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ipc/util.c: update return value of ipc_getref from int to bool

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ipc_getref has still a return value of type "int", matching the atomic_t
interface of atomic_inc_not_zero()/atomic_add_unless().

ipc_getref now uses refcount_inc_not_zero, which has a return value of
type "bool".

Therefore, update the return code to avoid implicit conversions.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Manfred Spraul <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Herbert Xu <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Michael Kerrisk <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Manfred Spraul 2018-08-21 22:02:04 -07:00 • committed by Linus Torvalds
commit 2a9d648100
2 changed files with 2 additions and 2 deletions
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2
ipc/util.c
View file

@ -462,7 +462,7 @@ void ipc_set_key_private(struct ipc_ids *ids, struct kern_ipc_perm *ipcp)
ipcp->key = IPC_PRIVATE;
}
int ipc_rcu_getref(struct kern_ipc_perm *ptr)
bool ipc_rcu_getref(struct kern_ipc_perm *ptr)
{
return refcount_inc_not_zero(&ptr->refcount);
}

2
ipc/util.h
View file

@ -138,7 +138,7 @@ static inline int ipc_get_maxidx(struct ipc_ids *ids)
* refcount is initialized by ipc_addid(), before that point call_rcu()
* must be used.
*/
int ipc_rcu_getref(struct kern_ipc_perm *ptr);
bool ipc_rcu_getref(struct kern_ipc_perm *ptr);
void ipc_rcu_putref(struct kern_ipc_perm *ptr,
void (*func)(struct rcu_head *head));