Messages in this thread Patch in this message | | | From | Liam Howlett <> | Subject | [PATCH v12 51/69] mm/gup: use maple tree navigation instead of linked list | Date | Wed, 20 Jul 2022 02:17:59 +0000 |
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From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
Use find_vma_intersection() to locate the VMAs in __mm_populate() instead of using find_vma() and the linked list.
Link: https://lkml.kernel.org/r/20220504011345.662299-36-Liam.Howlett@oracle.com Link: https://lkml.kernel.org/r/20220621204632.3370049-52-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Howells <dhowells@redhat.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: SeongJae Park <sj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/gup.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/mm/gup.c b/mm/gup.c index 407a81d5ca03..f0e5d68ea932 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -1641,10 +1641,11 @@ int __mm_populate(unsigned long start, unsigned long len, int ignore_errors) if (!locked) { locked = 1; mmap_read_lock(mm); - vma = find_vma(mm, nstart); + vma = find_vma_intersection(mm, nstart, end); } else if (nstart >= vma->vm_end) - vma = vma->vm_next; - if (!vma || vma->vm_start >= end) + vma = find_vma_intersection(mm, vma->vm_end, end); + + if (!vma) break; /* * Set [nstart; nend) to intersection of desired address -- 2.35.1
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