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authorLinus Torvalds <torvalds@linux-foundation.org>2016-02-19 13:36:00 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-02-19 13:36:00 -0800
commit87d9ac712b727705dc07e05e851e84387397d696 (patch)
treefabd1de9442136eadf6dda41f184f5000272534d /arch
parent23300f657594656e7ebac3130b43460ebc4381cc (diff)
parent52b4b950b50740bff507a62907e86710743c22e7 (diff)
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Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton: "10 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm: slab: free kmem_cache_node after destroy sysfs file ipc/shm: handle removed segments gracefully in shm_mmap() MAINTAINERS: update Kselftest Framework mailing list devm_memremap_release(): fix memremap'd addr handling mm/hugetlb.c: fix incorrect proc nr_hugepages value mm, x86: fix pte_page() crash in gup_pte_range() fsnotify: turn fsnotify reaper thread into a workqueue job Revert "fsnotify: destroy marks with call_srcu instead of dedicated thread" mm: fix regression in remap_file_pages() emulation thp, dax: do not try to withdraw pgtable from non-anon VMA
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/mm/gup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
index 6d5eb5900372..d8a798d8bf50 100644
--- a/arch/x86/mm/gup.c
+++ b/arch/x86/mm/gup.c
@@ -102,7 +102,6 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr,
return 0;
}
- page = pte_page(pte);
if (pte_devmap(pte)) {
pgmap = get_dev_pagemap(pte_pfn(pte), pgmap);
if (unlikely(!pgmap)) {
@@ -115,6 +114,7 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr,
return 0;
}
VM_BUG_ON(!pfn_valid(pte_pfn(pte)));
+ page = pte_page(pte);
get_page(page);
put_dev_pagemap(pgmap);
SetPageReferenced(page);