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| author |   Miaohe Lin <linmiaohe@huawei.com> | 2020-08-06 23:23:34 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-07 11:33:27 -0700 |
| commit | d70cec8983241a6aafadf78e2d65bbafac87ab6a (patch) | |
| tree | c8b3cafa4ce9f3d7df68b0396a87eb6c6841949f /ipc | |
| parent | arm64/mm: enable vmem_altmap support for vmemmap mappings (diff) | |
| download | linux-dev-d70cec8983241a6aafadf78e2d65bbafac87ab6a.tar.xz linux-dev-d70cec8983241a6aafadf78e2d65bbafac87ab6a.zip | |
mm: mmap: merge vma after call_mmap() if possible
The vm_flags may be changed after call_mmap() because drivers may set some
flags for their own purpose. As a result, we failed to merge the adjacent
vma due to the different vm_flags as userspace can't pass in the same one.
Try to merge vma after call_mmap() to fix this issue.
Signed-off-by: Hongxiang Lou <louhongxiang@huawei.com>
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/1594954065-23733-1-git-send-email-linmiaohe@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc')
0 files changed, 0 insertions, 0 deletions