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-rw-r--r--include/linux/hugetlb.h1
-rw-r--r--kernel/sysctl.c2
-rw-r--r--mm/hugetlb.c10
3 files changed, 12 insertions, 1 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 30d606afcaf..7ca198b379a 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -17,6 +17,7 @@ static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
}
int hugetlb_sysctl_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *);
+int hugetlb_overcommit_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *);
int hugetlb_treat_movable_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *);
int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *);
int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, struct page **, struct vm_area_struct **, unsigned long *, int *, int, int);
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8c98d8147d8..9dadc9d88a0 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -982,7 +982,7 @@ static struct ctl_table vm_table[] = {
.data = &nr_overcommit_huge_pages,
.maxlen = sizeof(nr_overcommit_huge_pages),
.mode = 0644,
- .proc_handler = &proc_doulongvec_minmax,
+ .proc_handler = &hugetlb_overcommit_handler,
},
#endif
{
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 1a5642074e3..d9a38031246 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -605,6 +605,16 @@ int hugetlb_treat_movable_handler(struct ctl_table *table, int write,
return 0;
}
+int hugetlb_overcommit_handler(struct ctl_table *table, int write,
+ struct file *file, void __user *buffer,
+ size_t *length, loff_t *ppos)
+{
+ spin_lock(&hugetlb_lock);
+ proc_doulongvec_minmax(table, write, file, buffer, length, ppos);
+ spin_unlock(&hugetlb_lock);
+ return 0;
+}
+
#endif /* CONFIG_SYSCTL */
int hugetlb_report_meminfo(char *buf)