The patch titled
Subject: ipc/util.c: update return value of ipc_getref from int to bool
has been added to the -mm tree. Its filename is
ipc-utilc-update-return-value-of-ipc_getref-from-int-to-bool.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ipc-utilc-update-return-value-of-ipc_getref-from-int-to-bool.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ipc-utilc-update-return-value-of-ipc_getref-from-int-to-bool.patch
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------------------------------------------------------
From: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
Subject: ipc/util.c: update return value of ipc_getref from int to bool
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/20180712185241.4017-13-manfred@xxxxxxxxxxxxxxxx
Signed-off-by: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Cc: Davidlohr Bueso <dbueso@xxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Michael Kerrisk <mtk.manpages@xxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN ipc/util.c~ipc-utilc-update-return-value-of-ipc_getref-from-int-to-bool ipc/util.c
--- a/ipc/util.c~ipc-utilc-update-return-value-of-ipc_getref-from-int-to-bool
+++ a/ipc/util.c
@@ -461,7 +461,7 @@ void ipc_set_key_private(struct ipc_ids
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);
}
diff -puN ipc/util.h~ipc-utilc-update-return-value-of-ipc_getref-from-int-to-bool ipc/util.h
--- a/ipc/util.h~ipc-utilc-update-return-value-of-ipc_getref-from-int-to-bool
+++ a/ipc/util.h
@@ -138,7 +138,7 @@ static inline int ipc_get_maxidx(struct
* 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));
_
Patches currently in -mm which might be from manfred@xxxxxxxxxxxxxxxx are
ipc-ipc-compute-kern_ipc_permid-under-the-ipc-lock.patch
ipc-reorganize-initialization-of-kern_ipc_permseq.patch
ipc-utilc-use-ipc_rcu_putref-for-failues-in-ipc_addid.patch
ipc-rename-ipcctl_pre_down_nolock.patch
ipc-utilc-correct-comment-in-ipc_obtain_object_check.patch
ipc-utilc-further-variable-name-cleanups.patch
ipc-utilc-update-return-value-of-ipc_getref-from-int-to-bool.patch
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