Messages in this thread Patch in this message |  | | From | Liam Howlett <> | Subject | [PATCH v11 26/69] mm: convert vma_lookup() to use mtree_load() | Date | Sun, 17 Jul 2022 02:46:45 +0000 |
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From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
Unlike the rbtree, the Maple Tree will return a NULL if there's nothing at a particular address.
Since the previous commit dropped the vmacache, it is now possible to consult the tree directly.
Link: https://lkml.kernel.org/r/20220504011345.662299-11-Liam.Howlett@oracle.com Link: https://lkml.kernel.org/r/20220621204632.3370049-27-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Howells <dhowells@redhat.com> Cc: SeongJae Park <sj@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mm.h | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h index 55b4b53895e8..a250fd86fde9 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2809,12 +2809,7 @@ struct vm_area_struct *find_vma_intersection(struct mm_struct *mm, static inline struct vm_area_struct *vma_lookup(struct mm_struct *mm, unsigned long addr) { - struct vm_area_struct *vma = find_vma(mm, addr); - - if (vma && addr < vma->vm_start) - vma = NULL; - - return vma; + return mtree_load(&mm->mm_mt, addr); } static inline unsigned long vm_start_gap(struct vm_area_struct *vma) -- 2.35.1
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