The patch titled
Subject: mm, dax: dax-pmd vs thp-pmd vs hugetlbfs-pmd v5
has been added to the -mm tree. Its filename is
mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5.patch
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------------------------------------------------------
From: Dan Williams <dan.j.williams@xxxxxxxxx>
Subject: mm, dax: dax-pmd vs thp-pmd vs hugetlbfs-pmd v5
Add a missing pmd_devmap() check to pmd_trans_huge_lock() (Willy)
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Reported-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Cc: Dave Hansen <dave@xxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/huge_mm.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN include/linux/huge_mm.h~mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5 include/linux/huge_mm.h
--- a/include/linux/huge_mm.h~mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5
+++ a/include/linux/huge_mm.h
@@ -125,7 +125,7 @@ static inline bool pmd_trans_huge_lock(p
spinlock_t **ptl)
{
VM_BUG_ON_VMA(!rwsem_is_locked(&vma->vm_mm->mmap_sem), vma);
- if (pmd_trans_huge(*pmd))
+ if (pmd_trans_huge(*pmd) || pmd_devmap(*pmd))
return __pmd_trans_huge_lock(pmd, vma, ptl);
else
return false;
diff -puN mm/huge_memory.c~mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5 mm/huge_memory.c
_
Patches currently in -mm which might be from dan.j.williams@xxxxxxxxx are
pmem-dax-clean-up-clear_pmem.patch
dax-increase-granularity-of-dax_clear_blocks-operations.patch
dax-guarantee-page-aligned-results-from-bdev_direct_access.patch
dax-fix-lifetime-of-in-kernel-dax-mappings-with-dax_map_atomic.patch
dax-fix-lifetime-of-in-kernel-dax-mappings-with-dax_map_atomic-v3.patch
um-kill-pfn_t.patch
kvm-rename-pfn_t-to-kvm_pfn_t.patch
mm-dax-pmem-introduce-pfn_t.patch
mm-skip-memory-block-registration-for-zone_device.patch
mm-introduce-find_dev_pagemap.patch
x86-mm-introduce-vmem_altmap-to-augment-vmemmap_populate.patch
libnvdimm-pfn-pmem-allocate-memmap-array-in-persistent-memory.patch
avr32-convert-to-asm-generic-memory_modelh.patch
hugetlb-fix-compile-error-on-tile.patch
frv-fix-compiler-warning-from-definition-of-__pmd.patch
x86-mm-introduce-_page_devmap.patch
mm-dax-gpu-convert-vm_insert_mixed-to-pfn_t.patch
mm-dax-convert-vmf_insert_pfn_pmd-to-pfn_t.patch
libnvdimm-pmem-move-request_queue-allocation-earlier-in-probe.patch
mm-dax-pmem-introduce-getput_dev_pagemap-for-dax-gup.patch
mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd.patch
mm-dax-dax-pmd-vs-thp-pmd-vs-hugetlbfs-pmd-v5.patch
mm-x86-get_user_pages-for-dax-mappings.patch
dax-provide-diagnostics-for-pmd-mapping-failures.patch
dax-re-enable-dax-pmd-mappings.patch
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