The patch titled
memory hotplug: __GFP_NOWARN is better for __kmalloc_section_memmap()
has been removed from the -mm tree. Its filename was
memory-hotplug-__gfp_nowarn-is-better-for-__kmalloc_section_memmap.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: memory hotplug: __GFP_NOWARN is better for __kmalloc_section_memmap()
From: Yasunori Goto <y-goto@xxxxxxxxxxxxxx>
Add __GFP_NOWARN flag to calling of __alloc_pages() in
__kmalloc_section_memmap(). It can reduce noisy failure message.
In ia64, section size is 1 GB, this means that order 8 pages are necessary
for each section's memmap. It is often very hard requirement under heavy
memory pressure as you know. So, __alloc_pages() gives up allocation and
shows many noisy stack traces which means no page for each sections.
(Current my environment shows 32 times of stack trace....)
But, __kmalloc_section_memmap() calls vmalloc() after failure of it, and it
can succeed allocation of memmap. So, its stack trace warning becomes just
noisy. I suppose it shouldn't be shown.
Signed-off-by: Yasunori Goto <y-goto@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/sparse.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/sparse.c~memory-hotplug-__gfp_nowarn-is-better-for-__kmalloc_section_memmap mm/sparse.c
--- a/mm/sparse.c~memory-hotplug-__gfp_nowarn-is-better-for-__kmalloc_section_memmap
+++ a/mm/sparse.c
@@ -211,7 +211,7 @@ static struct page *__kmalloc_section_me
struct page *page, *ret;
unsigned long memmap_size = sizeof(struct page) * nr_pages;
- page = alloc_pages(GFP_KERNEL, get_order(memmap_size));
+ page = alloc_pages(GFP_KERNEL|__GFP_NOWARN, get_order(memmap_size));
if (page)
goto got_map_page;
_
Patches currently in -mm which might be from y-goto@xxxxxxxxxxxxxx are
origin.patch
-
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