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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-01 23:54:56 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-01 23:54:56 -0700
commitd3b5d35290d729a2518af00feca867385a1b08fa (patch)
tree7b56c0863d59bc57f7c7dcf5d5665c56b05f1d1b /mm/swap.c
parentaa2a4b6569d5b10491b606a86e574dff3852597a (diff)
parent71389703839ebe9cb426c72d5f0bd549592e583c (diff)
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Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Ingo Molnar: "The main x86 MM changes in this cycle were: - continued native kernel PCID support preparation patches to the TLB flushing code (Andy Lutomirski) - various fixes related to 32-bit compat syscall returning address over 4Gb in applications, launched from 64-bit binaries - motivated by C/R frameworks such as Virtuozzo. (Dmitry Safonov) - continued Intel 5-level paging enablement: in particular the conversion of x86 GUP to the generic GUP code. (Kirill A. Shutemov) - x86/mpx ABI corner case fixes/enhancements (Joerg Roedel) - ... plus misc updates, fixes and cleanups" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (62 commits) mm, zone_device: Replace {get, put}_zone_device_page() with a single reference to fix pmem crash x86/mm: Fix flush_tlb_page() on Xen x86/mm: Make flush_tlb_mm_range() more predictable x86/mm: Remove flush_tlb() and flush_tlb_current_task() x86/vm86/32: Switch to flush_tlb_mm_range() in mark_screen_rdonly() x86/mm/64: Fix crash in remove_pagetable() Revert "x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation" x86/boot/e820: Remove a redundant self assignment x86/mm: Fix dump pagetables for 4 levels of page tables x86/mpx, selftests: Only check bounds-vs-shadow when we keep shadow x86/mpx: Correctly report do_mpx_bt_fault() failures to user-space Revert "x86/mm/numa: Remove numa_nodemask_from_meminfo()" x86/espfix: Add support for 5-level paging x86/kasan: Extend KASAN to support 5-level paging x86/mm: Add basic defines/helpers for CONFIG_X86_5LEVEL=y x86/paravirt: Add 5-level support to the paravirt code x86/mm: Define virtual memory map for 5-level paging x86/asm: Remove __VIRTUAL_MASK_SHIFT==47 assert x86/boot: Detect 5-level paging support x86/mm/numa: Remove numa_nodemask_from_meminfo() ...
Diffstat (limited to 'mm/swap.c')
-rw-r--r--mm/swap.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/swap.c b/mm/swap.c
index 5dabf444d724..d8d9ee9e311a 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -97,6 +97,16 @@ static void __put_compound_page(struct page *page)
void __put_page(struct page *page)
{
+ if (is_zone_device_page(page)) {
+ put_dev_pagemap(page->pgmap);
+
+ /*
+ * The page belongs to the device that created pgmap. Do
+ * not return it to page allocator.
+ */
+ return;
+ }
+
if (unlikely(PageCompound(page)))
__put_compound_page(page);
else