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authorBartosz Golaszewski <bgolaszewski@baylibre.com>2020-10-16 06:07:39 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-16 21:11:17 +0300
commit295a17302348bc38704ef0f11ca2ce4ce58db2e9 (patch)
treedfbb18edaa5be3a2400779c804d9c41903e8aa2b /mm/util.c
parent406100762ae9ae5b7709c737ada3089160a0f77a (diff)
downloadlinux-295a17302348bc38704ef0f11ca2ce4ce58db2e9.tar.xz
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>
Diffstat (limited to 'mm/util.c')
-rw-r--r--mm/util.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/util.c b/mm/util.c
index 4e21fe7eae27..4ddb6e186dd5 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.