diff options
| author | Dave Kleikamp <shaggy@linux.vnet.ibm.com> | 2008-07-07 16:28:51 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-09 08:30:45 +0200 |
| commit | b845f313d78e4e259ec449909e3bbadf77b53a6d (patch) | |
| tree | 03239e77dbc43f627ce112963736c8b4c53117e6 /virt | |
| parent | powerpc: Implement task_pt_regs() accessor (diff) | |
| download | linux-b845f313d78e4e259ec449909e3bbadf77b53a6d.tar.xz linux-b845f313d78e4e259ec449909e3bbadf77b53a6d.zip | |
mm: Allow architectures to define additional protection bits
This patch allows architectures to define functions to deal with
additional protections bits for mmap() and mprotect().
arch_calc_vm_prot_bits() maps additonal protection bits to vm_flags
arch_vm_get_page_prot() maps additional vm_flags to the vma's vm_page_prot
arch_validate_prot() checks for valid values of the protection bits
Note: vm_get_page_prot() is now pretty ugly, but the generated code
should be identical for architectures that don't define additional
protection bits.
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions