diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-09-06 22:48:46 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-09-27 05:46:15 +0300 |
| commit | f39af05949a4280b9f04d5dd0f606b81aac3dae8 (patch) | |
| tree | de12c542cd4db626c9f147cd897236c25be35cac /include/linux/mm_types.h | |
| parent | d4af56c5c7c6781ca6ca8075e2cf5bc119ed33d1 (diff) | |
| download | linux-f39af05949a4280b9f04d5dd0f606b81aac3dae8.tar.xz | |
mm: add VMA iterator
This thin layer of abstraction over the maple tree state is for iterating
over VMAs. You can go forwards, go backwards or ask where the iterator
is. Rename the existing vma_next() to __vma_next() -- it will be removed
by the end of this series.
Link: https://lkml.kernel.org/r/20220906194824.2110408-10-Liam.Howlett@oracle.com
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Tested-by: Yu Zhao <yuzhao@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Howells <dhowells@redhat.com>
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/mm_types.h')
| -rw-r--r-- | include/linux/mm_types.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 425bc5f7d477..d0b51fbdf5d4 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -777,6 +777,27 @@ static inline void lru_gen_use_mm(struct mm_struct *mm) #endif /* CONFIG_LRU_GEN */ +struct vma_iterator { + struct ma_state mas; +}; + +#define VMA_ITERATOR(name, __mm, __addr) \ + struct vma_iterator name = { \ + .mas = { \ + .tree = &(__mm)->mm_mt, \ + .index = __addr, \ + .node = MAS_START, \ + }, \ + } + +static inline void vma_iter_init(struct vma_iterator *vmi, + struct mm_struct *mm, unsigned long addr) +{ + vmi->mas.tree = &mm->mm_mt; + vmi->mas.index = addr; + vmi->mas.node = MAS_START; +} + struct mmu_gather; extern void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm); extern void tlb_gather_mmu_fullmm(struct mmu_gather *tlb, struct mm_struct *mm); |