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| author | Mike Kravetz <mike.kravetz@oracle.com> | 2022-12-13 00:50:42 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-01-19 02:12:38 +0100 |
| commit | 379c2e60e82ff71510a949033bf8431f39f66c75 (patch) | |
| tree | 5bd9816d9fdc70e61c1f471ef12534c1c3921025 /mm/hugetlb.c | |
| parent | selftests/memfd: add tests for MFD_NOEXEC_SEAL MFD_EXEC (diff) | |
| download | linux-379c2e60e82ff71510a949033bf8431f39f66c75.tar.xz linux-379c2e60e82ff71510a949033bf8431f39f66c75.zip | |
hugetlb: update vma flag check for hugetlb vma lock
The check for whether a hugetlb vma lock exists partially depends on the
vma's flags. Currently, it checks for either VM_MAYSHARE or VM_SHARED.
The reason both flags are used is because VM_MAYSHARE was previously
cleared in hugetlb vmas as they are tore down. This is no longer the
case, and only the VM_MAYSHARE check is required.
Link: https://lkml.kernel.org/r/20221212235042.178355-2-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: James Houghton <jthoughton@google.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 92b3fd01a652..ed1ac2df582c 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -262,8 +262,7 @@ static inline struct hugepage_subpool *subpool_vma(struct vm_area_struct *vma) */ static bool __vma_shareable_lock(struct vm_area_struct *vma) { - return vma->vm_flags & (VM_MAYSHARE | VM_SHARED) && - vma->vm_private_data; + return vma->vm_flags & VM_MAYSHARE && vma->vm_private_data; } void hugetlb_vma_lock_read(struct vm_area_struct *vma) |