diff options
| author |  Johannes Berg <johannes.berg@intel.com>
| 2022-10-18 12:49:49 +0200 |
|---|---|---|
| committer |  Richard Weinberger <richard@nod.at>
| 2023-02-01 22:11:27 +0100 |
| commit | 3271e27bba90f676fa530592ba8ec9fe51938abf (patch) | |
| tree | 0e2af14e3838983e056f33518d8fd4ab28a5bd6e /arch/um/kernel | |
| parent | hostfs: Replace kmap() with kmap_local_page() (diff) | |
| download | linux-3271e27bba90f676fa530592ba8ec9fe51938abf.tar.gz linux-3271e27bba90f676fa530592ba8ec9fe51938abf.tar.bz2 linux-3271e27bba90f676fa530592ba8ec9fe51938abf.zip | |
um: protect VMA iteration
Due to changes in the iteration, there are now lockdep
checks indicating that we're missing locking here. Add
the missing locking where it's needed.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/kernel')
| -rw-r--r-- | arch/um/kernel/tlb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index ad449173a1a1..fa43bcd9ba0b 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -597,6 +597,8 @@ void force_flush_all(void) struct vm_area_struct *vma; VMA_ITERATOR(vmi, mm, 0); + mmap_read_lock(mm); for_each_vma(vmi, vma) fix_range(mm, vma->vm_start, vma->vm_end, 1); + mmap_read_unlock(mm); } |