diff options
| author | Qi Zheng <[email protected]> | 2022-09-29 19:23:17 +0800 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2022-10-12 18:51:50 -0700 |
| commit | bce8cb3c04dc01d21b6b17baf1cb6c277e7e6848 (patch) | |
| tree | 14e2a35452ed18698b8fdc986c89c22e4a4a2c53 | |
| parent | d6e5040bd8e53371fafd7e0c7c63b090b3a675db (diff) | |
mm: use update_mmu_tlb() on the second thread
As message in commit 7df676974359 ("mm/memory.c: Update local TLB if PTE
entry exists") said, we should update local TLB only on the second thread.
So in the do_anonymous_page() here, we should use update_mmu_tlb()
instead of update_mmu_cache() on the second thread.
As David pointed out, this is a performance improvement, not a
correctness fix.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Qi Zheng <[email protected]>
Reviewed-by: Muchun Song <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Cc: Bibo Mao <[email protected]>
Cc: Chris Zankel <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Max Filippov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
| -rw-r--r-- | mm/memory.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c index 4ad6077164cd..f88c351aecd4 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4134,7 +4134,7 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf) vmf->pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd, vmf->address, &vmf->ptl); if (!pte_none(*vmf->pte)) { - update_mmu_cache(vma, vmf->address, vmf->pte); + update_mmu_tlb(vma, vmf->address, vmf->pte); goto release; } |