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authorAndrew Morton <akpm@linux-foundation.org>2018-09-04 15:45:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-09-04 16:45:02 -0700
commit04b8e946075d4582093e84f54dc1a004b227794d (patch)
treeccde0c510c818d4ad216795d53070f4e4dab603b /mm
parent7ab660f8baecfe26c1c267fa8e64d2073feae2bb (diff)
downloadlinux-stericsson-04b8e946075d4582093e84f54dc1a004b227794d.tar.gz
mm/util.c: improve kvfree() kerneldoc
Scooped from an email from Matthew. Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/util.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/mm/util.c b/mm/util.c
index d2890a407332..9e3ebd2ef65f 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -435,11 +435,14 @@ void *kvmalloc_node(size_t size, gfp_t flags, int node)
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)
{