[merged] mm-fix-the-incorrect-hugepages-count.patch removed from -mm tree

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

 



The patch titled
     Subject: mm/hugetlb: fix incorrect hugepages count during mem hotplug
has been removed from the -mm tree.  Its filename was
     mm-fix-the-incorrect-hugepages-count.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: zhong jiang <zhongjiang@xxxxxxxxxx>
Subject: mm/hugetlb: fix incorrect hugepages count during mem hotplug

When memory hotplug operates, free hugepages will be freed if the movable
node is offline.  Therefore, /proc/sys/vm/nr_hugepages will be incorrect.

Fix it by reducing max_huge_pages when the node is offlined.

n-horiguchi@xxxxxxxxxxxxx said:

: dissolve_free_huge_page intends to break a hugepage into buddy, and the
: destination hugepage is supposed to be allocated from the pool of the
: destination node, so the system-wide pool size is reduced.  So adding
: h->max_huge_pages-- makes sense to me.

Link: http://lkml.kernel.org/r/1470624546-902-1-git-send-email-zhongjiang@xxxxxxxxxx
Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Acked-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/hugetlb.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN mm/hugetlb.c~mm-fix-the-incorrect-hugepages-count mm/hugetlb.c
--- a/mm/hugetlb.c~mm-fix-the-incorrect-hugepages-count
+++ a/mm/hugetlb.c
@@ -1448,6 +1448,7 @@ static void dissolve_free_huge_page(stru
 		list_del(&page->lru);
 		h->free_huge_pages--;
 		h->free_huge_pages_node[nid]--;
+		h->max_huge_pages--;
 		update_and_free_page(h, page);
 	}
 	spin_unlock(&hugetlb_lock);
_

Patches currently in -mm which might be from zhongjiang@xxxxxxxxxx are

mm-page_owner-align-with-pageblock_nr-pages.patch
mm-walk-the-zone-in-pageblock_nr_pages-steps.patch

--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Kernel Archive]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]
  Powered by Linux