From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 7 Jan 2018 18:00:27 +0000 (-0500)
Subject: memdup_user(): switch to GFP_USER
X-Git-Tag: v4.16-rc1~145^2~12
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=6c2c97a24f096e3239bc54029b808c6bcba4f358;p=uclinux-h8%2Flinux.git

memdup_user(): switch to GFP_USER

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/mm/util.c b/mm/util.c
index 34e57fae959d..4b93ffa6df96 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -156,12 +156,7 @@ void *memdup_user(const void __user *src, size_t len)
 {
 	void *p;
 
-	/*
-	 * Always use GFP_KERNEL, since copy_from_user() can sleep and
-	 * cause pagefault, which makes it pointless to use GFP_NOFS
-	 * or GFP_ATOMIC.
-	 */
-	p = kmalloc_track_caller(len, GFP_KERNEL);
+	p = kmalloc_track_caller(len, GFP_USER);
 	if (!p)
 		return ERR_PTR(-ENOMEM);