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s390/mm: use VM_BUG_ON in crst_table_[upgrade|downgrade]
The BUG_ON in crst_table_[upgrade|downgrade] is a debugging aid, replace it with VM_BUG_ON. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -83,7 +83,7 @@ int crst_table_upgrade(struct mm_struct *mm, unsigned long end)
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int rc, notify;
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/* upgrade should only happen from 3 to 4, 3 to 5, or 4 to 5 levels */
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BUG_ON(mm->context.asce_limit < _REGION2_SIZE);
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VM_BUG_ON(mm->context.asce_limit < _REGION2_SIZE);
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if (end >= TASK_SIZE_MAX)
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return -ENOMEM;
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rc = 0;
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@ -124,7 +124,7 @@ void crst_table_downgrade(struct mm_struct *mm)
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pgd_t *pgd;
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/* downgrade should only happen from 3 to 2 levels (compat only) */
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BUG_ON(mm->context.asce_limit != _REGION2_SIZE);
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VM_BUG_ON(mm->context.asce_limit != _REGION2_SIZE);
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if (current->active_mm == mm) {
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clear_user_asce();
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