[merged] mm-hwpoison-fix-fail-isolate-hugetlbfs-page-w-refcount-held.patch removed from -mm tree

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

 



The patch titled
     Subject: mm/hwpoison: fix fail isolate hugetlbfs page w/ refcount held
has been removed from the -mm tree.  Its filename was
     mm-hwpoison-fix-fail-isolate-hugetlbfs-page-w-refcount-held.patch

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

------------------------------------------------------
From: Wanpeng Li <wanpeng.li@xxxxxxxxxxx>
Subject: mm/hwpoison: fix fail isolate hugetlbfs page w/ refcount held

Hugetlbfs pages will get a refcount in get_any_page() or
madvise_hwpoison() if soft offlining through madvise.  The refcount which
is held by the soft offline path should be released if we fail to isolate
hugetlbfs pages.

Fix it by reducing the refcount for both isolation success and failure.

Signed-off-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxx>
Acked-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>	[3.9+]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/memory-failure.c |   13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff -puN mm/memory-failure.c~mm-hwpoison-fix-fail-isolate-hugetlbfs-page-w-refcount-held mm/memory-failure.c
--- a/mm/memory-failure.c~mm-hwpoison-fix-fail-isolate-hugetlbfs-page-w-refcount-held
+++ a/mm/memory-failure.c
@@ -1569,13 +1569,12 @@ static int soft_offline_huge_page(struct
 	unlock_page(hpage);
 
 	ret = isolate_huge_page(hpage, &pagelist);
-	if (ret) {
-		/*
-		 * get_any_page() and isolate_huge_page() takes a refcount each,
-		 * so need to drop one here.
-		 */
-		put_page(hpage);
-	} else {
+	/*
+	 * get_any_page() and isolate_huge_page() takes a refcount each,
+	 * so need to drop one here.
+	 */
+	put_page(hpage);
+	if (!ret) {
 		pr_info("soft offline: %#lx hugepage failed to isolate\n", pfn);
 		return -EBUSY;
 	}
_

Patches currently in -mm which might be from wanpeng.li@xxxxxxxxxxx are

mm-hwpoison-fix-fail-to-split-thp-w-refcount-held.patch
mm-hwpoison-fix-pagehwpoison-test-set-race.patch
mm-hwpoison-introduce-put_hwpoison_page-to-put-refcount-for-memory-error-handling.patch
mm-hwpoison-fix-refcount-of-thp-head-page-in-no-injection-case.patch
mm-hwpoison-replace-most-of-put_page-in-memory-error-handling-by-put_hwpoison_page.patch
mm-hwpoison-replace-most-of-put_page-in-memory-error-handling-by-put_hwpoison_page-fix.patch
mm-hwpoison-introduce-num_poisoned_pages-wrappers.patch
mm-hwpoison-fix-race-between-soft_offline_page-and-unpoison_memory.patch
mm-hwpoison-dont-try-to-unpoison-containment-failed-pages.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 Newbies FAQ]     [Kernel Archive]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [Bugtraq]     [Photo]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]

  Powered by Linux