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| author | Suren Baghdasaryan <surenb@google.com> | 2023-02-27 20:36:20 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-06 06:02:59 +0300 |
| commit | eeff9a5d47f89bc641034fea05501c8a6de131cb (patch) | |
| tree | 851af9a8b1788fb18c749a0652c8ce11a67600a1 /include | |
| parent | f2e13784c16a98e269b3111ac02ae44446dd589c (diff) | |
| download | linux-eeff9a5d47f89bc641034fea05501c8a6de131cb.tar.xz | |
mm/mmap: prevent pagefault handler from racing with mmu_notifier registration
Page fault handlers might need to fire MMU notifications while a new
notifier is being registered. Modify mm_take_all_locks to write-lock all
VMAs and prevent this race with page fault handlers that would hold VMA
locks. VMAs are locked before i_mmap_rwsem and anon_vma to keep the same
locking order as in page fault handlers.
Link: https://lkml.kernel.org/r/20230227173632.3292573-22-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions