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| author | Michel Lespinasse <walken@google.com> | 2012-10-08 16:31:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 16:22:42 +0900 |
| commit | ed8ea8150182f8d715fceb3b175ef0a9ebacd872 (patch) | |
| tree | 3af48f3a947df4dc5a0df660988f61d454a88cf2 /include/linux/mm.h | |
| parent | 86c2ad19956f84f2191e062fcb979367b6365871 (diff) | |
| download | lwn-ed8ea8150182f8d715fceb3b175ef0a9ebacd872.tar.gz lwn-ed8ea8150182f8d715fceb3b175ef0a9ebacd872.zip | |
mm: add CONFIG_DEBUG_VM_RB build option
Add a CONFIG_DEBUG_VM_RB build option for the previously existing
DEBUG_MM_RB code. Now that Andi Kleen modified it to avoid using
recursive algorithms, we can expose it a bit more.
Also extend this code to validate_mm() after stack expansion, and to check
that the vma's start and last pgoffs have not changed since the nodes were
inserted on the anon vma interval tree (as it is important that the nodes
be reindexed after each such update).
Signed-off-by: Michel Lespinasse <walken@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Daniel Santos <daniel.santos@pobox.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 0cdab4e0f814..0e6f9c9f2123 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1386,6 +1386,9 @@ struct anon_vma_chain *anon_vma_interval_tree_iter_first( struct rb_root *root, unsigned long start, unsigned long last); struct anon_vma_chain *anon_vma_interval_tree_iter_next( struct anon_vma_chain *node, unsigned long start, unsigned long last); +#ifdef CONFIG_DEBUG_VM_RB +void anon_vma_interval_tree_verify(struct anon_vma_chain *node); +#endif #define anon_vma_interval_tree_foreach(avc, root, start, last) \ for (avc = anon_vma_interval_tree_iter_first(root, start, last); \ |