From: willy@parisc-linux.org (Matthew Wilcox)
What does it mean to release a resource with children? Should the children
become children of the released resource's parent? Should they be released
too? Should we fail the release?
I bet we have no callers who expect this right now, but with
insert_resource() we may get some. At the point where someone hits this
BUG we can figure out what semantics we want.
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/kernel/resource.c | 2 ++
1 files changed, 2 insertions(+)
diff -puN kernel/resource.c~releasing-resources-with-children kernel/resource.c
--- 25/kernel/resource.c~releasing-resources-with-children 2005-04-02 00:21:52.000000000 -0800
+++ 25-akpm/kernel/resource.c 2005-04-02 00:22:22.000000000 -0800
@@ -181,6 +181,8 @@ static int __release_resource(struct res
{
struct resource *tmp, **p;
+ WARN_ON(old->child);
+
p = &old->parent->child;
for (;;) {
tmp = *p;
_