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authorBadari Pulavarty <pbadari@us.ibm.com>2005-11-07 00:59:27 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 07:53:37 -0800
commitbf8f972d3a1daf969cf44f64cc36d53bfd76441f (patch)
treec3f0ac2f789c695d13858171144aa5f4ecdc84c1 /include
parentd8ba3b731086bcae5468f9ea509f39a921b3f9a6 (diff)
[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')
-rw-r--r--include/linux/shm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/shm.h b/include/linux/shm.h
index 80113a1f60b..a2c896ad0be 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);