Perform the same debug checks in alloc_pages_node() as are done in
alloc_pages_exact_node() and __alloc_pages_node() by making the latter
function the inner core of the former ones.
Change the !node_online(nid) check from VM_BUG_ON to VM_WARN_ON since it's not
fatal and this patch may expose some buggy callers.
Signed-off-by: Vlastimil Babka <vba...@suse.cz>
---
include/linux/gfp.h | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index c50848e..54c3ee7 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -307,7 +307,8 @@ __alloc_pages(gfp_t gfp_mask, unsigned int order,
static inline struct page *
__alloc_pages_node(int nid, gfp_t gfp_mask, unsigned int order)
{
- VM_BUG_ON(nid < 0 || nid >= MAX_NUMNODES || !node_online(nid));
+ VM_BUG_ON(nid < 0 || nid >= MAX_NUMNODES);
+ VM_WARN_ON(!node_online(nid));
return __alloc_pages(gfp_mask, order, node_zonelist(nid, gfp_mask));
}
@@ -319,11 +320,11 @@ __alloc_pages_node(int nid, gfp_t gfp_mask, unsigned int
order)
static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask,
unsigned int order)
{
- /* Unknown node is current node */
- if (nid < 0)
+ /* Unknown node is current (or closest) node */
+ if (nid == NUMA_NO_NODE)
nid = numa_node_id();
- return __alloc_pages(gfp_mask, order, node_zonelist(nid, gfp_mask));
+ return __alloc_pages_node(nid, gfp_mask, order);
}
/*
@@ -334,11 +335,7 @@ static inline struct page *alloc_pages_node(int nid, gfp_t
gfp_mask,
static inline struct page *alloc_pages_exact_node(int nid, gfp_t gfp_mask,
unsigned int order)
{
- VM_BUG_ON(nid < 0 || nid >= MAX_NUMNODES || !node_online(nid));
-
- gfp_mask |= __GFP_THISNODE;
-
- return __alloc_pages(gfp_mask, order, node_zonelist(nid, gfp_mask));
+ return __alloc_pages_node(nid, gfp_mask | __GFP_THISNODE, order);
}
#ifdef CONFIG_NUMA
--
2.4.6
--
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