path: root/ipc/util.h
diff options
authorNadia Derbey <Nadia.Derbey@bull.net>2007-10-18 23:40:52 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-19 11:53:46 -0700
commitce621f5ba52f30dd59aef4fb50276faee04ef9cf (patch)
treee0260364cf8748849d37165760db6d4e4e51ed9c /ipc/util.h
parent03f02c7657f7948ab980280c54c9366f962b1474 (diff)
ipc: introduce the ipcid_to_idx macro
This is a trivial patch that changes all the (id % SEQ_MULTIPLIER) into a call to the ipcid_to_idx(id) macro. Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/util.h')
1 files changed, 2 insertions, 0 deletions
diff --git a/ipc/util.h b/ipc/util.h
index 2a03d8cc6a01..fa7e7a07486e 100644
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -79,6 +79,8 @@ void __init ipc_init_proc_interface(const char *path, const char *header,
#define IPC_MSG_IDS 1
#define IPC_SHM_IDS 2
+#define ipcid_to_idx(id) ((id) % SEQ_MULTIPLIER)
/* must be called with ids->mutex acquired.*/
int ipc_addid(struct ipc_ids *, struct kern_ipc_perm *, int);
int ipc_get_maxid(struct ipc_ids *);

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