diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2018-07-14 00:49:56 -0400 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2018-07-20 14:21:53 -0400 |
| commit | 86a66810baa87e5d1c93a51f71d36c7f71fe3113 (patch) | |
| tree | 7bf2be04372c4d89700da9adebc2a6e7f85fe5f2 /mm/memory-failure.c | |
| parent | 73449daf8f0db2697fb9f3f60b3a6d5c76a3c5fc (diff) | |
mm, madvise_inject_error: Disable MADV_SOFT_OFFLINE for ZONE_DEVICE pages
Given that dax / device-mapped pages are never subject to page
allocations remove them from consideration by the soft-offline
mechanism.
Reported-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 9d142b9b86dc..988f977db3d2 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c | |||
| @@ -1751,6 +1751,14 @@ int soft_offline_page(struct page *page, int flags) | |||
| 1751 | int ret; | 1751 | int ret; |
| 1752 | unsigned long pfn = page_to_pfn(page); | 1752 | unsigned long pfn = page_to_pfn(page); |
| 1753 | 1753 | ||
| 1754 | if (is_zone_device_page(page)) { | ||
| 1755 | pr_debug_ratelimited("soft_offline: %#lx page is device page\n", | ||
| 1756 | pfn); | ||
| 1757 | if (flags & MF_COUNT_INCREASED) | ||
| 1758 | put_page(page); | ||
| 1759 | return -EIO; | ||
| 1760 | } | ||
| 1761 | |||
| 1754 | if (PageHWPoison(page)) { | 1762 | if (PageHWPoison(page)) { |
| 1755 | pr_info("soft offline: %#lx page already poisoned\n", pfn); | 1763 | pr_info("soft offline: %#lx page already poisoned\n", pfn); |
| 1756 | if (flags & MF_COUNT_INCREASED) | 1764 | if (flags & MF_COUNT_INCREASED) |