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| author | Michel Lespinasse <walken@google.com> | 2012-10-08 16:31:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 16:22:39 +0900 |
| commit | 6b2dbba8b6ac4df26f72eda1e5ea7bab9f950e08 (patch) | |
| tree | 422ed8d7ac2fe45069f20cfba84a9a097bf444af /mm/hugetlb.c | |
| parent | fff3fd8a1210a165252cd7cd01206da7a90d3a06 (diff) | |
| download | linux-stable-6b2dbba8b6ac4df26f72eda1e5ea7bab9f950e08.tar.gz linux-stable-6b2dbba8b6ac4df26f72eda1e5ea7bab9f950e08.tar.bz2 linux-stable-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 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index f1bb534254f6..c9b40e3a9936 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2474,7 +2474,6 @@ static int unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma, struct hstate *h = hstate_vma(vma); struct vm_area_struct *iter_vma; struct address_space *mapping; - struct prio_tree_iter iter; pgoff_t pgoff; /* @@ -2491,7 +2490,7 @@ static int unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma, * __unmap_hugepage_range() is called as the lock is already held */ mutex_lock(&mapping->i_mmap_mutex); - vma_prio_tree_foreach(iter_vma, &iter, &mapping->i_mmap, pgoff, pgoff) { + vma_interval_tree_foreach(iter_vma, &mapping->i_mmap, pgoff, pgoff) { /* Do not unmap the current VMA */ if (iter_vma == vma) continue; |