There are currently three 'nr_hugepages' used to export the number of huge
pages:
1. /proc/sys/vm/nr_hugepages
2. /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
3. /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
For consistency, all three 'nr_hugepages' should return the total number
of huge pages. When written, the number of persistent huge pages will be
adjusted to the specified value.
But, /proc/sys/vm/nr_hugepages returns the number of persistent huge
pages.
Signed-off-by: Xueshi Hu <xueshi.hu@xxxxxxxxxx>
---
mm/hugetlb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index e327a5a7602c..76af189053f0 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -4606,7 +4606,7 @@ static int hugetlb_sysctl_handler_common(bool obey_mempolicy,
void *buffer, size_t *length, loff_t *ppos)
{
struct hstate *h = &default_hstate;
- unsigned long tmp = h->max_huge_pages;
+ unsigned long tmp = h->nr_huge_pages;
int ret;
if (!hugepages_supported())
--
2.40.1
