mm: pagewalk: add api documentation for walk_page_range_novma()
Link: https://lkml.kernel.org/r/8991525.CDJkKcVGEf@devpool047 Signed-off-by: Rolf Eike Beer <eb@emlix.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -479,7 +479,15 @@ int walk_page_range(struct mm_struct *mm, unsigned long start,
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return err;
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return err;
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}
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}
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/*
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/**
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* walk_page_range_novma - walk a range of pagetables not backed by a vma
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* @mm: mm_struct representing the target process of page table walk
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* @start: start address of the virtual address range
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* @end: end address of the virtual address range
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* @ops: operation to call during the walk
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* @pgd: pgd to walk if different from mm->pgd
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* @private: private data for callbacks' usage
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*
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* Similar to walk_page_range() but can walk any page tables even if they are
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* Similar to walk_page_range() but can walk any page tables even if they are
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* not backed by VMAs. Because 'unusual' entries may be walked this function
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* not backed by VMAs. Because 'unusual' entries may be walked this function
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* will also not lock the PTEs for the pte_entry() callback. This is useful for
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* will also not lock the PTEs for the pte_entry() callback. This is useful for
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