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| author | Liam R. Howlett <Liam.Howlett@Oracle.com> | 2022-09-06 19:48:51 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-09-26 19:46:18 -0700 |
| commit | d7c62295570f012e1d386ae6ed472b36baf037ad (patch) | |
| tree | 0120999a1a7b8e9ee1283ac7b075b8e2409fcdf1 /include/linux | |
| parent | 7964cf8caa4dfa42c4149f3833d3878713cda3dc (diff) | |
| download | lwn-d7c62295570f012e1d386ae6ed472b36baf037ad.tar.gz lwn-d7c62295570f012e1d386ae6ed472b36baf037ad.zip | |
mm: convert vma_lookup() to use mtree_load()
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/20220906194824.2110408-27-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>
Tested-by: Yu Zhao <yuzhao@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: SeongJae Park <sj@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm.h | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 06a6b8db75b7..49a58807719b 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2795,12 +2795,7 @@ 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) |