tree 8ba448a6cc7b5cdc4d173390721eda3f83a3e012
parent c673944347edfd4362b10eea11ac384a582b1cf5
author Casey Schaufler <casey@schaufler-ca.com> 1369273383 -0700
committer Casey Schaufler <casey@schaufler-ca.com> 1369760912 -0700

Smack: Improve access check performance

Each Smack label that the kernel has seen is added to a
list of labels. The list of access rules for a given subject
label hangs off of the label list entry for the label.
This patch changes the structures that contain subject
labels to point at the label list entry rather that the
label itself. Doing so removes a label list lookup in
smk_access() that was accounting for the largest single
chunk of Smack overhead.

Targeted for git://git.gitorious.org/smack-next/kernel.git

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>