diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 1995-11-14 08:00:00 +0000 |
|---|---|---|
| committer | <ralf@linux-mips.org> | 1995-11-14 08:00:00 +0000 |
| commit | e7c2a72e2680827d6a733931273a93461c0d8d1b (patch) | |
| tree | c9abeda78ef7504062bb2e816bcf3e3c9d680112 /include/linux/shm.h | |
| parent | ec6044459060a8c9ce7f64405c465d141898548c (diff) | |
Import of Linux/MIPS 1.3.0
Diffstat (limited to 'include/linux/shm.h')
| -rw-r--r-- | include/linux/shm.h | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/include/linux/shm.h b/include/linux/shm.h index c8e391906..2faa4e63d 100644 --- a/include/linux/shm.h +++ b/include/linux/shm.h @@ -50,7 +50,6 @@ struct shminfo { bits 14..8 (SHM_ID) the id of the shared memory segment bits 29..15 (SHM_IDX) the index of the page within the shared memory segment (actually only bits 24..15 get used since SHMMAX is so low) - bit 31 (SHM_READ_ONLY) flag whether the page belongs to a read-only attach */ #define SHM_ID_SHIFT 8 @@ -63,9 +62,7 @@ struct shminfo { #define _SHM_IDX_BITS 15 #define SHM_IDX_MASK ((1<<_SHM_IDX_BITS)-1) -#define SHM_READ_ONLY (1<<31) - -/* We must have SHM_ID_SHIFT + _SHM_ID_BITS + _SHM_IDX_BITS + 1 <= 32 +/* We must have SHM_ID_SHIFT + _SHM_ID_BITS + _SHM_IDX_BITS <= 32 and SHMMAX <= (PAGE_SIZE << _SHM_IDX_BITS). */ #define SHMMAX 0x3fa000 /* max shared seg size (bytes) */ |