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| author | Qi Zheng <[email protected]> | 2024-09-26 14:46:20 +0800 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2024-11-05 16:56:27 -0800 |
| commit | 6dfd0d2cb3691040979ddbd6c758956694a3185d (patch) | |
| tree | 86a3d82508709534d9a87023bd02b83e8fcb8f11 /tools/perf/scripts/python/mem-phys-addr.py | |
| parent | d9c1ddf37b4c287597a4578e70d19ed68d536be8 (diff) | |
mm: khugepaged: collapse_pte_mapped_thp() use pte_offset_map_rw_nolock()
In collapse_pte_mapped_thp(), we may modify the pte and pmd entry after
acquiring the ptl, so convert it to using pte_offset_map_rw_nolock(). At
this time, the pte_same() check is not performed after the PTL held. So
we should get pgt_pmd and do pmd_same() check after the ptl held.
Link: https://lkml.kernel.org/r/055e42db68da00ac8ecab94bd2633c7cd965eb1c.1727332572.git.zhengqi.arch@bytedance.com
Signed-off-by: Qi Zheng <[email protected]>
Reviewed-by: Muchun Song <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Mike Rapoport (Microsoft) <[email protected]>
Cc: Peter Xu <[email protected]>
Cc: Ryan Roberts <[email protected]>
Cc: Vishal Moola (Oracle) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/mem-phys-addr.py')
0 files changed, 0 insertions, 0 deletions