From: James Morse <james.morse@xxxxxxx>
Subject: mm: pagewalk: fix the comment for test_walk
Modify the comment describing struct mm_walk->test_walk()s behaviour to
match the comment on walk_page_test() and the behaviour of
walk_page_vma().
Fixes: fafaa4264eba4 ("pagewalk: improve vma handling")
Link: http://lkml.kernel.org/r/1471622518-21980-1-git-send-email-james.morse@xxxxxxx
Signed-off-by: James Morse <james.morse@xxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN include/linux/mm.h~mm-pagewalk-fix-the-comment-for-test_walk include/linux/mm.h
--- a/include/linux/mm.h~mm-pagewalk-fix-the-comment-for-test_walk
+++ a/include/linux/mm.h
@@ -1197,10 +1197,10 @@ void unmap_vmas(struct mmu_gather *tlb,
* @pte_hole: if set, called for each hole at all levels
* @hugetlb_entry: if set, called for each hugetlb entry
* @test_walk: caller specific callback function to determine whether
- * we walk over the current vma or not. A positive returned
+ * we walk over the current vma or not. Returning 0
* value means "do page table walk over the current vma,"
* and a negative one means "abort current page table walk
- * right now." 0 means "skip the current vma."
+ * right now." 1 means "skip the current vma."
* @mm: mm_struct representing the target process of page table walk
* @vma: vma currently walked (NULL if walking outside vmas)
* @private: private data for callbacks' usage
_
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