The patch titled
Subject: merge fix for "s390/pci: remove races against pte updates"
has been added to the -mm tree. Its filename is
mm-simplify-follow_ptepmd-fix.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-simplify-follow_ptepmd-fix.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-simplify-follow_ptepmd-fix.patch
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------------------------------------------------------
From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Subject: merge fix for "s390/pci: remove races against pte updates"
Link: https://lkml.kernel.org/r/20201111221254.7f6a3658@xxxxxxxxxxxxxxxx
Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Reported-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/s390/pci/pci_mmio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/s390/pci/pci_mmio.c~mm-simplify-follow_ptepmd-fix
+++ a/arch/s390/pci/pci_mmio.c
@@ -173,7 +173,7 @@ SYSCALL_DEFINE3(s390_pci_mmio_write, uns
if (!(vma->vm_flags & VM_WRITE))
goto out_unlock_mmap;
- ret = follow_pte_pmd(vma->vm_mm, mmio_addr, NULL, &ptep, NULL, &ptl);
+ ret = follow_pte(vma->vm_mm, mmio_addr, NULL, &ptep, NULL, &ptl);
if (ret)
goto out_unlock_mmap;
@@ -317,7 +317,7 @@ SYSCALL_DEFINE3(s390_pci_mmio_read, unsi
if (!(vma->vm_flags & VM_WRITE))
goto out_unlock_mmap;
- ret = follow_pte_pmd(vma->vm_mm, mmio_addr, NULL, &ptep, NULL, &ptl);
+ ret = follow_pte(vma->vm_mm, mmio_addr, NULL, &ptep, NULL, &ptl);
if (ret)
goto out_unlock_mmap;
_
Patches currently in -mm which might be from sfr@xxxxxxxxxxxxxxxx are
kernelh-split-out-mathematical-helpers-fix.patch
mm-simplify-follow_ptepmd-fix.patch
kasan-split-out-shadowc-from-commonc-fix2.patch
