[PATCH 2/3] slub, hotplug: ignore unrelated node's hot-adding and hot-removing

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



SLUB only fucus on the nodes which has normal memory, so ignore the other
node's hot-adding and hot-removing.

Aka: if some memroy of a node(which has no onlined memory) is online,
but this new memory onlined is not normal memory(HIGH memory example),
we should not allocate kmem_cache_node for SLUB.

And if the last normal memory is offlined, but the node still has memroy,
we should remove kmem_cache_node for that node.(current code delay it when
all of the memory is offlined)

so we only do something when marg->status_change_nid_normal > 0.
marg->status_change_nid is not suitable here.

Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
---
 mm/slub.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 2fdd96f..2d78639 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3577,7 +3577,7 @@ static void slab_mem_offline_callback(void *arg)
 	struct memory_notify *marg = arg;
 	int offline_node;
 
-	offline_node = marg->status_change_nid;
+	offline_node = marg->status_change_nid_normal;
 
 	/*
 	 * If the node still has available memory. we need kmem_cache_node
@@ -3610,7 +3610,7 @@ static int slab_mem_going_online_callback(void *arg)
 	struct kmem_cache_node *n;
 	struct kmem_cache *s;
 	struct memory_notify *marg = arg;
-	int nid = marg->status_change_nid;
+	int nid = marg->status_change_nid_normal;
 	int ret = 0;
 
 	/*
-- 
1.7.4.4

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>


[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux]     [Linux OMAP]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]