From: James Morris <jmorris@namei.org>
Date: Wed, 22 Mar 2006 08:09:22 +0000 (-0800)
Subject: [PATCH] SELinux: add slab cache for inode security struct
X-Git-Tag: v2.6.17-rc1~1129^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7cae7e26f245151b9ccad868bf2edf8c8048d307;p=pandora-kernel.git

[PATCH] SELinux: add slab cache for inode security struct

Add a slab cache for the SELinux inode security struct, one of which is
allocated for every inode instantiated by the system.

The memory savings are considerable.

On 64-bit, instead of the size-128 cache, we have a slab object of 96
bytes, saving 32 bytes per object.  After booting, I see about 4000 of
these and then about 17,000 after a kernel compile.  With this patch, we
save around 530KB of kernel memory in the latter case.  On 32-bit, the
savings are about half of this.

Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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