[PATCH] making namespace_sem global

This removes the per-namespace semaphore in favor of a global semaphore.
This can have an effect on namespace scalability.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/include/linux/namespace.h b/include/linux/namespace.h
index 6f0f25d64c38..6731977c4c13 100644
--- a/include/linux/namespace.h
+++ b/include/linux/namespace.h
@@ -9,7 +9,6 @@ struct namespace {
         atomic_t                count;
         struct vfsmount *       root;
         struct list_head        list;
-        struct rw_semaphore     sem;
         wait_queue_head_t poll;
         int event;
 };