The patch titled
Subject: mem-hotplug: use GFP_HIGHUSER_MOVABLE in, alloc_migrate_target()
has been added to the -mm tree. Its filename is
mem-hotplug-use-gfp_highuser_movable-in-alloc_migrate_target.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mem-hotplug-use-gfp_highuser_movable-in-alloc_migrate_target.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mem-hotplug-use-gfp_highuser_movable-in-alloc_migrate_target.patch
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------------------------------------------------------
From: Xishi Qiu <qiuxishi@xxxxxxxxxx>
Subject: mem-hotplug: use GFP_HIGHUSER_MOVABLE in, alloc_migrate_target()
alloc_migrate_target() is called from migrate_pages(), and the page is
always from user space, so we can add __GFP_HIGHMEM directly.
Link: http://lkml.kernel.org/r/57884EAA.9030603@xxxxxxxxxx
Signed-off-by: Xishi Qiu <qiuxishi@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_isolation.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff -puN mm/page_isolation.c~mem-hotplug-use-gfp_highuser_movable-in-alloc_migrate_target mm/page_isolation.c
--- a/mm/page_isolation.c~mem-hotplug-use-gfp_highuser_movable-in-alloc_migrate_target
+++ a/mm/page_isolation.c
@@ -283,8 +283,6 @@ int test_pages_isolated(unsigned long st
struct page *alloc_migrate_target(struct page *page, unsigned long private,
int **resultp)
{
- gfp_t gfp_mask = GFP_USER | __GFP_MOVABLE;
-
/*
* TODO: allocate a destination hugepage from a nearest neighbor node,
* accordance with memory policy of the user process if possible. For
@@ -294,9 +292,6 @@ struct page *alloc_migrate_target(struct
return alloc_huge_page_node(page_hstate(compound_head(page)),
next_node_in(page_to_nid(page),
node_online_map));
-
- if (PageHighMem(page))
- gfp_mask |= __GFP_HIGHMEM;
-
- return alloc_page(gfp_mask);
+ else
+ return alloc_page(GFP_HIGHUSER_MOVABLE);
}
_
Patches currently in -mm which might be from qiuxishi@xxxxxxxxxx are
mem-hotplug-use-gfp_highuser_movable-in-alloc_migrate_target.patch
mem-hotplug-use-different-mempolicy-in-alloc_migrate_target.patch
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