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authorAlistair Popple <apopple@nvidia.com>2023-01-10 13:57:22 +1100
committerAndrew Morton <akpm@linux-foundation.org>2023-02-02 22:32:54 -0800
commit7d4a8be0c4b2b7ffb367929d2b352651f083806b (patch)
tree5212561efdf216643df182e27610050c678b515f /mm/ksm.c
parent9e5522715e6941bcfdc08d066a79d6da0f8cec8e (diff)
mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only export
mmu_notifier_range_update_to_read_only() was originally introduced in commit c6d23413f81b ("mm/mmu_notifier: mmu_notifier_range_update_to_read_only() helper") as an optimisation for device drivers that know a range has only been mapped read-only. However there are no users of this feature so remove it. As it is the only user of the struct mmu_notifier_range.vma field remove that also. Link: https://lkml.kernel.org/r/20230110025722.600912-1-apopple@nvidia.com Signed-off-by: Alistair Popple <apopple@nvidia.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Ira Weiny <ira.weiny@intel.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Ralph Campbell <rcampbell@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/ksm.c')
-rw-r--r--mm/ksm.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/mm/ksm.c b/mm/ksm.c
index dd02780c387f..cea0c4478220 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1057,8 +1057,7 @@ static int write_protect_page(struct vm_area_struct *vma, struct page *page,
BUG_ON(PageTransCompound(page));
- mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm,
- pvmw.address,
+ mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, mm, pvmw.address,
pvmw.address + PAGE_SIZE);
mmu_notifier_invalidate_range_start(&range);
@@ -1164,7 +1163,7 @@ static int replace_page(struct vm_area_struct *vma, struct page *page,
if (!pmd_present(pmde) || pmd_trans_huge(pmde))
goto out;
- mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm, addr,
+ mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, mm, addr,
addr + PAGE_SIZE);
mmu_notifier_invalidate_range_start(&range);