From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm/util.c: improve kvfree() kerneldoc
Scooped from an email from Matthew.
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/util.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
--- a/mm/util.c~mm-utilc-improve-kvfree-kerneldoc
+++ a/mm/util.c
@@ -435,11 +435,14 @@ void *kvmalloc_node(size_t size, gfp_t f
EXPORT_SYMBOL(kvmalloc_node);
/**
- * kvfree - free memory allocated with kvmalloc
- * @addr: pointer returned by kvmalloc
+ * kvfree() - Free memory.
+ * @addr: Pointer to allocated memory.
*
- * If the memory is allocated from vmalloc area it is freed with vfree().
- * Otherwise kfree() is used.
+ * kvfree frees memory allocated by any of vmalloc(), kmalloc() or kvmalloc().
+ * It is slightly more efficient to use kfree() or vfree() if you are certain
+ * that you know which one to use.
+ *
+ * Context: Any context except NMI.
*/
void kvfree(const void *addr)
{
_
