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authorDavid Howells <dhowells@redhat.com>2012-01-17 21:39:40 +0100
committerJames Morris <jmorris@namei.org>2012-01-18 00:41:27 +0100
commitefde8b6e16f11e7d1681c68d86c7fd51053cada7 (patch)
tree4fb5e80428c4f36c5da35ff3319cd71c1771451c /drivers
parentTOMOYO: Accept \000 as a valid character. (diff)
downloadlinux-efde8b6e16f11e7d1681c68d86c7fd51053cada7.tar.xz
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KEYS: Add missing smp_rmb() primitives to the keyring search code
Add missing smp_rmb() primitives to the keyring search code. When keyring payloads are appended to without replacement (thus using up spare slots in the key pointer array), an smp_wmb() is issued between the pointer assignment and the increment of the key count (nkeys). There should be corresponding read barriers between the read of nkeys and dereferences of keys[n] when n is dependent on the value of nkeys. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
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