From 1c542f38ab8d30d9c852a16d49ac5a15267bbf1f Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Mon, 11 Jun 2018 14:35:55 -0700
Subject: [PATCH] mm: Introduce kvcalloc()
The kv*alloc()-family was missing kvcalloc(). Adding this allows for
2-argument multiplication conversions of kvzalloc(a * b, ...) into
kvcalloc(a, b, ...).
Signed-off-by: Kees Cook <keescook@chromium.org>
---
include/linux/mm.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0e493884e6e1b..a0fbb9ffe3805 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -575,6 +575,11 @@ static inline void *kvmalloc_array(size_t n, size_t size, gfp_t flags)
return kvmalloc(bytes, flags);
}
+static inline void *kvcalloc(size_t n, size_t size, gfp_t flags)
+{
+ return kvmalloc_array(n, size, flags | __GFP_ZERO);
+}
+
extern void kvfree(const void *addr);
static inline atomic_t *compound_mapcount_ptr(struct page *page)
--
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