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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2012-07-31 16:42:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-31 18:42:40 -0700
commit189ebff2894a9d0f4e250dd1e154d282ef0a6779 (patch)
treee498573190660e2cfe6f64ff3fcc8cf3d44a58da /mm/memory-failure.c
parent24669e58477e2752c1fbca9c1c988e9dd0d79d15 (diff)
downloadlinux-189ebff2894a9d0f4e250dd1e154d282ef0a6779.tar.gz
hugetlb: simplify migrate_huge_page()
Since we migrate only one hugepage, don't use linked list for passing the page around. Directly pass the page that need to be migrated as argument. This also removes the usage of page->lru in the migrate path. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: David Rientjes <rientjes@google.com> Cc: Hillf Danton <dhillf@gmail.com> Reviewed-by: Michal Hocko <mhocko@suse.cz> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory-failure.c')
-rw-r--r--mm/memory-failure.c15
1 files changed, 4 insertions, 11 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 6de0d613bbe..b04ff2d6f73 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1416,7 +1416,6 @@ static int soft_offline_huge_page(struct page *page, int flags)
int ret;
unsigned long pfn = page_to_pfn(page);
struct page *hpage = compound_head(page);
- LIST_HEAD(pagelist);
ret = get_any_page(page, pfn, flags);
if (ret < 0)
@@ -1431,24 +1430,18 @@ static int soft_offline_huge_page(struct page *page, int flags)
}
/* Keep page count to indicate a given hugepage is isolated. */
-
- list_add(&hpage->lru, &pagelist);
- ret = migrate_huge_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL, false,
+ ret = migrate_huge_page(hpage, new_page, MPOL_MF_MOVE_ALL, false,
MIGRATE_SYNC);
+ put_page(hpage);
if (ret) {
- struct page *page1, *page2;
- list_for_each_entry_safe(page1, page2, &pagelist, lru)
- put_page(page1);
-
pr_info("soft offline: %#lx: migration failed %d, type %lx\n",
pfn, ret, page->flags);
- if (ret > 0)
- ret = -EIO;
return ret;
}
done:
if (!PageHWPoison(hpage))
- atomic_long_add(1 << compound_trans_order(hpage), &mce_bad_pages);
+ atomic_long_add(1 << compound_trans_order(hpage),
+ &mce_bad_pages);
set_page_hwpoison_huge_page(hpage);
dequeue_hwpoisoned_huge_page(hpage);
/* keep elevated page count for bad page */