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authorRafael Aquini <aquini@redhat.com>2014-01-27 17:07:02 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-27 21:02:39 -0800
commit72a8ff2f9245128c254387c58f948f1f0152ea46 (patch)
tree176eec6a1d264e9e679d7bd73eb3f5b77975e4a3 /ipc
parent0f3d2b0135f4bdbfe47a99753923a64efd373d11 (diff)
downloadlinux-72a8ff2f9245128c254387c58f948f1f0152ea46.tar.gz
ipc: change kern_ipc_perm.deleted type to bool
struct kern_ipc_perm.deleted is meant to be used as a boolean toggle, and the changes introduced by this patch are just to make the case explicit. Signed-off-by: Rafael Aquini <aquini@redhat.com> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Greg Thelen <gthelen@google.com> Acked-by: Davidlohr Bueso <davidlohr@hp.com> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc')
-rw-r--r--ipc/sem.c2
-rw-r--r--ipc/util.c6
-rw-r--r--ipc/util.h2
3 files changed, 5 insertions, 5 deletions
diff --git a/ipc/sem.c b/ipc/sem.c
index 4d88194a5ff..160fbb3390b 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -394,7 +394,7 @@ static inline struct sem_array *sem_obtain_lock(struct ipc_namespace *ns,
/* ipc_rmid() may have already freed the ID while sem_lock
* was spinning: verify that the structure is still valid
*/
- if (!ipcp->deleted)
+ if (ipc_valid_object(ipcp))
return container_of(ipcp, struct sem_array, sem_perm);
sem_unlock(sma, *locknum);
diff --git a/ipc/util.c b/ipc/util.c
index 3ae17a4ace5..9dc67fa4308 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -286,7 +286,7 @@ int ipc_addid(struct ipc_ids* ids, struct kern_ipc_perm* new, int size)
idr_preload(GFP_KERNEL);
spin_lock_init(&new->lock);
- new->deleted = 0;
+ new->deleted = false;
rcu_read_lock();
spin_lock(&new->lock);
@@ -447,7 +447,7 @@ void ipc_rmid(struct ipc_ids *ids, struct kern_ipc_perm *ipcp)
ids->in_use--;
- ipcp->deleted = 1;
+ ipcp->deleted = true;
return;
}
@@ -657,7 +657,7 @@ struct kern_ipc_perm *ipc_lock(struct ipc_ids *ids, int id)
/* ipc_rmid() may have already freed the ID while ipc_lock
* was spinning: here verify that the structure is still valid
*/
- if (!out->deleted)
+ if (ipc_valid_object(out))
return out;
spin_unlock(&out->lock);
diff --git a/ipc/util.h b/ipc/util.h
index d05b7085a88..a1cbc3aaf25 100644
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -195,7 +195,7 @@ static inline void ipc_unlock(struct kern_ipc_perm *perm)
*/
static inline bool ipc_valid_object(struct kern_ipc_perm *perm)
{
- return perm->deleted == 0;
+ return !perm->deleted;
}
struct kern_ipc_perm *ipc_obtain_object_check(struct ipc_ids *ids, int id);