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| author | Jason Gunthorpe <jgg@mellanox.com> | 2020-03-10 12:49:09 -0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-03-10 12:49:09 -0300 |
| commit | 6f00a54c2cdc82543d5804b0074821b5a40e577f (patch) | |
| tree | a145ce5a9eee817c69633ac64b7635ef5afd4e42 /mm/memory_hotplug.c | |
| parent | 3e3cf2e82cca92ecedba972251a20da4fa4ab1c8 (diff) | |
| parent | 2c523b344dfa65a3738e7039832044aa133c75fb (diff) | |
Merge tag 'v5.6-rc5' into rdma.git for-next
Required due to dependencies in following patches.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 0a54ffac8c68..19389cdc16a5 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -574,7 +574,13 @@ EXPORT_SYMBOL_GPL(restore_online_page_callback); void generic_online_page(struct page *page, unsigned int order) { - kernel_map_pages(page, 1 << order, 1); + /* + * Freeing the page with debug_pagealloc enabled will try to unmap it, + * so we should map it first. This is better than introducing a special + * case in page freeing fast path. + */ + if (debug_pagealloc_enabled_static()) + kernel_map_pages(page, 1 << order, 1); __free_pages_core(page, order); totalram_pages_add(1UL << order); #ifdef CONFIG_HIGHMEM |