diff options
| author | H. Peter Anvin <hpa@linux.intel.com> | 2014-05-21 17:36:33 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-05-21 17:36:33 -0700 |
| commit | 03c1b4e8e560455a2634a76998883a22f1a01207 (patch) | |
| tree | 30ca1237d094d66df1dc1533f7bf39b3877b5932 /mm/mremap.c | |
| parent | ac49b9a9f26b6c42585f87857722085ef4b19c13 (diff) | |
| parent | e6ab9a20e73e790d47e6aa231fcf66f27b6ce3d4 (diff) | |
| download | linux-03c1b4e8e560455a2634a76998883a22f1a01207.tar.bz2 | |
Merge remote-tracking branch 'origin/x86/espfix' into x86/vdso
Merge x86/espfix into x86/vdso, due to changes in the vdso setup code
that otherwise cause conflicts.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'mm/mremap.c')
| -rw-r--r-- | mm/mremap.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/mm/mremap.c b/mm/mremap.c index 0843feb66f3d..05f1180e9f21 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -194,10 +194,17 @@ unsigned long move_page_tables(struct vm_area_struct *vma, break; if (pmd_trans_huge(*old_pmd)) { int err = 0; - if (extent == HPAGE_PMD_SIZE) + if (extent == HPAGE_PMD_SIZE) { + VM_BUG_ON(vma->vm_file || !vma->anon_vma); + /* See comment in move_ptes() */ + if (need_rmap_locks) + anon_vma_lock_write(vma->anon_vma); err = move_huge_pmd(vma, new_vma, old_addr, new_addr, old_end, old_pmd, new_pmd); + if (need_rmap_locks) + anon_vma_unlock_write(vma->anon_vma); + } if (err > 0) { need_flush = true; continue; |