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CRED: Restore const to current_cred()

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Commit 3295514841 ("fix rcu annotations noise in cred.h") accidentally
dropped the const of current->cred inside current_cred() by the
insertion of a cast to deal with an RCU annotation loss warning from
sparce.

Use an appropriate RCU wrapper instead so as not to lose the const.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Howells 2011-08-08 15:54:53 +01:00 • committed by Linus Torvalds
commit 27e4e43627
1 changed files with 1 additions and 1 deletions
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include/linux/cred.h
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@ -269,7 +269,7 @@ static inline void put_cred(const struct cred *_cred)
* since nobody else can modify it. * since nobody else can modify it.
*/ */
#define current_cred() \ #define current_cred() \
(*(__force struct cred **)&current->cred) rcu_dereference_protected(current->cred, 1)
/** /**
* __task_cred - Access a task's objective credentials * __task_cred - Access a task's objective credentials