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| author | Michel Lespinasse <walken@google.com> | 2012-10-09 01:31:25 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 09:22:39 +0200 |
| commit | 6b2dbba8b6ac4df26f72eda1e5ea7bab9f950e08 (patch) | |
| tree | 422ed8d7ac2fe45069f20cfba84a9a097bf444af /kernel/fork.c | |
| parent | rbtree: add prio tree and interval tree tests (diff) | |
| download | linux-6b2dbba8b6ac4df26f72eda1e5ea7bab9f950e08.tar.xz linux-6b2dbba8b6ac4df26f72eda1e5ea7bab9f950e08.zip | |
mm: replace vma prio_tree with an interval tree
Implement an interval tree as a replacement for the VMA prio_tree. The
algorithms are similar to lib/interval_tree.c; however that code can't be
directly reused as the interval endpoints are not explicitly stored in the
VMA. So instead, the common algorithm is moved into a template and the
details (node type, how to get interval endpoints from the node, etc) are
filled in using the C preprocessor.
Once the interval tree functions are available, using them as a
replacement to the VMA prio tree is a relatively simple, mechanical job.
Signed-off-by: Michel Lespinasse <walken@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 972762e01024..90dace52715e 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -423,7 +423,7 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm) mapping->i_mmap_writable++; flush_dcache_mmap_lock(mapping); /* insert tmp into the share list, just after mpnt */ - vma_prio_tree_add(tmp, mpnt); + vma_interval_tree_add(tmp, mpnt, mapping); flush_dcache_mmap_unlock(mapping); mutex_unlock(&mapping->i_mmap_mutex); } |