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| author | Badari Pulavarty <pbadari@us.ibm.com> | 2005-11-07 00:59:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-07 07:53:37 -0800 |
| commit | bf8f972d3a1daf969cf44f64cc36d53bfd76441f (patch) | |
| tree | c3f0ac2f789c695d13858171144aa5f4ecdc84c1 /include/linux/shm.h | |
| parent | d8ba3b731086bcae5468f9ea509f39a921b3f9a6 (diff) | |
| download | lwn-bf8f972d3a1daf969cf44f64cc36d53bfd76441f.tar.gz lwn-bf8f972d3a1daf969cf44f64cc36d53bfd76441f.zip | |
[PATCH] SHM_NORESERVE flags for shmget()
Add SHM_NORESERVE functionality similar to MAP_NORESERVE for shared memory
segments.
This is mainly to avoid abuse of OVERCOMMIT_ALWAYS and this flag is ignored
for OVERCOMMIT_NEVER.
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/shm.h')
| -rw-r--r-- | include/linux/shm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/shm.h b/include/linux/shm.h index 80113a1f60bc..a2c896ad0bef 100644 --- a/include/linux/shm.h +++ b/include/linux/shm.h @@ -92,6 +92,7 @@ struct shmid_kernel /* private to the kernel */ #define SHM_DEST 01000 /* segment will be destroyed on last detach */ #define SHM_LOCKED 02000 /* segment will not be swapped */ #define SHM_HUGETLB 04000 /* segment will use huge TLB pages */ +#define SHM_NORESERVE 010000 /* don't check for reservations */ #ifdef CONFIG_SYSVIPC long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr); |