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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-26 12:55:17 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-26 12:55:17 +0200 |
| commit | 71e69d7adee10a55b817df748dec5bfec7bf4c30 (patch) | |
| tree | ac342851e20df5a5f7891cc603998b654d26724c /mm/memory.c | |
| parent | 03b1292d1c0ea195e025e667555d74db7da82026 (diff) | |
| parent | ff1176468d368232b684f75e82563369208bc371 (diff) | |
Merge 5.14-rc3 into char-misc-next
We need the char-misc fixes from 5.14-rc3 into here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c index 747a01d495f2..25fc46e87214 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4026,8 +4026,17 @@ vm_fault_t finish_fault(struct vm_fault *vmf) return ret; } - if (unlikely(pte_alloc(vma->vm_mm, vmf->pmd))) + if (vmf->prealloc_pte) { + vmf->ptl = pmd_lock(vma->vm_mm, vmf->pmd); + if (likely(pmd_none(*vmf->pmd))) { + mm_inc_nr_ptes(vma->vm_mm); + pmd_populate(vma->vm_mm, vmf->pmd, vmf->prealloc_pte); + vmf->prealloc_pte = NULL; + } + spin_unlock(vmf->ptl); + } else if (unlikely(pte_alloc(vma->vm_mm, vmf->pmd))) { return VM_FAULT_OOM; + } } /* See comment in handle_pte_fault() */ |