This patch introduces a parameters cache_reclaim_s. It is used to reclaim page cache in circles.
Signed-off-by: Xishi Qiu <[email protected]> --- include/linux/swap.h | 2 ++ kernel/sysctl.c | 8 ++++++++ mm/vmscan.c | 4 ++++ 3 files changed, 14 insertions(+), 0 deletions(-) diff --git a/include/linux/swap.h b/include/linux/swap.h index dcbe1a3..bd85493 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -359,6 +359,8 @@ extern unsigned long vm_cache_limit_ratio_max; extern unsigned long vm_cache_limit_mbytes; 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 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 9bb6f38..a8a09c4 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1290,6 +1290,14 @@ static struct ctl_table vm_table[] = { .extra1 = &vm_cache_limit_mbytes_min, .extra2 = &vm_cache_limit_mbytes_max, }, + { + .procname = "cache_reclaim_s", + .data = &vm_cache_reclaim_s, + .maxlen = sizeof(vm_cache_reclaim_s), + .mode = 0644, + .proc_handler = proc_doulongvec_minmax, + .extra1 = &vm_cache_reclaim_s_min, + }, #ifdef CONFIG_COMPACTION { .procname = "compact_memory", diff --git a/mm/vmscan.c b/mm/vmscan.c index 707d3e3..61cedfc 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -137,6 +137,8 @@ unsigned long vm_cache_limit_ratio_max; unsigned long vm_cache_limit_mbytes __read_mostly; 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; static LIST_HEAD(shrinker_list); static DECLARE_RWSEM(shrinker_rwsem); @@ -3390,6 +3392,8 @@ static void shrink_page_cache_init(void) vm_cache_limit_mbytes = 0; vm_cache_limit_mbytes_min = 0; vm_cache_limit_mbytes_max = totalram_pages; + vm_cache_reclaim_s = 0; + vm_cache_reclaim_s_min = 0; } static unsigned long __shrink_page_cache(gfp_t mask) -- 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/
