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| author | David S. Miller <davem@davemloft.net> | 2020-03-13 05:29:30 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-13 06:34:48 +0100 |
| commit | 1d343579312311aa9875b34d5a921f5e2ec69f0a (patch) | |
| tree | 64b636b5557d92f5266187f035dac34862db86d5 /mm/memory_hotplug.c | |
| parent | inet: Use fallthrough; (diff) | |
| parent | Merge tag 'drm-fixes-2020-03-13' of git://anongit.freedesktop.org/drm/drm (diff) | |
| download | linux-1d343579312311aa9875b34d5a921f5e2ec69f0a.tar.xz linux-1d343579312311aa9875b34d5a921f5e2ec69f0a.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor overlapping changes, nothing serious.
Signed-off-by: David S. Miller <davem@davemloft.net>
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 |