The patch titled
Subject: mm/hugetlb: fix incorrect hugepages count during mem hotplug
has been added to the -mm tree. Its filename is
mm-fix-the-incorrect-hugepages-count.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-fix-the-incorrect-hugepages-count.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-fix-the-incorrect-hugepages-count.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
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.
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>
Cc: 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-fix-the-incorrect-hugepages-count.patch
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
