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| author | Mike Kravetz <mike.kravetz@oracle.com> | 2022-11-14 15:55:07 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-11-30 15:58:55 -0800 |
| commit | 369258ce41c6d7663a7b6d509356fecad577378d (patch) | |
| tree | c2aea6e3a286a0aab257cc418e1325d749d559a2 /mm/shmem.c | |
| parent | c2da319c2e2789dccb20fdafe520ac61c9df84f7 (diff) | |
| download | net-369258ce41c6d7663a7b6d509356fecad577378d.tar.gz | |
hugetlb: remove duplicate mmu notifications
The common hugetlb unmap routine __unmap_hugepage_range performs mmu
notification calls. However, in the case where __unmap_hugepage_range is
called via __unmap_hugepage_range_final, mmu notification calls are
performed earlier in other calling routines.
Remove mmu notification calls from __unmap_hugepage_range. Add
notification calls to the only other caller: unmap_hugepage_range.
unmap_hugepage_range is called for truncation and hole punch, so change
notification type from UNMAP to CLEAR as this is more appropriate.
Link: https://lkml.kernel.org/r/20221114235507.294320-4-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Suggested-by: Peter Xu <peterx@redhat.com>
Cc: Wei Chen <harperchen1110@gmail.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/shmem.c')
0 files changed, 0 insertions, 0 deletions