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| author | David Howells <dhowells@redhat.com> | 2006-04-10 22:54:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-11 06:18:45 -0700 |
| commit | 1a26feb9622f1b1bc5e4f5f60f65557b73c38cbf (patch) | |
| tree | 2404fc0d346127b71b9c30d9f9c95603c652ac93 /ipc/Makefile | |
| parent | 25a80759c5c237f0ecf57eb11fdd4efb21079c88 (diff) | |
| download | op-kernel-dev-1a26feb9622f1b1bc5e4f5f60f65557b73c38cbf.zip op-kernel-dev-1a26feb9622f1b1bc5e4f5f60f65557b73c38cbf.tar.gz | |
[PATCH] Keys: Improve usage of memory barriers and remove IRQ disablement
Remove an unnecessary memory barrier (implicit in rcu_dereference()) from
install_session_keyring().
install_session_keyring() is also rearranged a little to make it slightly
more efficient.
As install_*_keyring() may schedule (in synchronize_rcu() or
keyring_alloc()), they may not be entered with interrupts disabled - and so
there's no point saving the interrupt disablement state over the critical
section.
exec_keys() will also be invoked with interrupts enabled, and so that doesn't
need to save the interrupt state either.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'ipc/Makefile')
0 files changed, 0 insertions, 0 deletions
