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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org
Cc: Andrea Arcangeli <aarcange@redhat.com>,
	linuxppc-dev@lists.ozlabs.org,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH -V4 16/25] mm/THP: withdraw the pgtable after pmdp related operations
Date: Thu, 21 Mar 2013 01:05:01 +0530	[thread overview]
Message-ID: <1363808110-25748-17-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1363808110-25748-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>

From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>

For architectures like ppc64 we look at deposited pgtable when
calling pmdp_get_and_clear. So do the pgtable_trans_huge_withdraw
after finishing pmdp related operations.

Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 mm/huge_memory.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index e91b763..5c7cd7d 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1380,9 +1380,10 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
 		struct page *page;
 		pgtable_t pgtable;
 		pmd_t orig_pmd;
-		pgtable = pgtable_trans_huge_withdraw(tlb->mm, pmd);
+
 		orig_pmd = pmdp_get_and_clear(tlb->mm, addr, pmd);
 		tlb_remove_pmd_tlb_entry(tlb, pmd, addr);
+		pgtable = pgtable_trans_huge_withdraw(tlb->mm, pmd);
 		if (is_huge_zero_pmd(orig_pmd)) {
 			tlb->mm->nr_ptes--;
 			spin_unlock(&tlb->mm->page_table_lock);
-- 
1.7.10

  parent reply	other threads:[~2013-03-20 19:35 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-20 19:34 [PATCH -V4 00/25] THP support for PPC64 Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 01/25] powerpc: Use signed formatting when printing error Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 02/25] powerpc: Save DAR and DSISR in pt_regs on MCE Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 03/25] powerpc: Don't hard code the size of pte page Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 04/25] powerpc: Reduce the PTE_INDEX_SIZE Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 05/25] powerpc: Move the pte free routines from common header Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 06/25] powerpc: Reduce PTE table memory wastage Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 07/25] powerpc: Use encode avpn where we need only avpn values Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 08/25] powerpc: Decode the pte-lp-encoding bits correctly Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 09/25] powerpc: Fix hpte_decode to use the correct decoding for page sizes Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 10/25] powerpc: print both base and actual page size on hash failure Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 11/25] powerpc: Print page size info during boot Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 12/25] powerpc: Return all the valid pte ecndoing in KVM_PPC_GET_SMMU_INFO ioctl Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 13/25] powerpc: Update tlbie/tlbiel as per ISA doc Aneesh Kumar K.V
2013-03-20 19:34 ` [PATCH -V4 14/25] mm/THP: HPAGE_SHIFT is not a #define on some arch Aneesh Kumar K.V
2013-03-20 19:35 ` [PATCH -V4 15/25] mm/THP: Add pmd args to pgtable deposit and withdraw APIs Aneesh Kumar K.V
2013-03-20 19:35 ` Aneesh Kumar K.V [this message]
2013-03-20 19:35 ` [PATCH -V4 17/25] powerpc/THP: Implement transparent hugepages for ppc64 Aneesh Kumar K.V
2013-03-20 19:35 ` [PATCH -V4 18/25] powerpc/THP: Double the PMD table size for THP Aneesh Kumar K.V
2013-03-20 19:35 ` [PATCH -V4 19/25] powerpc/THP: Differentiate THP PMD entries from HUGETLB PMD entries Aneesh Kumar K.V
2013-03-20 19:35 ` [PATCH -V4 20/25] powerpc/THP: Add code to handle HPTE faults for large pages Aneesh Kumar K.V
2013-03-20 19:35 ` [PATCH -V4 21/25] powerpc: Handle hugepage in perf callchain Aneesh Kumar K.V
2013-03-20 19:35 ` [PATCH -V4 22/25] powerpc/THP: get_user_pages_fast changes Aneesh Kumar K.V
2013-03-20 19:35 ` [PATCH -V4 23/25] powerpc/THP: Enable THP on PPC64 Aneesh Kumar K.V
2013-03-20 19:35 ` [PATCH -V4 24/25] powerpc: Optimize hugepage invalidate Aneesh Kumar K.V
2013-03-20 19:35 ` [PATCH -V4 25/25] powerpc: Handle hugepages in kvm Aneesh Kumar K.V

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