diff options
| author | David Hildenbrand <david@redhat.com> | 2023-01-13 18:10:08 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-02 22:33:07 -0800 |
| commit | ad3150f11b099321331f2f74d008e86ab2a04c7a (patch) | |
| tree | 82d4499ac0639b7b77f2eb8c301907810eea418f /kernel/bpf/helpers.c | |
| parent | 3151cc26565ea864c51a78900101ad68b864f405 (diff) | |
loongarch/mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE
Let's support __HAVE_ARCH_PTE_SWP_EXCLUSIVE by stealing one bit from the
type. Generic MM currently only uses 5 bits for the type
(MAX_SWAPFILES_SHIFT), so the stolen bit is effectively unused.
While at it, also mask the type in mk_swap_pte().
Note that this bit does not conflict with swap PMDs and could also be used
in swap PMD context later.
Link: https://lkml.kernel.org/r/20230113171026.582290-9-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel/bpf/helpers.c')
0 files changed, 0 insertions, 0 deletions