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Revert "mm: skip speculative path for non-anonymous COW faults"

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This reverts commit d95ca82a5d.

Change-Id: I65cd50b4aab3578fdb2ae1b67d25a84775b19c4e
Signed-off-by: Alexander Winkowski <dereference23@outlook.com>
This commit is contained in:
Alexander Winkowski 2024-01-12 05:04:10 +00:00
commit 8b720d1a14
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1 changed files with 1 additions and 5 deletions
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6
mm/memory.c
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@ -4458,11 +4458,7 @@ int __handle_speculative_fault(struct mm_struct *mm, unsigned long address,
* because vm_next and vm_prev must be safe. This can't be guaranteed
* in the speculative path.
*/
if (unlikely((vma_is_anonymous(vmf.vma) && !vmf.vma->anon_vma) ||
(!vma_is_anonymous(vmf.vma) &&
!(vmf.vma->vm_flags & VM_SHARED) &&
(vmf.flags & FAULT_FLAG_WRITE) &&
!vmf.vma->anon_vma)))
if (unlikely(vma_is_anonymous(vmf.vma) && !vmf.vma->anon_vma))
return VM_FAULT_RETRY;
vmf.vma_flags = READ_ONCE(vmf.vma->vm_flags);