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keys: make key_serial() a function if CONFIG_KEYS=y

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Make key_serial() an inline function rather than a macro if CONFIG_KEYS=y.
This prevents double evaluation of the key pointer and also provides better
type checking.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Howells 2008-04-29 01:01:34 -07:00 committed by Linus Torvalds
parent fdb89bce6c
commit 7249db2c28
1 changed files with 4 additions and 1 deletions
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5
include/linux/key.h
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@ -264,7 +264,10 @@ extern int keyring_add_key(struct key *keyring,
extern struct key *key_lookup(key_serial_t id);
#define key_serial(key) ((key) ? (key)->serial : 0)
static inline key_serial_t key_serial(struct key *key)
{
return key ? key->serial : 0;
}
#ifdef CONFIG_SYSCTL
extern ctl_table key_sysctls[];