From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Date: Fri, 16 Oct 2020 03:07:39 +0000 (-0700)
Subject: mm/util.c: update the kerneldoc for kstrdup_const()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=295a17302348bc38704ef0f11ca2ce4ce58db2e9;p=linux.git

mm/util.c: update the kerneldoc for kstrdup_const()

Memory allocated with kstrdup_const() must not be passed to regular
krealloc() as it is not aware of the possibility of the chunk residing in
.rodata.  Since there are no potential users of krealloc_const() at the
moment, let's just update the doc to make it explicit.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200817173927.23389-1-brgl@bgdev.pl
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/util.c b/mm/util.c
index 4e21fe7eae278..4ddb6e186dd5c 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -69,7 +69,8 @@ EXPORT_SYMBOL(kstrdup);
  * @s: the string to duplicate
  * @gfp: the GFP mask used in the kmalloc() call when allocating memory
  *
- * Note: Strings allocated by kstrdup_const should be freed by kfree_const.
+ * Note: Strings allocated by kstrdup_const should be freed by kfree_const and
+ * must not be passed to krealloc().
  *
  * Return: source string if it is in .rodata section otherwise
  * fallback to kstrdup.