mm/migrate: avoid possible unnecessary process right check in kernel_move_pages()

There is no need to check if this process has the right to modify the
specified process when they are same.  And we could also skip the security
hook call if a process is modifying its own pages.  Add helper function to
handle these.

Suggested-by: Matthew Wilcox <[email protected]>
Signed-off-by: Hongxiang Lou <[email protected]>
Signed-off-by: Miaohe Lin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Cc: Christopher Lameter <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions