2013/04/18 22:42, Johannes Weiner wrote:
On Thu, Apr 18, 2013 at 05:36:12PM +0900, Yasuaki Ishimatsu wrote:
@@ -151,6 +162,39 @@ __initcall(ioresources_init);
#endif /* CONFIG_PROC_FS */
+static void free_resource(struct resource *res)
+{
+ if (!res)
+ return;
+
+ if (PageSlab(virt_to_head_page(res))) {
+ spin_lock(&bootmem_resource_lock);
+ res->sibling = bootmem_resource.sibling;
+ bootmem_resource.sibling = res;
+ spin_unlock(&bootmem_resource_lock);
+ } else {
+ kfree(res);
+ }
The branch is mixed up, you are collecting slab objects in
bootmem_resource and kfreeing bootmem.
Ah. I'm wrong. I'll update soon.
Thanks,
Yasuaki Ishimatsu
+static struct resource *get_resource(gfp_t flags)
+{
+ struct resource *res = NULL;
+
+ spin_lock(&bootmem_resource_lock);
+ if (bootmem_resource.sibling) {
+ res = bootmem_resource.sibling;
+ bootmem_resource.sibling = res->sibling;
+ memset(res, 0, sizeof(struct resource));
+ }
+ spin_unlock(&bootmem_resource_lock);
+
+ if (!res)
+ res = kzalloc(sizeof(struct resource), flags);
+
+ return res;
+}
+
/* Return the conflict entry if you can't request it */
static struct resource * __request_resource(struct resource *root, struct
resource *new)
{
--
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