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| author | David Sterba <dsterba@suse.com> | 2016-02-26 15:38:32 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-02-26 15:38:32 +0100 |
| commit | 675d276b322b45e7bf7c616a2847bdc425745b99 (patch) | |
| tree | c61e7108034bf1230024880ec8ae46a9617077c2 /mm/mprotect.c | |
| parent | e9ddd77a31e6ba2867b9c33547f6f079d55f7a72 (diff) | |
| parent | 73beece9ca07c003e0e4f4825b12be167334d4ad (diff) | |
| download | blackbird-op-linux-675d276b322b45e7bf7c616a2847bdc425745b99.tar.gz blackbird-op-linux-675d276b322b45e7bf7c616a2847bdc425745b99.zip | |
Merge branch 'foreign/liubo/replace-lockup' into for-chris-4.6
Diffstat (limited to 'mm/mprotect.c')
| -rw-r--r-- | mm/mprotect.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c index 8eb7bb40dc40..f7cb3d4d9c2e 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -160,9 +160,11 @@ static inline unsigned long change_pmd_range(struct vm_area_struct *vma, } if (pmd_trans_huge(*pmd) || pmd_devmap(*pmd)) { - if (next - addr != HPAGE_PMD_SIZE) + if (next - addr != HPAGE_PMD_SIZE) { split_huge_pmd(vma, pmd, addr); - else { + if (pmd_none(*pmd)) + continue; + } else { int nr_ptes = change_huge_pmd(vma, pmd, addr, newprot, prot_numa); |
