diff options
| author | David Hildenbrand <david@redhat.com> | 2023-01-13 18:10:16 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-02 22:33:09 -0800 |
| commit | 6d239fc78c0b0c687e5408573350714e6e789d71 (patch) | |
| tree | bad7e6a685afd5f0b92283fcf7136545634e4825 /include/linux/component.h | |
| parent | 5ae3e74474f82613482ed67b0c234f61ac6ca2dd (diff) | |
parisc/mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE
Let's support __HAVE_ARCH_PTE_SWP_EXCLUSIVE by using the yet-unused
_PAGE_ACCESSED location in the swap PTE. Looking at pte_present() and
pte_none() checks, there seems to be no actual reason why we cannot use
it: we only have to make sure we're not using _PAGE_PRESENT.
Reusing this bit avoids having to steal one bit from the swap offset.
Link: https://lkml.kernel.org/r/20230113171026.582290-17-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/component.h')
0 files changed, 0 insertions, 0 deletions