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| author | Mike Marshall <hubcap@omnibond.com> | 2016-01-15 14:22:14 -0500 |
|---|---|---|
| committer | Mike Marshall <hubcap@omnibond.com> | 2016-01-15 14:22:14 -0500 |
| commit | 5e1f3938f9e4ef539031d639879cb1cea870fab5 (patch) | |
| tree | b262a7c002b05b7bc800a106d6ca6777dabe15bf /fs/dax.c | |
| parent | 1808f8cc6cb2842c53147eccfd5e88044d0d22a6 (diff) | |
| parent | afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc (diff) | |
| download | linux-5e1f3938f9e4ef539031d639879cb1cea870fab5.tar.bz2 | |
Orangefs: merge with V4.4
Merge tag 'v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into current
Linux 4.4
Diffstat (limited to 'fs/dax.c')
| -rw-r--r-- | fs/dax.c | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -541,6 +541,10 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address, unsigned long pfn; int result = 0; + /* dax pmd mappings are broken wrt gup and fork */ + if (!IS_ENABLED(CONFIG_FS_DAX_PMD)) + return VM_FAULT_FALLBACK; + /* Fall back to PTEs if we're going to COW */ if (write && !(vma->vm_flags & VM_SHARED)) return VM_FAULT_FALLBACK; |