diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-27 18:48:33 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-27 18:48:33 +0100 |
| commit | da80d2e516eb858eb5bcca7fa5f5a13ed86930e4 (patch) | |
| tree | 98b4884ed60861b5698ca770449b7484a7c8ae57 /mm/memremap.c | |
| parent | 6859eba4f6fbc515ea05f53b77ec55f49a6dcf0f (diff) | |
| parent | d6d5df1db6e9d7f8f76d2911707f7d5877251b02 (diff) | |
Merge 5.4-rc5 into char-misc-next
We want the binder fix in here as well for testing and to work on top
of.
Also handles a merge issue in binder.c to help linux-next out
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/memremap.c')
| -rw-r--r-- | mm/memremap.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/mm/memremap.c b/mm/memremap.c index 68204912cc0a..03ccbdfeb697 100644 --- a/mm/memremap.c +++ b/mm/memremap.c @@ -103,6 +103,7 @@ static void dev_pagemap_cleanup(struct dev_pagemap *pgmap) void memunmap_pages(struct dev_pagemap *pgmap) { struct resource *res = &pgmap->res; + struct page *first_page; unsigned long pfn; int nid; @@ -111,14 +112,16 @@ void memunmap_pages(struct dev_pagemap *pgmap) put_page(pfn_to_page(pfn)); dev_pagemap_cleanup(pgmap); + /* make sure to access a memmap that was actually initialized */ + first_page = pfn_to_page(pfn_first(pgmap)); + /* pages are dead and unused, undo the arch mapping */ - nid = page_to_nid(pfn_to_page(PHYS_PFN(res->start))); + nid = page_to_nid(first_page); mem_hotplug_begin(); if (pgmap->type == MEMORY_DEVICE_PRIVATE) { - pfn = PHYS_PFN(res->start); - __remove_pages(page_zone(pfn_to_page(pfn)), pfn, - PHYS_PFN(resource_size(res)), NULL); + __remove_pages(page_zone(first_page), PHYS_PFN(res->start), + PHYS_PFN(resource_size(res)), NULL); } else { arch_remove_memory(nid, res->start, resource_size(res), pgmap_altmap(pgmap)); |