From: Geliang Tang <geliangtang@gmail.com>
Date: Wed, 22 Feb 2017 23:41:54 +0000 (-0800)
Subject: mm/vmalloc.c: use rb_entry_safe
X-Git-Tag: MMI-PSA29.97-13-9~6134^2~99
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4583e77310a2edf39ee91099fba3cd153a22a77b;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

mm/vmalloc.c: use rb_entry_safe

Use rb_entry_safe() instead of open-coding it.

Link: http://lkml.kernel.org/r/81bb9820e5b9e4a1c596b3e76f88abf8c4a76cb0.1482221947.git.geliangtang@gmail.com
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 3ca82d44edd3..5f5b09e9dccd 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2309,7 +2309,7 @@ EXPORT_SYMBOL_GPL(free_vm_area);
 #ifdef CONFIG_SMP
 static struct vmap_area *node_to_va(struct rb_node *n)
 {
-	return n ? rb_entry(n, struct vmap_area, rb_node) : NULL;
+	return rb_entry_safe(n, struct vmap_area, rb_node);
 }
 
 /**