From: Andrey Ryabinin <aryabinin@virtuozzo.com>
Date: Fri, 26 Oct 2018 22:07:03 +0000 (-0700)
Subject: mm/vmalloc.c: improve vfree() kerneldoc
X-Git-Tag: v4.20-rc1~92^2~60
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3ca4ea3a7a78a243ee9edf71a2736bc8fb26d70f;p=thirdparty%2Fkernel%2Flinux.git

mm/vmalloc.c: improve vfree() kerneldoc

vfree() might sleep if called not in interrupt context.  Explain that in
the comment.

Link: http://lkml.kernel.org/r/20180914130512.10394-2-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
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 a728fc4925573..d00d42d6bf79f 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1577,6 +1577,8 @@ void vfree_atomic(const void *addr)
  *	have CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG, but making the calling
  *	conventions for vfree() arch-depenedent would be a really bad idea)
  *
+ *	May sleep if called *not* from interrupt context.
+ *
  *	NOTE: assumes that the object at @addr has a size >= sizeof(llist_node)
  */
 void vfree(const void *addr)