tree ea4bf309efed7ec922431c6e5b5d659919eaf2ae
parent e020e742e5dbd8c44d31706995dc13ddc732e274
author Pavel Emelyanov <xemul@parallels.com> 1294880446 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1294934598 -0800

user_ns: improve the user_ns on-the-slab packaging

Currently on 64-bit arch the user_namespace is 2096 and when being
kmalloc-ed it resides on a 4k slab wasting 2003 bytes.

If we allocate a separate cache for it and reduce the hash size from 128
to 64 chains the packaging becomes *much* better - the struct is 1072
bytes and the hole between is 98 bytes.

[akpm@linux-foundation.org: s/__initcall/module_init/]
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Serge E. Hallyn <serge@hallyn.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>