diff options
| author | Christian König <christian.koenig@amd.com> | 2020-09-14 15:09:33 +0200 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2020-11-19 10:36:36 +0100 |
| commit | 295992fb815e791d14b18ef7cdbbaf1a76211a31 (patch) | |
| tree | 2b72922a11a0abd63cb11969d3fd5cd7d2874e1c /include/linux | |
| parent | 1527f926fd04490f648c42f42b45218a04754f87 (diff) | |
mm: introduce vma_set_file function v5
Add the new vma_set_file() function to allow changing
vma->vm_file with the necessary refcount dance.
v2: add more users of this.
v3: add missing EXPORT_SYMBOL, rebase on mmap cleanup,
add comments why we drop the reference on two occasions.
v4: make it clear that changing an anonymous vma is illegal.
v5: move vma_set_file to mm/util.c
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v2)
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://patchwork.freedesktop.org/patch/399360/
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index db6ae4d3fb4e..47bff16c182d 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2719,6 +2719,8 @@ static inline void vma_set_page_prot(struct vm_area_struct *vma) } #endif +void vma_set_file(struct vm_area_struct *vma, struct file *file); + #ifdef CONFIG_NUMA_BALANCING unsigned long change_prot_numa(struct vm_area_struct *vma, unsigned long start, unsigned long end); |