(void) vm_cache_limit_mbytes_max = totalram_pages; vm_cache_reclaim_s = 0; vm_cache_reclaim_s_min = 0; + vm_cache_reclaim_weight = 1; + vm_cache_reclaim_weight_min = 1; + vm_cache_reclaim_weight_max = 100; for_each_online_cpu(cpu) { struct delayed_work *work = &per_cpu(vmscan_work, cpu); -- 1.6.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
