The patch titled
Subject: mm/dmapool.c: revert "make dma pool to use kmalloc_node"
has been added to the -mm tree. Its filename is
dma-revert-make-dma-pool-to-use-kmalloc_node.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/dma-revert-make-dma-pool-to-use-kmalloc_node.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/dma-revert-make-dma-pool-to-use-kmalloc_node.patch
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From: "=?UTF-8?q?Christian=20K=C3=B6nig?=" <ckoenig.leichtzumerken@xxxxxxxxx>
Subject: mm/dmapool.c: revert "make dma pool to use kmalloc_node"
This reverts commit 2618c60b8b5836 ("dma: make dma pool to use
kmalloc_node").
While working myself into the dmapool code I've found this little odd
kmalloc_node().
What basically happens here is that we allocate the housekeeping structure
on the numa node where the device is attached to. Since the device is
never doing DMA to or from that memory this doesn't seem to make sense at
all.
So while this doesn't seem to cause much harm it's probably cleaner to
revert the change for consistency.
Link: https://lkml.kernel.org/r/20211221110724.97664-1-christian.koenig@xxxxxxx
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Cc: Yinghai Lu <yinghai.lu@xxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Cc: Christoph Lameter <clameter@xxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/dmapool.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/dmapool.c~dma-revert-make-dma-pool-to-use-kmalloc_node
+++ a/mm/dmapool.c
@@ -152,7 +152,7 @@ struct dma_pool *dma_pool_create(const c
else if ((boundary < size) || (boundary & (boundary - 1)))
return NULL;
- retval = kmalloc_node(sizeof(*retval), GFP_KERNEL, dev_to_node(dev));
+ retval = kmalloc(sizeof(*retval), GFP_KERNEL);
if (!retval)
return retval;
_
Patches currently in -mm which might be from ckoenig.leichtzumerken@xxxxxxxxx are
dma-revert-make-dma-pool-to-use-kmalloc_node.patch
