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| author |   Yisheng Xie <xieyisheng1@huawei.com> | 2018-01-31 16:17:29 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-31 17:18:37 -0800 |
| commit | 9bebc09fcf4fb25e36cf86af764c038b92f64057 (patch) | |
| tree | 816871694b79714786b9fe6e24f1ce55818530fb /mm | |
| parent | mm: memory_hotplug: remove second __nr_to_section in register_page_bootmem_info_section() (diff) | |
| download | linux-dev-9bebc09fcf4fb25e36cf86af764c038b92f64057.tar.xz linux-dev-9bebc09fcf4fb25e36cf86af764c038b92f64057.zip | |
mm/huge_memory.c: fix comment in __split_huge_pmd_locked
pmd_trans_splitting() was removed after THP refcounting redesign,
therefore related comment should be updated.
Link: http://lkml.kernel.org/r/1512625745-59451-1-git-send-email-xieyisheng1@huawei.com
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Acked-by: 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 | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 0e7ded98d114..0d3ae51ce4f7 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2205,10 +2205,9 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, * for the same virtual address to be loaded simultaneously. So instead * of doing "pmd_populate(); flush_pmd_tlb_range();" we first mark the * current pmd notpresent (atomically because here the pmd_trans_huge - * and pmd_trans_splitting must remain set at all times on the pmd - * until the split is complete for this pmd), then we flush the SMP TLB - * and finally we write the non-huge version of the pmd entry with - * pmd_populate. + * must remain set at all times on the pmd until the split is complete + * for this pmd), then we flush the SMP TLB and finally we write the + * non-huge version of the pmd entry with pmd_populate. */ pmdp_invalidate(vma, haddr, pmd); pmd_populate(mm, pmd, pgtable); |