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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-07 21:39:33 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-07 21:39:33 +0300 |
commit | 81e11336d97e7a4c25a65c302ef2bf9cd9808ed4 (patch) | |
tree | 44e069e0bb26068137a1bda7ca5125c5b068b4ab /mm/huge_memory.c | |
parent | 5631c5e0eb9035d92ceb20fcd9cdb7779a3f5cc7 (diff) | |
parent | 912c05720f00d039103d356a59c37dc7c3995e01 (diff) | |
download | linux-81e11336d97e7a4c25a65c302ef2bf9cd9808ed4.tar.xz |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:
- a few MM hotfixes
- kthread, tools, scripts, ntfs and ocfs2
- some of MM
Subsystems affected by this patch series: kthread, tools, scripts, ntfs,
ocfs2 and mm (hofixes, pagealloc, slab-generic, slab, slub, kcsan,
debug, pagecache, gup, swap, shmem, memcg, pagemap, mremap, mincore,
sparsemem, vmalloc, kasan, pagealloc, hugetlb and vmscan).
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (162 commits)
mm: vmscan: consistent update to pgrefill
mm/vmscan.c: fix typo
khugepaged: khugepaged_test_exit() check mmget_still_valid()
khugepaged: retract_page_tables() remember to test exit
khugepaged: collapse_pte_mapped_thp() protect the pmd lock
khugepaged: collapse_pte_mapped_thp() flush the right range
mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible
mm: thp: replace HTTP links with HTTPS ones
mm/page_alloc: fix memalloc_nocma_{save/restore} APIs
mm/page_alloc.c: skip setting nodemask when we are in interrupt
mm/page_alloc: fallbacks at most has 3 elements
mm/page_alloc: silence a KASAN false positive
mm/page_alloc.c: remove unnecessary end_bitidx for [set|get]_pfnblock_flags_mask()
mm/page_alloc.c: simplify pageblock bitmap access
mm/page_alloc.c: extract the common part in pfn_to_bitidx()
mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migratetype_bits
mm/shuffle: remove dynamic reconfiguration
mm/memory_hotplug: document why shuffle_zone() is relevant
mm/page_alloc: remove nr_free_pagecache_pages()
mm: remove vm_total_pages
...
Diffstat (limited to 'mm/huge_memory.c')
-rw-r--r-- | mm/huge_memory.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 78c84bee7e29..206f52b36ffb 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1722,19 +1722,13 @@ static pmd_t move_soft_dirty_pmd(pmd_t pmd) } bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr, - unsigned long new_addr, unsigned long old_end, - pmd_t *old_pmd, pmd_t *new_pmd) + unsigned long new_addr, pmd_t *old_pmd, pmd_t *new_pmd) { spinlock_t *old_ptl, *new_ptl; pmd_t pmd; struct mm_struct *mm = vma->vm_mm; bool force_flush = false; - if ((old_addr & ~HPAGE_PMD_MASK) || - (new_addr & ~HPAGE_PMD_MASK) || - old_end - old_addr < HPAGE_PMD_SIZE) - return false; - /* * The destination pmd shouldn't be established, free_pgtables() * should have release it. @@ -2069,8 +2063,8 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, * free), userland could trigger a small page size TLB miss on the * small sized TLB while the hugepage TLB entry is still established in * the huge TLB. Some CPU doesn't like that. - * See http://support.amd.com/us/Processor_TechDocs/41322.pdf, Erratum - * 383 on page 93. Intel should be safe but is also warns that it's + * See http://support.amd.com/TechDocs/41322_10h_Rev_Gd.pdf, Erratum + * 383 on page 105. Intel should be safe but is also warns that it's * only safe if the permission and cache attributes of the two entries * loaded in the two TLB is identical (which should be the case here). * But it is generally safer to never allow small and huge TLB entries |