[PATCH v2 4/7] mm: Export round_hint_to_min()

Kirill Tkhai
2019-05-20T14:00:23Z

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
---
include/linux/mman.h | 14 ++++++++++++++
mm/mmap.c | 13 -------------
2 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/include/linux/mman.h b/include/linux/mman.h
index 4b08e9c9c538..69feb3144c12 100644
--- a/include/linux/mman.h
+++ b/include/linux/mman.h
@@ -4,6 +4,7 @@

#include <linux/mm.h>
#include <linux/percpu_counter.h>
+#include <linux/security.h>

#include <linux/atomic.h>
#include <uapi/linux/mman.h>
@@ -73,6 +74,19 @@ static inline void vm_unacct_memory(long pages)
vm_acct_memory(-pages);
}

+/*
+ * If a hint addr is less than mmap_min_addr change hint to be as
+ * low as possible but still greater than mmap_min_addr
+ */
+static inline unsigned long round_hint_to_min(unsigned long hint)
+{
+ hint &= PAGE_MASK;
+ if (((void *)hint != NULL) &&
+ (hint < mmap_min_addr))
+ return PAGE_ALIGN(mmap_min_addr);
+ return hint;
+}
+
/*
* Allow architectures to handle additional protection bits
*/
diff --git a/mm/mmap.c b/mm/mmap.c
index 99778e724ad1..e4ced5366643 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1318,19 +1318,6 @@ struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *vma)
return NULL;
}

-/*
- * If a hint addr is less than mmap_min_addr change hint to be as
- * low as possible but still greater than mmap_min_addr
- */
-static inline unsigned long round_hint_to_min(unsigned long hint)
-{
- hint &= PAGE_MASK;
- if (((void *)hint != NULL) &&
- (hint < mmap_min_addr))
- return PAGE_ALIGN(mmap_min_addr);
- return hint;
-}
-
static inline int mlock_future_check(struct mm_struct *mm,
unsigned long flags,
unsigned long len)