diff options
| author | Wei Yang <[email protected]> | 2020-08-06 23:23:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-08-07 11:33:27 -0700 |
| commit | 349d9fbb0b0a6734bcac9c08c5cc21992da5d2e6 (patch) | |
| tree | 98d42d6922cf9efaa7f5f2a4107e53b21f8e3d71 | |
| parent | 9ad9718bfa41f6ae62fb2a7244357e99ac00d25a (diff) | |
mm/mremap: start addresses are properly aligned
After previous cleanup, extent is the minimal step for both source and
destination. This means when extent is HPAGE_PMD_SIZE or PMD_SIZE,
old_addr and new_addr are properly aligned too.
Since these two functions are only invoked in move_page_tables, it is safe
to remove the check now.
Signed-off-by: Wei Yang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Tested-by: Dmitry Osipenko <[email protected]>
Acked-by: Kirill A. Shutemov <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Anshuman Khandual <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Peter Xu <[email protected]>
Cc: Sean Christopherson <[email protected]>
Cc: Thomas Hellstrom <[email protected]>
Cc: Thomas Hellstrom (VMware) <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Yang Shi <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/huge_memory.c | 3 | ||||
| -rw-r--r-- | mm/mremap.c | 3 |
2 files changed, 0 insertions, 6 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 1e580fdad4d0..462a7dbd6350 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1729,9 +1729,6 @@ bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr, struct mm_struct *mm = vma->vm_mm; bool force_flush = false; - if ((old_addr & ~HPAGE_PMD_MASK) || (new_addr & ~HPAGE_PMD_MASK)) - return false; - /* * The destination pmd shouldn't be established, free_pgtables() * should have release it. diff --git a/mm/mremap.c b/mm/mremap.c index c3622bfcf6d9..138abbae4f75 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -199,9 +199,6 @@ static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr, struct mm_struct *mm = vma->vm_mm; pmd_t pmd; - if ((old_addr & ~PMD_MASK) || (new_addr & ~PMD_MASK)) - return false; - /* * The destination pmd shouldn't be established, free_pgtables() * should have released it. |