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authorMonam Agarwal <monamagarwal123@gmail.com>2014-04-07 22:38:54 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-07 23:36:07 (GMT)
commit3f59b067c5140766591a64a3117d86978c57509b (patch)
treedb029b39b6c20c33b07eb486983b9ed19ab3cbc9 /lib/idr.c
parent90ae3ae539246984d36e43b0e23554bca941476f (diff)
lib/idr.c: use RCU_INIT_POINTER(x, NULL)
Replace rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/idr.c')
-rw-r--r--lib/idr.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/idr.c b/lib/idr.c
index ba2df39..2642fa8 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -533,7 +533,7 @@ static void sub_remove(struct idr *idp, int shift, int id)
n = id & IDR_MASK;
if (likely(p != NULL && test_bit(n, p->bitmap))) {
__clear_bit(n, p->bitmap);
- rcu_assign_pointer(p->ary[n], NULL);
+ RCU_INIT_POINTER(p->ary[n], NULL);
to_free = NULL;
while(*paa && ! --((**paa)->count)){
if (to_free)
@@ -602,7 +602,7 @@ static void __idr_remove_all(struct idr *idp)
n = idp->layers * IDR_BITS;
p = idp->top;
- rcu_assign_pointer(idp->top, NULL);
+ RCU_INIT_POINTER(idp->top, NULL);
max = idr_max(idp->layers);
id = 0;

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