diff options
| author | Hirokazu Takata <takata@linux-m32r.org> | 2007-05-10 22:22:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-11 08:29:33 -0700 |
| commit | 23c9bbbac57ae50dceadfda37b49785ec04dd42f (patch) | |
| tree | ad04af7dc8306767613dd1774bced3a75b0540c0 /ipc/ipc_sysctl.c | |
| parent | 0d4f64681695b0e389f7121eb647b27c602990bc (diff) | |
m32r: fix pte_to_pgoff(), pgoff_to_pte() and __swp_type() macros
This patch is required to handle file-mapped or swapped-out pages
correctly.
- Fix pte_to_pgoff() and pgoff_to_pte() macros not to include
_PAGE_PROTNONE bit of PTE.
Mask value for { ACCESSED, N, (R, W, X), L, G } is not 0xef but 0x7f.
- Fix __swp_type() macro for MAX_SWAPFILES_SHIFT(=5), which is defined
in include/linux/swap.h.
* M32R TLB format
[0] [1:19] [20:23] [24:31]
+-----------------------+----+-------------+
| VPN |0000| ASID |
+-----------------------+----+-------------+
+-+---------------------+----+-+---+-+-+-+-+
|0 PPN |0000|N|AC |L|G|V| |
+-+---------------------+----+-+---+-+-+-+-+
|| RWX | |
* software bits in PTE || | +-- _PAGE_FILE | _PAGE_DIRTY
|| +---- _PAGE_PRESENT
|+---------------- _PAGE_ACCESSED
+----------------- _PAGE_PROTNONE
Signed-off-by: Hitoshi Yamamoto <hitoshiy@linux-m32r.org>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/ipc_sysctl.c')
0 files changed, 0 insertions, 0 deletions