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| author | Oliver O'Halloran <oohall@gmail.com> | 2017-05-08 15:59:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-08 17:15:15 -0700 |
| commit | c14a6eb44d8a59337433961d181ca953fb20d083 (patch) | |
| tree | 605da7ff4deefe55c143b79af4cf7ec1ada703f1 /mm | |
| parent | bfe1c566453a0979c0b3cd3728d0de962272f034 (diff) | |
| download | op-kernel-dev-c14a6eb44d8a59337433961d181ca953fb20d083.zip op-kernel-dev-c14a6eb44d8a59337433961d181ca953fb20d083.tar.gz | |
mm/huge_memory.c: use zap_deposited_table() more
Depending on the flags of the PMD being zapped there may or may not be a
deposited pgtable to be freed. In two of the three cases this is open
coded while the third uses the zap_deposited_table() helper. This patch
converts the others to use the helper to clean things up a bit.
Link: http://lkml.kernel.org/r/20170411174233.21902-2-oohall@gmail.com
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: linux-nvdimm@ml01.01.org
Cc: Oliver O'Halloran <oohall@gmail.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/huge_memory.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index b787c4c..aa01dd4 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1615,8 +1615,7 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, if (is_huge_zero_pmd(orig_pmd)) tlb_remove_page_size(tlb, pmd_page(orig_pmd), HPAGE_PMD_SIZE); } else if (is_huge_zero_pmd(orig_pmd)) { - pte_free(tlb->mm, pgtable_trans_huge_withdraw(tlb->mm, pmd)); - atomic_long_dec(&tlb->mm->nr_ptes); + zap_deposited_table(tlb->mm, pmd); spin_unlock(ptl); tlb_remove_page_size(tlb, pmd_page(orig_pmd), HPAGE_PMD_SIZE); } else { @@ -1625,10 +1624,7 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, VM_BUG_ON_PAGE(page_mapcount(page) < 0, page); VM_BUG_ON_PAGE(!PageHead(page), page); if (PageAnon(page)) { - pgtable_t pgtable; - pgtable = pgtable_trans_huge_withdraw(tlb->mm, pmd); - pte_free(tlb->mm, pgtable); - atomic_long_dec(&tlb->mm->nr_ptes); + zap_deposited_table(tlb->mm, pmd); add_mm_counter(tlb->mm, MM_ANONPAGES, -HPAGE_PMD_NR); } else { if (arch_needs_pgtable_deposit()) |
