]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/commit - mm/migrate.c
mm/migrate: avoid possible unnecessary process right check in kernel_move_pages()
authorMiaohe Lin <linmiaohe@huawei.com>
Sat, 17 Oct 2020 23:14:03 +0000 (16:14 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sun, 18 Oct 2020 16:27:09 +0000 (09:27 -0700)
commit4dc200cee1950ac3f9b99f0c8d4a750b62958f81
tree0033042fe9ff030817fdc005d6788e2ba25e8a3b
parent203e6e5ca4eac64c8909debfd64aae3fd62b2a16
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 <willy@infradead.org>
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>
Cc: Christopher Lameter <cl@linux.com>
Link: https://lkml.kernel.org/r/20200819083331.19012-1-linmiaohe@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/migrate.c