tree 339f0ac4c6d022ba048e109e51580c26ce4d252e
parent af97c7220a0376beed827e72e3bb27731af7109d
author Pekka Enberg <[EMAIL PROTECTED]> Sat, 10 Sep 2005 03:10:16 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Sat, 10 Sep 2005 04:03:43 -0700
[PATCH] update kfree, vfree, and vunmap kerneldoc
This patch clarifies NULL handling of kfree() and vfree(). I addition,
wording of calling context restriction for vfree() and vunmap() are changed
from "may not" to "must not."
Signed-off-by: Pekka Enberg <[EMAIL PROTECTED]>
Acked-by: Manfred Spraul <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
mm/slab.c | 2 ++
mm/vmalloc.c | 7 ++++---
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/mm/slab.c b/mm/slab.c
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -2998,6 +2998,8 @@ EXPORT_SYMBOL(kzalloc);
* kfree - free previously allocated memory
* @objp: pointer returned by kmalloc.
*
+ * If @objp is NULL, no operation is performed.
+ *
* Don't free memory not originally allocated by kmalloc()
* or you will run into trouble.
*/
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -332,9 +332,10 @@ void __vunmap(void *addr, int deallocate
* @addr: memory base address
*
* Free the virtually contiguous memory area starting at @addr, as
- * obtained from vmalloc(), vmalloc_32() or __vmalloc().
+ * obtained from vmalloc(), vmalloc_32() or __vmalloc(). If @addr is
+ * NULL, no operation is performed.
*
- * May not be called in interrupt context.
+ * Must not be called in interrupt context.
*/
void vfree(void *addr)
{
@@ -352,7 +353,7 @@ EXPORT_SYMBOL(vfree);
* Free the virtually contiguous memory area starting at @addr,
* which was created from the page array passed to vmap().
*
- * May not be called in interrupt context.
+ * Must not be called in interrupt context.
*/
void vunmap(void *addr)
{
-
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