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| author | Serge E. Hallyn <serge.hallyn@canonical.com> | 2011-05-13 04:27:54 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-13 11:45:33 -0700 |
| commit | 47a150edc2ae734c0f4bf50aa19499e23b9a46f8 (patch) | |
| tree | beeba9befd531285f663559a76f6f0f7378a6c2b /kernel/auditsc.c | |
| parent | 381e7863d94891035a1a6b7836e9db72f9f1cba1 (diff) | |
| download | linux-47a150edc2ae734c0f4bf50aa19499e23b9a46f8.tar.gz | |
Cache user_ns in struct cred
If !CONFIG_USERNS, have current_user_ns() defined to (&init_user_ns). Get rid of _current_user_ns. This requires nsown_capable() to be defined in capability.c rather than as static inline in capability.h, so do that. Request_key needs init_user_ns defined at current_user_ns if !CONFIG_USERNS, so forward-declare that in cred.h if !CONFIG_USERNS at current_user_ns() define. Compile-tested with and without CONFIG_USERNS. Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com> [ This makes a huge performance difference for acl_permission_check(), up to 30%. And that is one of the hottest kernel functions for loads that are pathname-lookup heavy. ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/auditsc.c')
0 files changed, 0 insertions, 0 deletions